1. Database Reference
  2. Dynamic Performance Views
  3. Dynamic Performance (V$) Views: V$ACCESS to V$HVMASTER_INFO
  4. V$BT_SCAN_CACHE

7.115 V$BT_SCAN_CACHE

V$BT_SCAN_CACHE shows the parameters and status of the big table cache section.

Column Datatype Description

BT_CACHE_ALLOC

NUMBER

Current ratio of the big table cache section to the buffer cache

BT_CACHE_TARGET

NUMBER

Target ratio of the big table cache section to the buffer cache

OBJECT_COUNT

NUMBER

Number of objects tracked by the big table cache section

MEMORY_BUF_ALLOC

NUMBER

Number of memory buffers allocated by the big table cache section to objects

MIN_CACHED_TEMP

NUMBER

Minimum temperature of any object that is allowed to be cached by the big table cache section

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