Siebel Order Management Infrastructure Guide > PSP Engine > About Tuning Performance of PSP >

Setting Cache Size

To control cache size, use the following server parameters:

• PSP Level 1 Cache Max Item Count. The server parameter with this display name is PSPCacheMaxItemCntLevel1. This is the maximum number of business component/cache refresh key combinations (for example: Price List Item/Price List Id = '12-12345'). The default value is 10000.
• PSP Level 2 Cache Max Item Count. The server parameter with this display name is PSPCacheMaxItemCntLevel2. This is the maximum number of distinct queries cached for each PSP Level 1 Item. The default value is 10000.

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 on setting server parameters, see Siebel System Administration Guide.