8.109 V$BT_SCAN_OBJ_TEMPS

V$BT_SCAN_OBJ_TEMPS shows the active objects currently tracked by the big table cache.

Column Datatype Description

TS#

NUMBER

Tablespace number

DATAOBJ#

NUMBER

Data object number (objd)

SIZE_IN_BLKS

NUMBER

Size of the object being scanned on this instance, in blocks

TEMPERATURE

NUMBER

Temperature of this object

POLICY

VARCHAR2(10)

Caching policy of this object. Possible values:

  • MEM_ONLY: This object will be fully cached in memory.

  • MEM_PART: This object will be partially cached in memory and some portion will remain on disk and will not be cached.

  • DISK: this object will not be cached in memory or flash for the scan at all.

  • INVALID: The caching policy is not valid.

CACHED_IN_MEM

NUMBER

The number of blocks that are cached/allocated in memory for this object

CON_ID

NUMBER

The ID of the container to which the data pertains. Possible values include:

  • 0: This value is used for rows containing data that pertain to the entire CDB. This value is also used for rows in non-CDBs.

  • 1: This value is used for rows containing data that pertain to only the root

  • n: Where n is the applicable container ID for the rows containing data

See Also:

"DB_BIG_TABLE_CACHE_PERCENT_TARGET" for more information about enabling the big table cache