25
DBMS_DATAPUMP

The DBMS_DATAPUMP package is used to move all, or part of, a database between databases, including both data and metadata.

This chapter contains the following topics:

• Using DBMS_DATAPUMP
  • Overview
  • Security Model
  • Constants
  • Types
• Summary of DBMS_DATAPUMP Subprograms

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Using DBMS_DATAPUMP

• Overview
• Security Model
• Constants
• Types

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Overview

The support and functionality provided by DBMS_DATAPUMP is as follows:

• The source and target databases can have different hardware, operating systems, character sets, and time zones.
• All object types and datatypes existing in Oracle Database 10g are supported.
• Data and metadata can be transferred between databases without using any intermediary files.
• A subset of a database can be moved based upon object type and names of objects.
• Schema names, datafile names, and tablespace names can be transformed at import time.
• Previously aborted export and import jobs can be restarted without duplicating or omitting any data or metadata from the original job.
• The resources applied to an export or import job can be modified.
• Data in an Oracle proprietary format can be unloaded and loaded.

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Security Model

Security for the DBMS_DATAPUMP package is implemented through roles.

Roles

The existing EXP_FULL_DATABASE and IMP_FULL_DATABASE roles will be used to allow privileged users to take full advantage of the API. The Data Pump API will use these roles to determine whether privileged application roles should be assigned to the processes comprising the job.

EXP_FULL_DATABASE

The EXP_FULL_DATABASE role affects only Export operations. It allows users running these operations to do the following:

• Perform the operation outside of the scope of their schema
• Monitor jobs that were initiated by another user
• Export objects (for example, TABLESPACE definitions) that unprivileged users cannot reference

Although the SYS schema does not have the EXP_FULL_DATABASE role assigned to it, all security checks performed by Data Pump that require the EXP_FULL_DATABASE role will also grant access to the SYS schema.

IMP_FULL_DATABASE

The IMP_FULL_DATABASE role affects only Import and SQL_FILE operations. It allows users running these operations to do the following:

• Perform the operation outside of the scope of their schema
• Monitor jobs that were initiated by another user
• Import objects (for example, DIRECTORY definitions) that unprivileged users cannot create

Although the SYS schema does not have the IMP_FULL_DATABASE role assigned to it, all security checks performed by Data Pump that require the IMP_FULL_DATABASE role will also grant access to the SYS schema.

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Constants

There are several public constants defined for use with the DBMS_DATAPUMP.GET_STATUS procedure. All such constants are defined as part of the DBMS_DATAPUMP package. Any references to these constants must be prefixed by DBMS_DATAPUMP. and followed by the symbols in the following lists:

Mask Bit Definitions

The following mask bit definitions are used for controlling the return of data through the DBMS_DATAPUMP.GET_STATUS procedure.

• KU$_STATUS_WIP CONSTANT BINARY_INTEGER := 1;
• KU$_STATUS_JOB_DESC CONSTANT BINARY_INTEGER := 2;
• KU$_STATUS_JOB_STATUS CONSTANT BINARY_INTEGER := 4;
• KU$_STATUS_JOB_ERROR CONSTANT BINARY_INTEGER := 8;

Dump File Type Definitions

The following definitions are used for identifying types of dump files returned through the DBMS_DATAPUMP.GET_STATUS procedure.

• KU$_DUMPFILE_TYPE_DISK CONSTANT BINARY_INTEGER := 0;
• KU$_DUMPFILE_TYPE_TEMPLATE CONSTANT BINARY_INTEGER := 3;

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Types

The types described in this section are defined in the SYS schema for use by the GET_STATUS function. The way in which these types are defined and used may be different than what you are accustomed to. Be sure to read this section carefully.

The collection of types defined for use with the GET_STATUS procedure are version-specific and include version information in the names of the types. Once introduced, these types will always be provided and supported in future versions of Oracle Database and will not change. However, in future releases of Oracle Database, new versions of these types might be created that provide new or different information. The new versions of these types will have different version information embedded in the type names.

For example, in Oracle Database 10g, release 1 (10.1), there is a sys.ku$_Status1010 type, and in the next Oracle Database release, there could be a sys.ku$_Status1110 type defined. Both types could be used with the GET_STATUS procedure.

Public synonyms have been defined for each of the types used with the GET_STATUS procedure. This makes it easier to use the types and means that you do not have to be concerned with changes to the actual type names or schemas where they reside. Oracle recommends that you use these synonyms whenever possible.

For each of the types, there is a version-specific synonym and a generic synonym. For example, the version-specific synonym ku$_Status1010 is defined for the sys.ku$_Status1010 type.

The generic synonym always describes the latest version of that type. For example, in Oracle Database 10g, release 1, the generic synonym ku$_Status is defined as ku$_Status1010. In a future release, there might be a ku$_Status1110 synonym for sys.ku$Status1110. Because the ku$_Status generic synonym always points to the latest definition, it would now point to ku$_Status1110 rather than to ku$_Status1010.

The choice of whether to use version-specific synonyms or generic synonyms makes a significant difference in how you work. Using version-specific names protects your code from changes in future releases of Oracle Database because those types will continue to exist and be supported. However, access to new information will require code changes to use new synonym names for each of the types. Using the generic names implies that you always want the latest definition of the types and are prepared to deal with changes in different releases of Oracle Database.

When the version of Oracle Database that you are using changes, any C code that accesses types through generic synonym names will need to be recompiled.

Worker Status Types

The worker status types describe what each worker process in a job is doing. The schema, object name, and object type of an object being processed will be provided. For workers processing user data, the partition name for a partitioned table (if any), the number of bytes processed in the partition, and the number of rows processed in the partition are also returned. Workers processing metadata provide status on the last object that was processed. No status for idle threads is returned.

The percent_done refers to the amount completed for the current data item being processed. It is not updated for metadata objects.

The worker status types are defined as follows:

CREATE TYPE sys.ku$_WorkerStatus1010 AS OBJECT (
worker_number      NUMBER,
process_name       VARCHAR2(30),
state              VARCHAR2(30),
schema             VARCHAR2(30),
name               VARCHAR2(4000),
object_type        VARCHAR2(200),
partition          VARCHAR2(30),
completed_objects  NUMBER,
total_objects      NUMBER,
completed_rows     NUMBER,
completed_bytes    NUMBER,
percent_done       NUMBER )
/
CREATE PUBLIC SYNONYM ku$_WorkerStatus1010 FOR sys.ku$_WorkerStatus1010;
CREATE TYPE sys.ku$_WorkerStatusList1010 AS TABLE OF sys.ku$_WorkerStatus1010
/
CREATE PUBLIC SYNONYM ku$_WorkerStatusList1010 FOR sys.ku$_WorkerStatusList1010;

Log Entry and Error Types

These types provide informational and error text to attached clients and the log stream. The ku$LogLine.errorNumber type is set to NULL for informational messages but is specified for error messages. Each log entry may contain several lines of text messages.

The log entry and error types are defined as follows:

CREATE TYPE sys.ku$_LogLine1010 AS OBJECT (
logLineNumber   NUMBER,
errorNumber     NUMBER,
LogText         VARCHAR2(2000) )
/
CREATE PUBLIC SYNONYM ku$_LogLine1010 FOR sys.ku$_LogLine1010;
CREATE TYPE sys.ku$_LogEntry1010 AS TABLE OF sys.ku$_LogLine1010
/
CREATE PUBLIC SYNONYM ku$_LogEntry1010 FOR sys.ku$_LogEntry1010;

Job Status Types

The job status type returns status about a job. Usually, the status concerns a running job but it could also be about a stopped job when a client attaches. It is typically requested at attach time, when the client explicitly requests status from interactive mode and every N seconds when the client has requested status periodically.

