Oracle9i Database Reference
Release 1 (9.0.1)

Part Number A90190-02
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Dynamic Performance (V$) Views, 167 of 211


V$SHARED_POOL_RESERVED

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. 

REQUEST_FAILURES 

NUMBER 

Number of times that no memory was found to satisfy a request (that is, the number of times the error ORA-4031 occurred)  

LAST_FAILURE_SIZE 

NUMBER 

Request size of the last failed request (that is, the request size for the last ORA-4031 error) 

ABORTED_REQUEST_THRESHOLD 

NUMBER 

Minimum size of a request which signals an ORA-4031 error without flushing objects 

ABORTED_REQUESTS 

NUMBER 

Number of requests that signalled an ORA-4031 error without flushing objects 

LAST_ABORTED_SIZE 

NUMBER 

Last size of the request that returned an ORA-4031 error without flushing objects from the LRU list 


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