This fixed view lists statistics that help you tune the reserved pool and space within the shared pool.
| Column | Datatype | Description |
|---|---|---|
The following columns of V$SHARED_POOL_RESERVED are valid only if the initialization parameter SHARED_POOL_RESERVED_SIZE is set to a valid value.
See Also: "SHARED_POOL_RESERVED_SIZE" |
||
FREE_SPACE |
NUMBER |
Total amount of free space on the reserved list |
AVG_FREE_SIZE |
NUMBER |
Average size of the free memory on the reserved list |
FREE_COUNT |
NUMBER |
Number of free pieces of memory on the reserved list |
MAX_FREE_SIZE |
NUMBER |
Size of the largest free piece of memory on the reserved list |
USED_SPACE |
NUMBER |
Total amount of used memory on the reserved list |
AVG_USED_SIZE |
NUMBER |
Average size of the used memory on the reserved list |
USED_COUNT |
NUMBER |
Number of used pieces of memory on the reserved list |
MAX_USED_SIZE |
NUMBER |
Size of the largest used piece of memory on the reserved list |
REQUESTS |
NUMBER |
Number of times that the reserved list was searched for a free piece of memory |
REQUEST_MISSES |
NUMBER |
Number of times the reserved list did not have a free piece of memory to satisfy the request, and started flushing objects from the LRU list |
LAST_MISS_SIZE |
NUMBER |
Request size of the last request miss, when the reserved list did not have a free piece of memory to satisfy the request and started flushing objects from the LRU list |
MAX_MISS_SIZE |
NUMBER |
Request size of the largest request miss, when the reserved list did not have a free piece of memory to satisfy the request and started flushing objects from the LRU list |
The following columns of V$SHARED_POOL_RESERVED contain values which are valid even if SHARED_POOL_RESERVED_SIZE is not set. |
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REQUEST_FAILURES |
NUMBER |
Number of times that no memory was found to satisfy a request (that is, the number of times the error ORA-04031 occurred) |
LAST_FAILURE_SIZE |
NUMBER |
Request size of the last failed request (that is, the request size for the last ORA-04031 error) |
ABORTED_REQUEST_THRESHOLD |
NUMBER |
Minimum size of a request which signals an ORA-04031 error without flushing objects |
ABORTED_REQUESTS |
NUMBER |
Number of requests that signalled an ORA-04031 error without flushing objects |
LAST_ABORTED_SIZE |
NUMBER |
Last size of the request that returned an ORA-04031 error without flushing objects from the LRU list |