The job status types are defined as follows (percent_done applies to data only):

CREATE TYPE sys.ku$_DumpFile1010 AS OBJECT (
file_name          VARCHAR2(4000),                
file_type          NUMBER,
file_size          NUMBER,
file_bytes_written NUMBER)

CREATE TYPE sys.ku$_DumpFileSet1010 AS TABLE OF sys.ku$_DumpFile1010;

CREATE TYPE sys.ku$_JobStatus1010 AS OBJECT (
job_name           VARCHAR2(30),
operation          VARCHAR2(30),
job_mode           VARCHAR2(30),
bytes_processed    NUMBER,
total_bytes        NUMBER,
percent_done       NUMBER,
degree             NUMBER,
error_count        NUMBER,
state              VARCHAR2(30),
phase              NUMBER,
restart_count      NUMBER,
worker_status_list ku$_WorkerStatusList1010,
files              ku$_DumpFileSet1010)

CREATE PUBLIC SYNONYM ku$_JobStatus1010 
FOR sys.ku$_JobStatus1010;

Job Description Types

The job description type holds all the environmental information about the job such as parameter settings and dump file set members. There are a couple of subordinate types required as well.

The job description types are defined as follows:

CREATE TYPE sys.ku$_ParamValue1010 AS OBJECT (
param_name     VARCHAR2(30),
param_op       VARCHAR2(30),
param_type     VARCHAR2(30),
param_length   NUMBER,
param_value_n  NUMBER,
param_value_t  VARCHAR2(2000) );

CREATE TYPE sys.ku$_ParamValues1010 AS TABLE OF sys.ku$_ParamValue1010;

CREATE TYPE sys.ku$_JobDesc1010 AS OBJECT (
job_name       VARCHAR2(30),
guid           RAW(16),
operation      VARCHAR2(30),
job_mode       VARCHAR2(30),
remote_link    VARCHAR2(4000),
owner          VARCHAR2(30),
instance       VARCHAR2(16),
db_version     VARCHAR2(30),
creator_privs  VARCHAR2(30),
start_time     DATE,
max_degree     NUMBER,
log_file       VARCHAR2(4000),
sql_file       VARCHAR2(4000),
params         ku$_ParamValues1010)

Status Types

The status type is an aggregate of some the previous types defined and is the return value for the GET_STATUS call. The mask attribute indicates which types of information are being returned to the caller. It is created by a client's shadow process from information it retrieves off the status queue or directly from the master table.

For errors, the ku$_LogEntry that is returned has already had its log lines ordered for proper output. That is, the original ku$_LogEntry objects have been ordered from outermost context to innermost.

The status types are defined as follows:

CREATE TYPE sys.ku$_Status1010 AS OBJECT
(
mask               NUMBER,         /* Indicates which status types are present*/
wip                ku$_LogEntry1010,  /* Work-In-Progress: std. exp/imp msgs */
job_description    ku$_JobDesc1010,   /* Complete job description */
job_status         ku$_JobStatus1010, /* Detailed job status + per-worker sts */
error              ku$_LogEntry1010   /* Multi-level contextual errors */
)

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Summary of DBMS_DATAPUMP Subprograms

Table 25-1  DBMS_DATAPUMP Package Subprograms

Subprogram	Description
ADD_FILE Procedure	Adds dump files to the dump file set for an Export, Import, or SQL_FILE operation. In addition to dump files, other types of files can also be added by using the FILETYPE parameter provided with this procedure
ATTACH Function	Used to gain access to a Data Pump job that is in the Defining, Executing, Idling, or Stopped state
DATA_FILTER Procedures	Specifies restrictions on the rows that are to be retrieved
DETACH Procedure	Specifies that the user has no further interest in using the handle
GET_STATUS Procedure	Monitors the status of a job or waits for the completion of a job or for more details on API errors
LOG_ENTRY Procedure	Inserts a message into the log file
METADATA_FILTER Procedure	Provides filters that allow you to restrict the items that are included in a job
METADATA_TRANSFORM Procedure	Specifies transformations to be applied to objects as they are processed in the specified job
METADATA_REMAP Procedure	Specifies a remapping to be applied to objects as they are processed in the specified job
OPEN Function	Declares a new job using the Data Pump API, the handle returned being used as a parameter for calls to all other procedures except ATTACH
SET_PARALLEL Procedure	Adjusts the degree of parallelism within a job
SET_PARAMETER Procedures	Specifies job-processing options
START_JOB Procedure	Begins or resumes execution of a job
STOP_JOB Procedure	Terminates a job, but optionally, preserves the state of the job

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ADD_FILE Procedure

This procedure adds files to the dump file set for an Export, Import, or SQL_FILE operation or specifies the log file or the output file for a SQL_FILE operation.

Syntax

DBMS_DATAPUMP.ADD_FILE (
   handle    IN NUMBER,
   filename   IN VARCHAR2,
   directory  IN VARCHAR2,
   filesize   IN VARCHAR2 DEFAULT NULL,
   filetype   IN NUMBER DEFAULT DBMS_DATAPUMP.KU$_FILE_TYPE_DUMP_FILE);

Parameters

Table 25-2  ADD_FILE Procedure Parameters

Parameter	Description
handle	The handle of a job. The current session must have previously attached to the handle through an OPEN or ATTACH call.
filename	The name of the file being added. filename must be a simple filename without any directory path information. For dump files, the filename can include a substitution variable, %U, which indicates that multiple files may be generated with the specified filename as a template. The %U is expanded in the resulting file names into a two-character, fixed-width, incrementing integer starting at 01. For example, the dump filename of export%U would cause export01, export02, export03, ... to be created depending on how many files are needed to perform the export. For filenames containing the % character, the % must be represented as %% to avoid ambiguity. Any % in a filename must be followed by either a % or a U.
directory	The name of a directory object within the database that is used to locate filename. A directory must be specified. See the Data Pump Export chapter in Oracle Database Utilities for information about the DIRECTORY command-line parameter.
filesize	The size of the dump file that is being added. It may be specified as the number of bytes, number of kilobytes (if followed by K), number of megabytes (if followed by M) or number of gigabytes (if followed by G). An Export operation will write no more than the specified number of bytes to the file. Once the file is full, it will be closed. If there is insufficient space on the device to write the specified number of bytes, the Export operation will fail, but it can be restarted. If not specified, filesize will default to an unlimited size. For Import and SQL_FILE operations, filesize is ignored. The minimum value for filesize is ten times the default Data Pump block size, which is 4 kilobytes. filesize may only be specified for dump files.
filetype	The type of the file to be added. The legal values are as follows and must be preceded by DBMS_DATAPUMP.: KU$_FILE_TYPE_DUMP_FILE (dump file for a job) KU$_FILE_TYPE_LOG_FILE (log file for a job) KU$_FILE_TYPE_SQL_FILE (output for SQL_FILE job)

Exceptions

• INVALID_HANDLE. The specified handle is not attached to a Data Pump job.
• INVALID_ARGVAL. An invalid value was supplied for an input parameter.
• INVALID_STATE. The job is completing, or the job is past the defining state for an import or SQL_FILE job or is past the defining state for LOG and SQL files.
• FILE_ERROR. Oracle does not have the requested operating system access to the specified file or the file has already been specified for the current operation.
• INVALID_OPERATION. A dump file was specified for a Network Import or ESTIMATE_ONLY export operation.
• SUCCESS_WITH_INFO. The procedure succeeded, but further information is available through the GET_STATUS procedure.
• NO_SUCH_JOB. The specified job does not exist.

