1. Database Reference
  2. Dynamic Performance Views
  3. Dynamic Performance (V$) Views: V$IM_COLUMN_LEVEL to V$RULE_SET_AGGREGATE_STATS
  4. V$LIBRARY_CACHE_MEMORY

8.35 V$LIBRARY_CACHE_MEMORY

V$LIBRARY_CACHE_MEMORY displays information about memory allocated to library cache memory objects in different namespaces.

A memory object is an internal grouping of memory for efficient management. A library cache object may consist of one or more memory objects.

Column Datatype Description

LC_NAMESPACE

VARCHAR2(15)

Library cache namespace

LC_INUSE_MEMORY_OBJECTS

NUMBER

Number of library cache memory objects currently in use in the shared pool

LC_INUSE_MEMORY_SIZE

NUMBER

Total size of library cache in-use memory objects (in megabytes)

LC_FREEABLE_MEMORY_OBJECTS

NUMBER

Number of freeable library cache memory objects in the shared pool

LC_FREEABLE_MEMORY_SIZE

NUMBER

Size of library cache freeable memory objects (in megabytes)

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