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Oracle® Database Reference
10g Release 1 (10.1)

Part Number B10755-01
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DBA_FEATURE_USAGE_STATISTICS

DBA_FEATURE_USAGE_STATISTICS displays information about database feature usage statistics.

Column Datatype NULL Description
DBID NUMBER NOT NULL Database identifier of the database being tracked
NAME VARCHAR2(64) NOT NULL Name of the feature (See Table 3-1)
VERSION VARCHAR2(17) NOT NULL Database version in which the feature was tracked
DETECTED_USAGES NUMBER NOT NULL Number of times the system has detected usage for the feature
TOTAL_SAMPLES NUMBER NOT NULL Number of times the system has woken up and checked for feature usage
CURRENTLY_USED VARCHAR2(5)   Indicates whether usage was detected the last time the system checked (TRUE) or not (FALSE)
FIRST_USAGE_DATE DATE   First sample time the system detected usage of the feature
LAST_USAGE_DATE DATE   Last sample time the system detected usage of the feature
AUX_COUNT NUMBER   This column stores feature-specific usage data in number format.
FEATURE_INFO CLOB   This column stores feature-specific usage data in character format.
LAST_SAMPLE_DATE DATE   Amount of time (in seconds) between the last two usage sample times
LAST_SAMPLE_PERIOD NUMBER   Amount of time (in hours) between the last two usage sample times
SAMPLE_INTERVAL NUMBER   Sample interval
DESCRIPTION VARCHAR2(128)   Description of the feature and usage detection logic (See Table 3-1)

Table 3-1 DBA_FEATURE_USAGE_STATISTICS Statistics

Name Description
Advanced Replication Advanced Replication has been enabled.
Advanced Security External Global users are configured.
Audit Options Audit options in use.
Automatic Database Diagnostic Monitor A task for the Automatic Database Diagnostic Monitor has been executed.
Automatic Segment Space Management (system) Extents of locally managed tablespaces are managed automatically by Oracle.
Automatic Segment Space Management (user) Extents of locally managed user tablespaces are managed automatically by Oracle.
Automatic SQL Execution Memory Sizing of work areas for all dedicated sessions (PGA) is automatic.
Automatic Storage Manager Automatic Storage Management has been enabled
Automatic Undo Management Oracle automatically manages undo data using an UNDO tablespace.
Automatic Workload Repository A manual Automatic Workload Repository (AWR) snapshot was taken in the last sample period.
Change-Aware Incremental Backup Track blocks that have changed in the database.
Client Identifier Application User Proxy Authentication: Client Identifier is used at this specific time.
Data Guard Data Guard, a set of services, is being used to create, maintain, manage, and monitor one or more standby databases.
Data Guard Broker Data Guard Broker, the framework that handles the creation maintenance, and monitoring of Data Guard, is being used
Data Mining Oracle Data Mining option is being used.
Dynamic SGA The Oracle SGA has been dynamically resized through an ALTER SYSTEM SET statement.
File Mapping File Mapping, the mechanism that shows a complete mapping of a file to logical volumes and physical devices, is being used.
Flashback Database Flashback Database, a rewind button for the database, is enabled
Internode Parallel Execution Internode Parallel Execution is being used.
Label Security Oracle Label Security, that enables label-based access control Oracle applications, is being used.
Locally Managed Tablespaces (system) There exists tablespaces that are locally managed in the database.
Locally Managed Tablespaces (user) There exists user tablespaces that are locally managed in the database.
Messaging Gateway Messaging Gateway, that enables communication between non-Oracle messaging systems and Advanced Queuing (AQ), link configured.
MTTR Advisor Mean Time to Recover Advisor is enabled.
Multiple Block Sizes Multiple Block Sizes are being used with this database.
OLAP - Analytic Workspaces OLAP - the analytic workspaces stored in the database.
OLAP - Cubes OLAP - number of cubes in the OLAP catalog that are fully mapped and accessible by the OLAP API.
Oracle Managed Files Database files are being managed by Oracle.
Parallel SQL DDL Execution Parallel SQL DDL Execution is being used.
Parallel SQL DML Execution Parallel SQL DML Execution is being used.
Parallel SQL Query Execution Parallel SQL Query Execution is being used.
Partitioning (system) Oracle Partitioning option is being used - there is at least one partitioned object created.
Partitioning (user) Oracle Partitioning option is being used - there is at least one user partitioned object created.
PL/SQL Native Compilation PL/SQL Native Compilation is being used - there is at least one natively compiled PL/SQL library unit in the database.
Protection Mode - Maximum Availability Data Guard configuration data protection mode is Maximum Availability.
Protection Mode - Maximum Performance Data Guard configuration data protection mode is Maximum Performance.
Protection Mode - Maximum Protection Data Guard configuration data protection mode is Maximum Protection.
Protection Mode - Unprotected Data Guard configuration data protection mode is Unprotected.
Real Application Clusters (RAC) Real Application Clusters (RAC) is configured.
Recovery Area The recovery area is configured.
Recovery Manager (RMAN) Recovery Manager (RMAN) is being used to backup the database.
RMAN - Disk Backup Recovery Manager (RMAN) is being used to backup the database to disk.
RMAN - Tape Backup Recovery Manager (RMAN) is being used to backup the database to tape.
Resource Manager Oracle Database Resource Manager is being used to control database resources.
Segment Advisor A task for Segment Advisor has been executed.
Server Parameter File The server parameter file (SPFILE) was used to startup the database.
SGA/Memory Advisor SGA/Memory Advisor has been used.
Shared Server The database is configured as Shared Server, where the server process can service multiple user processes.
Spatial There is at least one usage of the Oracle Spatial index metadata table.
SQL Access Advisor A task for SQL Access Advisor has been executed.
SQL Tuning Advisor SQL Tuning Advisor has been used.
SQL Tuning Set A SQL Tuning Set has been created in the database.
Standby Archival - LGWR Data Guard configuration: Remote archival is done by LGWR.
Standby Archival - ARCH Data Guard configuration: Remote archival is done by ARCH.
Standby Transmission Standby database: Network transmission mode was chosen for a standby destination.
Streams (system) Oracle Streams has been configured
Streams (user) Users have configured Oracle Streams
Tablespace Advisor Tablespace Advisor has been used.
Transparent Gateway Heterogeneous Connectivity, access to a non-Oracle system, has been configured.
Undo Advisor Undo Advisor has been used.
Virtual Private Database (VPD) Virtual Private Database (VPD) policies are being used.