Usage Notes

• Adds files to a Data Pump job. Three types of files may be added to jobs: Dump files to contain the data that is being moved, log files to record the messages associated with an operation, and SQL files to record the output of a SQL_FILE operation. Log and SQL files will overwrite previously existing files. Dump files will never overwrite previously existing files. Instead, an error will be generated.
• Import and SQL_FILE operations require that all dump files be specified during the definition phase of the job. For Export operations, dump files can be added at any time. For example, if the user ascertains that the file space is running low during an Export, additional dump files may be added through this API. If the specified dump file already exists for an Export operation, an error will be returned.
• For Export operations, the parallelism setting should be less than or equal to the number of dump files in the dump file set. If there are not enough dump files, the job will not be able to maximize parallelism to the degree specified by the SET_PARALLEL procedure.
• For Import operations, the parallelism setting should also be less than or equal to the number of dump files in the dump file set. If there are not enough dump files, the performance will not be optimal as multiple threads of execution try to access the same dump file.
• If the substitution variable (%U) is included in a filename, multiple dump files may be specified through a single call to ADD_FILE. For Export operations, the new dump files will be created as they are needed. Enough dump files will be created to allow all of the processes specified by the current SET_PARALLEL value to be active. If one of the dump files fills, it will be closed and a new dump file (with a new generated name) will be created to take its place. If multiple ADD_FILEs with substitution variables have been specified for dump files in a job, they will be used to generate dump files in a round robin fashion. For example, if expa%U, expb%U and expc%U were all specified for a job having a parallelism of 6, the initial dump files created would look like: expa01, expb01, expc01, expa02, expb02, and expc02.
• If presented with dump file specifications, expa%U, expb%U and expc%U, an Import or SQL_FILE operation will begin by attempting to open the dump files, expa01, expb01, and expc01.If the dump file containing the master table is not found in this set, the operation will expand its search for dump files by incrementing the substitution variable and looking up the new filenames (for example, expa02, expb02, and expc02). The DataPump API will keep expanding the search until it locates the dump file containing the master table. If the DataPump API determines that the dump file does not exist or is not part of the current dump set at any iteration, the DataPump API will stop incrementing the substitution variable for the dump file specification that was in error. Once the master table is found, the master table will be used to ascertain when all of dump files in the dump file set have been located.

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ATTACH Function

This function gains access to a previously-created job.

Syntax

DBMS_DATAPUMP.ATTACH(
   job_name    IN VARCHAR2 DEFAULT NULL,
   job_owner    IN VARCHAR2 DEFAULT NULL) 
 RETURN NUMBER;

Parameters

Table 25-3  ATTACH Function Parameters

Parameter	Description
job_name	The name of the job. The default is the job name owned by the user who is specified in the job_owner parameter (assuming that user has only one job in the Defining, Executing, or Idling states).
job_owner	The user who originally started the job. If NULL, the value defaults to the owner of the current session. To specify a job owner other than yourself, you must have either the EXP_FULL_DATABASE role (for export operations) or the IMP_FULL_DATABASE role (for import and SQL_FILE operations). Being a privileged user allows you to monitor another user's job, but you cannot restart another user's job.

Return Values

An opaque handle for the job. This handle is used as input to the following procedures: ADD_FILE, DATA_FILTER, DETACH, STOP_JOB, GET_STATUS, LOG_ENTRY, METADATA_FILTER, METADATA_REMAP, METADATA_TRANSFORM, SET_PARALLEL, and START_JOB.

Exceptions

• INVALID_ARGVAL. An invalid value was supplied for an input parameter.
• SUCCESS_WITH_INFO. The procedure succeeded, but further information is available through the GET_STATUS procedure.
• NO_SUCH_JOB. The specified job does not exist.
• INVALID_OPERATION. The specified operation is not valid in this context.

Usage Notes

• If the job was in the Stopped state, the job is placed into the Idling state. Once the ATTACH succeeds, you can monitor the progress of the job or control the job. The stream of KU$_STATUS_WIP and KU$_STATUS_JOB_ERROR messages returned through the GET_STATUS procedure will be returned to the newly attached job starting at the approximate time of the client's attachment. There will be no repeating of status and error messages that were processed before the client attached to a job.
• If you want to perform a second attach to a job, you must do so from a different session.
• If the ATTACH fails, use a null handle in a subsequent call to GET_STATUS for more information about the failure.

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DATA_FILTER Procedures

This procedure specifies restrictions on the rows that are to be retrieved.

Syntax

DBMS_DATAPUMP.DATA_FILTER (
   handle     IN NUMBER,
   name        IN VARCHAR2,
   value       IN NUMBER,
   table_name  IN VARCHAR2 DEFAULT NULL,
   schema_name IN VARCHAR2 DEFAULT NULL);

DBMS_DATAPUMP.DATA_FILTER(
  handle      IN NUMBER,
  name        IN VARCHAR2,
  value       IN VARCHAR2,
  table_name  IN VARCHAR2 DEFAULT NULL,
  schema_name IN VARCHAR2 DEFAULT NULL);

Parameters

Table 25-4  DATA_FILTER Procedure Parameters

Parameter	Description
handle	The handle that is returned from the OPEN procedure.
name	The name of the filter.
value	The value of the filter.
table_name	The name of the table on which the data filter is applied. If no table name is supplied, the filter applies to all tables in the job.
schema_name	The name of the schema that owns the table on which the filter is applied. If no schema name is specified, the filter applies to all schemas in the job. If you supply a schema name you must also supply a table name.

Exceptions

• INVALID_HANDLE. The specified handle is not attached to a Data Pump job.
• INVALID_ARGVAL. There can be several reasons for this message:
  • A bad filter name is specified
  • The mode is TRANSPORTABLE, which does not support data filters
  • The specified table does not exist
  • The filter has already been set for the specified values of schema_name and table_name
• INVALID_STATE. The user called DATA_FILTER when the job was not in the Defining state.
• INCONSISTENT_ARGS. The value parameter is missing or its datatype does not match the filter name. Or a schema name was supplied, but not a table name.
• PRIVILEGE_ERROR. A schema name was supplied, but the user did not have the EXP_FULL_DATABASE or IMP_FULL_DATABASE role.
• SUCCESS_WITH_INFO. The procedure succeeded, but further information is available through the GET_STATUS procedure.
• NO_SUCH_JOB. The specified job does not exist.

Usage Notes

• Each data filter can only appear once in each table (for example, you cannot supply multiple SUBQUERY filters to a table) or once in each job. If different filters using the same name are applied to both a particular table and to the whole job, the filter parameter supplied for the specific table will take precedence.

  With the exception of the INCLUDE_ROWS filter, data filters are not supported on tables having nested tables or domain indexes defined upon them. Data filters are not supported in jobs performed in Transportable Tablespace mode.

  The available data filters are described in Table 25-5.

