Siebel Order Management Infrastructure Guide > PSP Engine > About Tuning Performance of PSP >
Setting Cache Size
To control cache size, use the following server parameters:
When either Level 1 or Level 2 cache reaches capacity, the least recently used query results are dropped to make space for new cache entries.
It is not possible to directly control the amount of memory consumed by the PSP cache by setting a total size for PSP cache, as the architecture does not count the memory of each cache item.
NOTE: You must restart the Siebel server for any parameter changes to take effect.
For information about setting server parameters, see Siebel System Administration Guide.