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Oracle® Database Reference
12c Release 1 (12.1)

E17615-24
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V$SUBCACHE

V$SUBCACHE displays information about the subordinate caches currently loaded into library cache memory. The view walks through the library cache, printing out a row for each loaded subordinate cache per library cache object.

Column Datatype Description
OWNER_NAME VARCHAR2(64) Owner of the object containing these cache entries
NAME VARCHAR2(1000) Object Name
TYPE NUMBER Object Type
HEAP_NUM NUMBER Heap number containing this subordinate cache
CACHE_ID NUMBER Subordinate cache ID
CACHE_CNT NUMBER Number of entries for this cache in this object
HEAP_SZ NUMBER Amount of extent space allocated to this heap
HEAP_ALOC NUMBER Amount of extent space allocated from this heap
HEAP_USED NUMBER Amount of space utilized in this heap
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