  Table 25-5  Data Filters

  Name	Datatype	Operations that Support Filter	Description
  INCLUDE_ROWS	number	EXPORT, IMPORT	If nonzero, this filter specifies that user data for the specified table should be included in the job. The default is 1.
  PARTITION_EXPR	text	EXPORT, IMPORT	For Export jobs, this filter specifies which partitions are unloaded from the database. For Import jobs, it specifies which table partitions are loaded into the database. Partition names are included in the job if their names satisfy the specified expression. Double quotation marks around partition names are required only if the partition names contain special characters. PARTITION_EXPR is not supported on jobs across a network link. Default=All partitions are processed.
  SUBQUERY	text	EXPORT, IMPORT	Specifies a subquery that is added to the end of the SELECT statement for the table. If you specify a WHERE clause in the subquery, you can restrict the rows that are selected. Specifying an ORDER BY clause orders the rows dumped in the export which improves performance when migrating from heap-organized tables to index-organized tables.

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DETACH Procedure

This procedure specifies that the user has no further interest in using the handle.

Syntax

DBMS_DATAPUMP.DETACH(
   handle  IN NUMBER);

Parameters

Table 25-6  DETACH Procedure Parameters

Parameter	Description
handle	The handle of the job. The current session must have previously attached to the handle through an OPEN or ATTACH call.

Exceptions

• INVALID_HANDLE. The specified handle is not attached to a Data Pump job.
• SUCCESS_WITH_INFO. The procedure succeeded, but further information is available through the GET_STATUS procedure.
• NO_SUCH_JOB. The specified job does not exist.

Usage Notes

• Through this call, you specify that you have no further interest in using the handle. Resources associated with a completed job cannot be reclaimed until all users are detached from the job. An implicit detach from a handle is performed when the user's session is exited or aborted. An implicit detach from a handle is also performed upon the expiration of the timeout associated with a STOP_JOB that was applied to the job referenced by the handle. All previously allocated DBMS_DATAPUMP handles are released when an instance is restarted.

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GET_STATUS Procedure

This procedure monitors the status of a job or wait for the completion of a job.

Syntax

DBMS_DATAPUMP.GET_STATUS(
   handle    IN NUMBER,
   mask      IN BINARY_INTEGER,
   timeout   IN NUMBER DEFAULT NULL,
   job_state OUT VARCHAR2,
   status    OUT ku$_Status1010);

Parameters

Table 25-7  GET_STATUS Procedure Parameters

Parameter	Description
handle	The handle of a job. The current session must have previously attached to the handle through an OPEN or ATTACH call. A null handle can be used to retrieve error information after OPEN and ATTACH failures.
mask	A bit mask that indicates which of four types of information to return: KU$_STATUS_WIP KU$_STATUS_JOB_DESC KU$_STATUS_JOB_STATUS KU$_STATUS_JOB_ERROR Each status has a numerical value. You can request multiple types of information by adding together different combinations of values. See Types.
timeout	Maximum number of seconds to wait before returning to the user. A value of 0 requests an immediate return. A value of -1 requests an infinite wait. If KU$_STATUS_WIP or KU$_STATUS_JOB_ERROR information is requested and becomes available during the timeout period, then the procedure returns before the timeout period is over.
job_state	Current state of the job. If only job state is needed, it is much more efficient to use this parameter than to retrieve the full ku$_Status1010 structure.
status	A ku$_Status is returned. The ku$_Status mask indicates what kind of information is included. This could be none if only KU$_STATUS_WIP or KU$_STATUS_JOB_ERROR information is requested and the timeout period expires.

Exceptions

• INVALID_HANDLE. The specified handle is not attached to a Data Pump job.
• INVALID_VALUE. The mask or timeout contains an illegal value.
• SUCCESS_WITH_INFO. The procedure succeeded, but further information is available through the GET_STATUS procedure.
• NO_SUCH_JOB. The specified job does not exist.

Usage Notes

The GET_STATUS procedure is used to monitor the progress of an ongoing job and to receive error notification. You can request various type of information using the mask parameter. The KU$_STATUS_JOB_DESC and KU$_STATUS_JOB_STATUS values are classified as synchronous information because the information resides in the master table. The KU$_STATUS_WIP and KU$_STATUS_JOB_ERROR values are classified as asynchronous because the messages that embody these types of information can be generated at any time by various layers in the Data Pump architecture.

• If synchronous information only is requested, the timeout is ignored.
• If asynchronous information is requested, the interface will wait a maximum of timeout seconds before returning to the client. If a message of the requested asynchronous information type is received, the call will complete prior to timeout seconds. If synchronous information was also requested, it will be returned whenever the procedure returns.
• The job state is always returned, as long as it can be determined.

Error Handling

There are two types of error scenarios that need to be handled using the GET_STATUS procedure:

• Errors resulting from other procedure calls: For example, the SET_PARAMETER procedure may produce an INCONSISTENT_ARGS exception. The client should immediately call GET_STATUS with mask=8 (errors) and timeout=0. The returned ku$_Status.error will contain a ku$_LogEntry that describes the inconsistency in more detail.
• Errors resulting from events asynchronous to the client(s): An example might be Table already exists when trying to create a table. The ku$_Status.error will contain a ku$_LogEntry with all error lines (from all processing layers that added context about the error) properly ordered.

After a job has begun, a client's main processing loop will typically consist of a call to GET_STATUS with an infinite timeout (-1) "listening" for KU$_STATUS_WIP and KU$_STATUS_JOB_ERROR messages. If status was requested, then JOB_STATUS information will also be in the request.

When the ku$_Status is interpreted, the following guidelines should be used:

• ku$_Status.ku$_JobStatus.percent_done refers only to the amount of data that has been processed in a job. Metadata is not considered in the calculation. It is determined using the following formulas:
  • EXPORT or network IMPORT--(bytes_processed/estimated_bytes) * 100
  • IMPORT--(bytes_processed/total_expected_bytes) * 100
  • SQL_FILE or estimate-only EXPORT--0.00 if not done or 100.00 if done

  The effects of the QUERY and PARTITION_EXPR data filters are not considered in computing percent_done.

  It is expected that the status returned will be transformed by the caller into more user-friendly status. For example, when percent done is not zero, an estimate of completion time could be produced using the following formula:

  ((SYSDATE - start time) / ku$_Status.ku$_JobStatus.percent_done) * 100
  
  

• The caller should not use ku$_Status.ku$_JobStatus.percent_done for determining whether the job has completed. Instead, the caller should only rely on the state of the job as found in job_state.

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LOG_ENTRY Procedure

This procedure inserts a message into the log file.

Syntax

DBMS_DATAPUMP.LOG_ENTRY(
   handle IN NUMBER,
   message IN VARCHAR2     
   log_file_only IN NUMBER DEFAULT 0);

Parameters

Table 25-8  LOG_ENTRY Procedure Parameters

Parameter	Description
handle	The handle of a job. The current session must have previously attached to the handle through an OPEN or ATTACH call.
message	A text line to be added to the log file.
log_file_only	Specified text should be written only to the log file. It should not be returned in GET_STATUS work-in-progress (KU$_STATUS_WIP) messages.

Exceptions

• INVALID_HANDLE. The specified handle is not attached to a Data Pump job.
• SUCCESS_WITH_INFO. The procedure succeeded, but further information is available through the GET_STATUS procedure.
• NO_SUCH_JOB. The specified job does not exist.

Usage Notes

The message is added to the log file. If log_file_only is zero (the default), the message is also broadcast as a KU$_STATUS_WIP message through the GET_STATUS procedure to all users attached to the job.

