SHARED_POOL_RESERVED_SIZE

Parameter type	Big integer
Syntax	SHARED_POOL_RESERVED_SIZE = integer [K | M | G]
Default value	5% of the value of SHARED_POOL_SIZE
Parameter class	Static
Range of values	Minimum: 5000 Maximum: one half of the value of SHARED_POOL_SIZE

SHARED_POOL_RESERVED_SIZE specifies (in bytes) the shared pool space that is reserved for large contiguous requests for shared pool memory.

You can use this parameter to avoid performance degradation in the shared pool in situations where pool fragmentation forces Oracle to search for and free chunks of unused pool to satisfy the current request.

See Also: Oracle9i Database Performance Tuning Guide and Reference for more information on setting this parameter "SHARED_POOL_SIZE"