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Oracle® Database Reference
11g Release 2 (11.2)

E40402-10
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V$SESSION_OBJECT_CACHE

V$SESSION_OBJECT_CACHE displays object cache statistics for the current user session on the local server (instance).

Column Datatype Description
PINS NUMBER Number of object pins or look-ups in the cache
HITS NUMBER Number of object pins that found the object already in the cache
TRUE_HITS NUMBER Number of object pins that found the object already in the cache and in the desired state (thus, not requiring refresh from the database)
HIT_RATIO NUMBER Ratio of HITS / PINS
TRUE_HIT_RATIO NUMBER Ratio of TRUE_HITS/PINS
OBJECT_REFRESHES NUMBER Number of objects in the cache that were refreshed with a new value from the database
CACHE_REFRESHES NUMBER Number of times the whole cache (all objects) were refreshed
OBJECT_FLUSHES NUMBER Number of objects in the cache that were flushed to the database
CACHE_FLUSHES NUMBER Number of times the whole cache (all objects) were flushed to the database
CACHE_SHRINKS NUMBER Number of times the cache was shrunk to the optimal size
CACHED_OBJECTS NUMBER Number of objects currently cached
PINNED_OBJECTS NUMBER Number of objects currently pinned
CACHE_SIZE NUMBER Current size of the cache (in bytes)
OPTIMAL_SIZE NUMBER Optimal size of the cache (in bytes)
MAXIMUM_SIZE NUMBER Maximum size of the cache (in bytes)