The LOG_ENTRY procedure allows applications to tailor the log stream to match the abstractions provided by the application. For example, the command-line interface supports INCLUDE and EXCLUDE parameters defined by the user. Identifying these values as calls to the underlying METADATA_FILTER procedure would be confusing to users. Instead, the command-line interface can enter text into the log describing the settings for the INCLUDE and EXCLUDE parameters.

Lines entered in the log stream from LOG_ENTRY are prefixed by the string, ";;; "

---

METADATA_FILTER Procedure

This procedure provides filters that allow you to restrict the items that are included in a job.

Syntax

DBMS_DATAPUMP.METADATA_FILTER(
   handle       IN NUMBER,
   name         IN VARCHAR2,
   value        IN VARCHAR2,
   object_path  IN VARCHAR2 DEFAULT NULL);

Parameters

Table 25-9  METADATA_FILTER Procedure Parameters

Parameter	Description
handle	The handle returned from the OPEN procedure.
name	The name of the filter. See Table 25-10 for descriptions of the available filters.
value	The value of the filter.
object_path	The object path to which the filter applies. If the default is used, the filter applies to all applicable objects. Lists of the object paths supported for each mode are contained in the catalog views for DATABASE_EXPORT_OBJECTS, SCHEMA_EXPORT_OBJECTS, and TABLE_EXPORT_OBJECTS. (Note that the TABLE_EXPORT_OBJECTS view is applicable to both Table and Tablespace mode because their object paths are the same.) For an import operation, object paths reference the mode used to create the dump file rather than the mode being used for the import.

Table 25-10 describes the name, object type, datatype, operations that support the filter, and the meaning of the filters available with the METADATA_FILTER procedure. The datatype for all the filters is a text expression. All operations support all filters.

Table 25-10  Filters Provided by METADATA_FILTER Procedure

Name	Object Type	Meaning
INCLUDE_NAME_EXPR and EXCLUDE_NAME_EXPR	Named objects	Defines which object names are included in (INCLUDE_NAME_EXPR), or excluded from (EXCLUDE_NAME_EXPR), the job. You use the object_type parameter to limit the filter to a particular object type. For Table mode, identifies which tables are to be processed.
SCHEMA_EXPR	Schema objects	Restricts the job to objects whose owning schema name is satisfied by the expression. For Table mode, only a single SCHEMA_EXPR filter is supported. If specified, it must only specify a single schema (for example, 'IN (''SCOTT'')'). For Schema mode, identifies which users are to be processed.
TABLESPACE_EXPR	TABLE, CLUSTER, INDEX, ROLLBACK_SEGMENT	Restricts the job to objects stored in a tablespace whose name is satisfied by the expression. For Tablespace mode, identifies which tablespaces are to be processed. If a partition of an object is stored in the tablespace, the entire object is added to the job. For Transportable mode, identifies which tablespaces are to be processed. If a table has a single partition in the tablespace set, all partitions must be in the tablespace set. An index is not included within the tablespace set unless all of its partitions are in the tablespace set. A domain index is not included in the tablespace set unless all of its secondary objects are included in the tablespace set.
INCLUDE_PATH_EXPR and EXCLUDE_PATH_EXPR	All	Defines which object paths are included in, or excluded from, the job. You use these filters to select only certain object types from the database or dump file set. Objects of paths satisfying the condition are included (INCLUDE_PATH_EXPR) or excluded (EXCLUDE_PATH_EXPR) from the operation. The object_path parameter is not supported for these filters.

Exceptions

• INVALID_HANDLE. The specified handle is not attached to a Data Pump job.
• INVALID_ARGVAL. This exception can indicate any of the following conditions:
  • An object_path was specified for an INCLUDE_PATH_EXPR or EXCLUDE_PATH_EXPR filter.
  • The specified object_path is not supported for the current mode.
  • The SCHEMA_EXPR filter specified multiple schemas for a Table mode job.
• INVALID_STATE. The user called the METADATA_FILTER procedure after the job left the defining state.
• INCONSISTENT_ARGS. The filter value is of the wrong datatype or is missing.
• SUCCESS_WITH_INFO. The procedure succeeded but further information is available through the GET_STATUS procedure.
• NO_SUCH_JOB. The specified job does not exist.

Usage Notes

• Metadata filters identify a set of objects to be included or excluded from a Data Pump operation. Except for EXCLUDE_PATH_EXPR and INCLUDE_PATH_EXPR, dependent objects of an identified object will be processed along with the identified object. For example, if an index is identified for inclusion by a filter, grants upon that index will also be included by the filter. Likewise, if a table is excluded by a filter, then indexes, constraints, grants and triggers upon the table will also be excluded by the filter.
• Filters allow a user to restrict the items that are included in a job. For example, a user could request a full export, but without Package Specifications or Package Bodies.
• If multiple filters are specified for a object type, they are implicitly 'ANDed' together (that is, objects participating in the job must pass all of the filters applied to their object types).
• The same filter name can be specified multiple times within a job. For example, specifying NAME_EXPR as '!=''EMP''' and NAME_EXPR as '!=''DEPT''' on a TABLE-mode export would produce a file set containing all of the tables except for EMP and DEPT.

---

METADATA_REMAP Procedure

This procedure specifies a remapping to be applied to objects as they are processed in the specified job.

Syntax

DBMS_DATAPUMP.METADATA_REMAP (
   handle      IN NUMBER,
   name        IN VARCHAR2,
   old_value   IN VARCHAR2,
   value       IN VARCHAR2,
   object_type IN VARCHAR2 DEFAULT NULL);

Parameters

Table 25-11  METADATA_REMAP Procedure Parameters

Parameter	Description
handle	The handle for the current job. The current session must have previously attached to the handle through a call to the OPEN procedure.
name	The name of the remap. See Table 25-12 for descriptions of the available remaps.
old_value	Specifies which value in the dump file set should be reset to value.
value	The value of the parameter for the remap. This signifies the new value that old_value should be translated into.
object_type	Designates the object type to which the remap applies. The list of object types supported for each mode are contained in the DATABASE_EXPORT_OBJECTS, SCHEMA_EXPORT_OBJECTS, TABLE_EXPORT_OBJECTS, and TABLESPACE_EXPORT_OBJECTS catalog views. By default, the remap applies to all applicable objects within the job. The object_type parameter allows a caller to specify different parameters for different object types within a job. Remaps that explicitly specify an object type override remaps that apply to all object types.

Table 25-12 describes the remaps provided by the METADATA_REMAP procedure.

Table 25-12 Remaps Provided by the METADATA_REMAP Procedure

Name	Datatype	Object Type	Meaning
REMAP_SCHEMA	Text	Schema objects	Any schema object in the job that matches the object_type parameter and was located in the old_value schema will be moved to the value schema.
REMAP_TABLESPACE	Text	TABLE, INDEX, ROLLBACK_SEGMENT, MATERIALIZED_VIEW, MATERIALIZED_VIEW_LOG,TABLE_SPACE	Any storage segment in the job that matches the object_type parameter and was located in the old_value tablespace will be relocated to the value tablespace.
REMAP_DATAFILE	Text	LIBRARY, TABLESPACE, DIRECTORY	Any datafile reference in the job that matches the object_type parameter and referenced the old_value datafile will be redefined to use the value datafile.

