Dynamic Performance (V$) Views, 26 of 238

V$CACHE

This is an Oracle9i Real Application Clusters view. This view contains information from the block header of each block in the SGA of the current instance as related to particular database objects.

Column	Datatype	Description
`FILE#`	`NUMBER`	Datafile identifier number (to find filename, query `DBA_DATA_FILES` or `V$DBFILES`)
`BLOCK#`	`NUMBER`	Block number
`CLASS#`	`NUMBER`	Class number
`STATUS`	`VARCHAR2(1)`	Status of block: `FREE` - Not currently in use `XCUR` - Exclusive `SCUR` - Shared current `CR` - Consistent read `READ` - Being read from disk `MREC` - In media recovery mode `IREC` - In instance recovery mode
`XNC`	`NUMBER`	Number of PCM x to null lock conversions due to contention with another instance. This column is obsolete and maintained only for compatibility reasons.
`FORCED_READS`	`NUMBER`	Forced reads
`FORCED_WRITES`	`NUMBER`	Forced writes
`NAME`	`VARCHAR2(30)`	Name of the database object containing the block
`PARTITION_NAME`	`VARCHAR2(30)`	Name of the partition; NULL for non-partitioned objects
`KIND`	`VARCHAR2(12)`	Type of database object: `1` - Index `2` - Table `3` - Cluster `4` - View `5` - Synonym `6` - Sequence `7` - Procedure `8` - Function `9` - Package `10` - Nonexistent `11` - Package body `12` - Trigger `13` - Type `14` - Type body `19` - Table partition `20` - Index partition `21` - LOB `22` - Library `Null` - Unknown
`OWNER#`	`NUMBER`	Owner number
`LOCK_ELEMENT_ADDR`	`RAW(4 \| 8)`	Address of the lock element that contains the PCM lock that is covering the buffer. If more than one buffer has the same address, then these buffers are covered by the same PCM lock.
`LOCK_ELEMENT_NAME`	`NUMBER`	Address of the lock element that contains the PCM lock that is covering the buffer. If more than one buffer has the same address, then these buffers are covered by the same PCM lock.