Exceptions

• INVALID_HANDLE. The specified handle is not attached to a Data Pump job.
• INVALID_ARGVAL. This message can indicate any of the following:
  • The job's mode does not include the specified object_type.
  • The remap has already been specified for the specified old_value and object_type.
• INVALID_OPERATION. Remaps are only supported for SQL_FILE and Import operations. The job's operation was Export, which does not support the use of metadata remaps.
• INVALID_STATE. The user called METADATA_REMAP after the job had started (that is, the job was not in the defining state).
• INCONSISTENT_ARGS. There was no value supplied or it was of the wrong datatype for the remap.
• SUCCESS_WITH_INFO. The procedure succeeded, but further information is available through the GET_STATUS procedure.
• NO_SUCH_JOB. The specified job does not exist.

Usage Notes

• The METADATA_REMAP procedure is only supported for Import and SQL_FILE operations. It enables you to apply commonly desired, predefined remappings to the definition of objects as part of the transfer. If you need remaps that are not supported within this procedure, you should do a preliminary SQL_FILE operation to produce a SQL script corresponding to the dump file set. By editing the DDL directly and then executing it, you can produce any remappings that you need.
• Transforms for the DataPump API are a subset of the remaps implemented by the DBMS_METADATA.SET_TRANSFORM_PARAMETER API. Multiple remaps can be defined for a single job. However, each remap defined must be unique according its parameters. That is, two remaps cannot specify conflicting or redundant remaps.

---

METADATA_TRANSFORM Procedure

This procedure specifies transformations to be applied to objects as they are processed in the specified job.

Syntax

DBMS_DATAPUMP.METADATA_TRANSFORM (
   handle      IN NUMBER,
   name        IN VARCHAR2,
   value       IN VARCHAR2,
   object_type IN VARCHAR2 DEFAULT NULL);

Parameters

Table 25-13  METADATA_TRANSFORM Procedure Parameters

Parameter	Description
handle	The handle for the current job. The current session must have previously attached to the handle through a call to the OPEN procedure.
name	The name of the transformation. See Table 25-14 for descriptions of the available transforms.
value	The value of the parameter for the transform.
object_type	Designates the object type to which the transform applies. The list of object types supported for each mode are contained in the DATABASE_EXPORT_OBJECTS, SCHEMA_EXPORT_OBJECTS, TABLE_EXPORT_OBJECTS, and TABLESPACE_EXPORT_OBJECTS catalog views. By default, the transform applies to all applicable objects within the job. The object_type parameter allows a caller to specify different transform parameters for different object types within a job. Transforms that explicitly specify an object type override transforms that apply to all object types.

Table 25-14 describes the transforms provided by the METADATA_TRANSFORM procedure.

Table 25-14  Transforms Provided by the METADATA_TRANFORM Procedure

Name	Datatype	Object Type	Meaning
SEGMENT_ATTRIBUTES	NUMBER	TABLE, INDEX	If nonzero (TRUE), emit storage segment parameters. Defaults to 1.
STORAGE	NUMBER	TABLE	If nonzero (TRUE), emit storage clause. (Ignored if SEGMENT_ATTRIBUTES is zero.) Defaults to nonzero (TRUE).

Exceptions

• INVALID_HANDLE. The specified handle is not attached to a Data Pump job.
• INVALID_ARGVAL. This message can indicate any of the following:
  • The mode is transportable, which doesn't support transforms.
  • The job's mode does not include the specified object_type.
  • The transform has already been specified for the specified value and object_type.
• INVALID_OPERATION. Transforms are only supported for SQL_FILE and Import operations. The job's operation was Export which does not support the use of metadata transforms.
• INVALID_STATE. The user called METADATA_TRANSFORM after the job had started (that is, the job was not in the defining state).
• INCONSISTENT_ARGS. There was no value supplied or it was of the wrong datatype for the transform.
• SUCCESS_WITH_INFO. The procedure succeeded, but further information is available through the GET_STATUS procedure.
• NO_SUCH_JOB. The specified job does not exist.

Usage Notes

• The METADATA_TRANSFORM procedure is only supported for Import and SQL_FILE operations. It enables you to apply commonly desired, predefined transformations to the definition of objects as part of the transfer. If you need transforms that are not supported within this procedure, you should do a preliminary SQL_FILE operation to produce a SQL script corresponding to the dump file set. By editing the DDL directly and then executing it, you can produce any transformations that you need.
• Transforms for the DataPump API are a subset of the transforms implemented by the DBMS_METADATA.SET_TRANSFORM_PARAMETER API. Multiple transforms can be defined for a single job. However, each transform defined must be unique according its parameters. That is, two transforms cannot specify conflicting or redundant transformations.

---

OPEN Function

This function is used to declare a new job using the Data Pump API. The handle that is returned is used as a parameter for calls to all other procedures except ATTACH.

Syntax

DBMS_DATAPUMP.OPEN (
   operation   IN VARCHAR2,
   mode         IN VARCHAR2,
   remote_link  IN VARCHAR2 DEFAULT NULL,
   job_name     IN VARCHAR2 DEFAULT NULL,
   version      IN VARCHAR2 DEFAULT 'COMPATIBLE') 
 RETURN NUMBER;

Parameters

Table 25-15  OPEN Function Parameters

Parameter	Meaning
operation	The type of operation to be performed. Table 25-16 contains descriptions of valid operation types.
mode	The scope of the operation to be performed. Table 25-17 contains descriptions of valid modes. Specifying NULL generates an error.
remote_link	If the value of this parameter is non-null, it provides the name of a database link to the remote database that will be the source of data and metadata for the current job.
job_name	The name of the job. The name is limited to 30 characters; it will be truncated if more than 30 characters are used. It may consist of printable characters and spaces. It is implicitly qualified by the schema of the user executing the OPEN procedure and must be unique to that schema (that is, there cannot be other Data Pump jobs using the same name). The name is used to identify the job both within the API and with other database components such as identifying the job in the DBA_RESUMABLE view if the job becomes suspended through lack of resources. If no name is supplied, a system generated name will be provided for the job in the following format: "SYS_<OPERATION>_<MODE>_%N". The default job name is formed where %N expands to a two-digit incrementing integer starting at '01' (for example, "SYS_IMPORT_FULL_03"). The name supplied for the job will also be used to name the master table and other resources associated with the job.
version	The version of database objects to be extracted. This option is only valid for Export, network Import, and SQL_FILE operations. Database objects or attributes that are incompatible with the version will not be extracted. Legal values for this parameter are as follows: COMPATIBLE - (default) the version of the metadata corresponds to the database compatibility level and the compatibility release level for feature (as given in the V$COMPATIBILITY view). Database compatibility must be set to 9.2 or higher. LATEST - the version of the metadata corresponds to the database version. A specific database version, for example, '10.0.0'. In Oracle Database10g, this value cannot be lower than 10.0.0.

Table 25-16 describes the valid operation types for the OPEN procedure.

Table 25-16  Valid Operation Types for the OPEN Procedure

Operation	Description
EXPORT	Saves data and metadata to a dump file set or obtains an estimate of the size of the data for an operation.
IMPORT	Restores data and metadata from a dump file set or across a database link.
SQL_FILE	Displays the metadata within a dump file set, or from across a network link, as a SQL script. The location of the SQL script is specified through the ADD_FILE procedure.

Table 25-17 describes the valid modes for the OPEN procedure.

Table 25-17  Valid Modes for the OPEN Procedure

Mode	Description
FULL	Operates on the full database or full dump file set except for the SYS, XDB,ORDSYS, MDSYS, CTXSYS, ORDPLUGINS, and LBACSYS schemas.
SCHEMA	Operates on a set of selected schemas. Defaults to the schema of the current user. All objects in the selected schemas are processed. Users cannot specify SYS, XDB, ORDSYS, MDSYS, CTXSYS, ORDPLUGINS, or LBACSYS schemas for this mode.
TABLE	Operates on a set of selected tables. Defaults to all of the tables in the current user's schema. Only tables and their dependent objects are processed.
TABLESPACE	Operates on a set of selected tablespaces. No defaulting is performed. Tables that have storage in the specified tablespaces are processed in the same manner as in Table mode.
TRANSPORTABLE	Operates on metadata for tables (and their dependent objects) within a set of selected tablespaces to perform a transportable tablespace export/import.

Return Values

• An opaque handle for the job. This handle is used as input to the following procedures: SET_PARALLEL, ADD_FILE, DETACH, STOP_JOB, GET_STATUS, LOG_ENTRY, METADATA_FILTER, DATA_FILTER, METADATA_TRANSFORM, METADATA_REMAP, SET_PARAMETER, and START_JOB.

Exceptions

• INVALID_ARGVAL. An invalid operation or mode was specified. A NULL or invalid value was supplied for an input parameter. The error message text identifies the parameter.
• JOB_EXISTS. A table already exists with the specified job name.
• PRIVILEGE_ERROR. The user does not have the necessary privileges or roles to use the specified mode.
• INTERNAL_ERROR. The job was created under the wrong schema or the master table was of the wrong format.
• SUCCESS_WITH_INFO. The procedure succeeded, but further information is available through the GET_STATUS procedure.
• NO_SUCH_JOB. The specified job does not exist.

Usage Notes

• When the job is created, a master table is created for the job under the caller's schema within the caller's default tablespace. A handle referencing the job is returned that attaches the current session to the job. Once attached, the handle remains valid until either an explicit or implicit detach occurs. The handle is only valid in the caller's session. Other handles can be attached to the same job from a different session by using the ATTACH procedure.
• If the OPEN fails, call GET_STATUS with a null handle to retrieve additional information about the failure.

---

SET_PARALLEL Procedure

This procedure adjusts the degree of parallelism within a job.

Syntax

DBMS_DATAPUMP.SET_PARALLEL(
   handle      IN NUMBER,
   degree       IN NUMBER);

Parameters

Table 25-18  SET_PARALLEL Procedure Parameters

Parameter	Description
handle	The handle of a job. The current session must have previously attached to the handle through an OPEN or ATTACH call.
degree	The maximum number of worker processes that can be used for the job. You use this parameter to adjust the amount of resources used for a job.

Exceptions

• INVALID_HANDLE. The specified handle is not attached to a Data Pump job.
• INVALID_OPERATION. The SET_PARALLEL procedure is only valid for export and import operations.
• INVALID_ARGVAL. An invalid value was supplied for an input parameter.
• SUCCESS_WITH_INFO. The procedure succeeded, but further information is available through the GET_STATUS procedure.
• NO_SUCH_JOB. The specified job does not exist.

Usage Notes

• The SET_PARALLEL procedure is only available in the Enterprise Edition of the Oracle database.
• The SET_PARALLEL procedure can be executed by any session attached to a job. The job must be in one of the following states: Defining, Idling, or Executing.
• The effect of decreasing the degree of parallelism may be delayed because ongoing work needs to find an orderly completion point before SET_PARALLEL can take effect.
• Decreasing the parallelism will not result in fewer worker processes associated with the job. It will only decrease the number of worker processes that will be executing at any given time.
• Increasing the parallelism will take effect immediately if there is work that can be performed in parallel.
• The degree of parallelism requested by a user may be decreased based upon settings in the resource manager or through limitations introduced by the PROCESSES or SESSIONS initialization parameters in the init.ora file.
• To parallelize an Export job to a degree of n, the user should supply n files in the dump file set or specify a substitution variable in a file specification. Otherwise, some of the worker processes will be idle while waiting for files.
• SQL_FILE operations always operate with a degree of 1. Jobs running in the Transportable mode always operate with a degree of 1.

---

SET_PARAMETER Procedures

This procedure is used to specify job-processing options.

Syntax

DBMS_DATAPUMP.SET_PARAMETER(
   handle      IN NUMBER,
   name         IN VARCHAR2,
   value        IN VARCHAR2);

DBMS_DATAPUMP.SET_PARAMETER (
   handle      IN NUMBER,
   name         IN VARCHAR2,
  value        IN NUMBER);

Parameters

Table 25-19  SET_PARAMETER Procedure Parameters

Parameter	Description
handle	The handle of a job. The current session must have previously attached to the handle through an OPEN call.
name	The name of the parameter. Table 25-20 describes the valid parameter names.
value	The value for the specified parameter.

Table 25-20 describes the valid options for the name parameter of the SET_PARAMETER procedure.

Table 25-20  Valid Options for the name Parameter in the SET_PARAMETER Procedure

Parameter Name	Datatype	Supported Operations	Meaning
CLIENT_COMMAND	Text	All	An opaque string used to describe the current operation from the client's perspective. The command-line procedures will use this string to store the original command used to invoke the job.
ESTIMATE	Text	Export and Import	Specifies that the estimate method for the size of the tables should be performed before starting the job. If BLOCKS, a size estimate for the user tables is calculated using the count of blocks allocated to the user tables. If STATISTICS, a size estimate for the user tables is calculated using the statistics associated with each table. If no statistics are available for a table, the size of the table is estimated using BLOCKS. The ESTIMATE parameter cannot be used in Transportable Tablespace mode. Default=BLOCKS.
ESTIMATE_ONLY	Number	Export	Specifies that only the estimation portion of an export job should be performed. This option is useful for estimating the size of dump files when the size of the export is unknown.
FLASHBACK_SCN	NUMBER	Export and network Import	System change number (SCN) to serve as transactionally consistent point for reading user data. If neither FLASHBACK_SCN nor FLASHBACK_TIME is specified, there will be no transactional consistency between partitions, except for logical standby databases and Streams targets. FLASHBACK_SCN is not supported in Transportable mode.
FLASHBACK_TIME	Text	Export and network Import	Either the date and time used to determine a consistent point for reading user data or a string of the form TO_TIMESTAMP(...). If neither FLASHBACK_SCN nor FLASHBACK_TIME is specified, there will be no transactional consistency between partitions. FLASHBACK_SCN and FLASHBACK_TIME cannot both be specified for the same job. FLASHBACK_TIME is not supported in Transportable mode.
INCLUDE_METADATA	NUMBER	Export and Import	If nonzero, metadata for objects will be moved in addition to user table data. If zero, metadata for objects will not moved. This parameter converts an Export operation into an unload of user data and an Import operation into a load of user data. INCLUDE_METADATA is not supported in Transportable mode. Default=1.
REUSE_DATAFILES	NUMBER	Import	If nonzero, tablespace data files can be created using preexisting data files for tablespace creations. REUSE_DATAFILES is only supported in Full mode. Default=0
SKIP_UNUSABLE_INDEXES	NUMBER	Import	If nonzero, rows will be inserted into tables having unusable indexes. SKIP_UNUSABLE_INDEXES is not supported in Transportable mode. Default=1
TABLE_EXISTS_ACTION	Text	Import	Specifies the action to be performed when data is loaded into a preexisting table. The possible actions are: TRUNCATE, REPLACE, APPEND, and SKIP. If INCLUDE_METADATA=0, only TRUNCATE and APPEND are supported. If TRUNCATE, rows are removed from a preexisting table before inserting rows from the Import. Note that if TRUNCATE is specified on tables referenced by foreign key constraints, the TRUNCATE will be modified into a REPLACE. If REPLACE, preexisting tables are replaced with new definitions. Before creating the new table, the old table is dropped. If APPEND, new rows are added to the existing rows in the table. If SKIP, the preexisting table is left unchanged. TABLE_EXISTS_ACTION is not supported in Transportable mode. The default is SKIP if metadata is included in the import. The default is APPEND if INCLUDE_METADATA is set to 0.
TABLESPACE_DATAFILE	Text	Import	Specifies the full file specification for a datafile in the transportable tablespace set. TABLESPACE_DATAFILE is only valid for transportable mode imports. TABLESPACE_DATAFILE can be specified multiple times, but the value specified for each occurrence must be different.
TTS_FULL_CHECK	NUMBER	Export	If nonzero, verifies that a transportable tablespace set has no dependencies (specifically, IN pointers) on objects outside the set, and vice versa. Only valid for Transportable mode Exports. Default=0.
USER_METADATA	NUMBER	Export and network Import	For schema-mode operations, specifies that the metadata to re-create the users' schemas (for example, privilege grants to the exported schemas) should also be part of the operation if set to nonzero. Users must be privileged to explicitly set this parameter. The USER_METADATA parameter cannot be used in Table, Tablespace, or Transportable Tablespace mode. Default=1 if user has EXP_FULL_DATABASE role; 0 otherwise.

Exceptions

• INVALID_HANDLE. The specified handle is not attached to a Data Pump job.
• INVALID_ARGVAL. This exception could be due to any of the following causes:
  • An invalid name was supplied for an input parameter
  • The wrong datatype was used for value
  • A value was not supplied
  • The supplied value was not allowed for the specified parameter name
  • A flashback parameter had been established after a different flashback parameter had already been established
  • A parameter was specified that did not support duplicate definitions
• INVALID_OPERATION. The operation specified is invalid in this context.
• INVALID_STATE. The specified job is not in the Defining state.
• INCONSISTENT_ARGS. Either the specified parameter is not supported for the current operation type or it is not supported for the current mode.
• PRIVILEGE_ERROR. The user does not have the EXP_FULL_DATABASE or IMP_FULL_DATABASE role required for the specified parameter.
• SUCCESS_WITH_INFO. The procedure succeeded, but further information is available through the GET_STATUS procedure.
• NO_SUCH_JOB. The specified job does not exist.

Usage Notes

• The SET_PARAMETER procedure is used to specify optional features for the current job. See Table 25-20 for a list of supported options.

---

START_JOB Procedure

This procedure begins or resumes execution of a job.

Syntax

DBMS_DATAPUMP.START_JOB (
   handle       IN NUMBER,
   skip_current IN NUMBER DEFAULT 0);

Parameters

Table 25-21  START_JOB Procedure Parameters

Parameter	Description
handle	The handle of a job. The current session must have previously attached to the handle through either the OPEN or ATTACH procedure.
skip_current	If nonzero, causes actions that were 'in progress' on a previous execution of the job to be skipped when the job restarts. The skip will only be honored for Import jobs. This mechanism allows the user to skip actions that trigger fatal bugs and cause the premature termination of a job. Multiple actions can be skipped on a restart. The log file will identify which actions are skipped. If a domain index was being processed, all pieces of the domain index are skipped even if the error occurred in only a subcomponent of the domain index. A description of the actions skipped is entered into the log file. skip_current is ignored for the initial START_JOB in a job. If zero, no data or metadata is lost upon a restart.

Exceptions

• INVALID_HANDLE. The specified handle is not attached to a Data Pump job.
• INVALID_STATE. The causes of this exception can be any of the following:
  • No files have been defined for an Export, non-network Import, or SQL_FILE job
  • An ADD_FILE procedure has not been called to define the output for a SQL_FILE job
  • A TABLESPACE_DATAFILE parameter has not been defined for a Transportable Import job
  • A TABLESPACE_EXPR metadata filter has not been defined for a Transportable or Tablespace mode Export or Network job
  • The dump file set on an Import of SQL_FILE job was either incomplete or missing a master table specification
• INVALID_OPERATION. Unable to restore master table from a dump file set.
• INTERNAL_ERROR. An inconsistency was detected when the job was started. Additional information may be available through the GET_STATUS procedure.
• SUCCESS_WITH_INFO. The procedure succeeded, but further information is available through the GET_STATUS procedure.
• NO_SUCH_JOB. The specified job does not exist.

Usage Notes

• When this procedure is called to request that the corresponding job be started or restarted, the state of the job is changed from either the Defining or Idling state to the Executing state.
• If the SET_PARALLEL procedure was not called prior to the START_JOB procedure, the initial level of parallelism used in the job will be 1. If SET_PARALLEL was called prior to the job starting, the degree specified by the last SET_PARALLEL call determines the parallelism for the job. On restarts, the parallelism is determined by the previous parallel setting for the job, unless it is overridden by another SET_PARALLEL call.
• To restart a stopped job, an ATTACH must be performed prior to executing the START_JOB procedure.

---

STOP_JOB Procedure

This procedure terminates a job, but optionally, preserves the state of the job.

Syntax

DBMS_DATAPUMP.STOP_JOB (
   handle     IN NUMBER,
   immediate   IN NUMBER DEFAULT 0,
   keep_master IN NUMBER DEFAULT NULL,
   delay       IN NUMBER DEFAULT 0);

Parameters

Table 25-22  STOP_JOB Procedure Parameters

Parameter	Description
handle	The handle of a job. The current session must have previously attached to the handle through an OPEN or ATTACH call. At the end of the procedure, the user is detached from the handle.
immediate	If nonzero, the worker processes are aborted immediately. If zero, the worker processes are allowed to complete their current work item (either metadata or table data) before they are terminated. Performing an immediate shutdown halts the job more quickly, but parts of the job will have to be rerun if the job is ever restarted.
keep_master	If nonzero, the master table is retained when the job is stopped. If zero, the master table is dropped when the job is stopped. If the master table is dropped, the job will not be restartable. If the master table is dropped during an export job, the created dump files are deleted.
delay	The number of seconds to wait until other attached sessions are forcibly detached. The delay allows other sessions attached to the job to be notified that a stop has been performed. The job keeps running until either all clients have detached or the delay has been satisfied. If no delay is specified, then the default delay is 60 seconds. If a shorter delay is used, clients might not be able to retrieve the final messages for the job through the GET_STATUS procedure.

Exceptions

• INVALID_HANDLE. The specified handle is not attached to a Data Pump job.
• INVALID STATE. The job is already in the process of being stopped or completed.
• SUCCESS_WITH_INFO. The procedure succeeded, but further information is available through the GET_STATUS procedure.
• NO_SUCH_JOB. The specified job does not exist.

Usage Notes

• This procedure is used to request that the corresponding job stop executing.
• The termination of a job that is in an Executing state may take several minutes to complete in an orderly fashion.
• For jobs in the Defining, Idling, or Completing states, this procedure is functionally equivalent to the DETACH procedure.
• Once a job is stopped, it can be restarted using the ATTACH and START_JOB procedures, provided the master table and the dump file set are left intact.
• If the KEEP_MASTER parameter is not specified, and the job is in the Defining state or has a mode of Transportable, the master table is dropped. Otherwise, the master table is retained.