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Sort Pool Size

Larger sort pools produce fewer sort runs. If the sort pool is large enough, the buffer pools and sort work files may not be used. You want to set a large size for the sort pool and work file database because you do not want sorts to have pages being written to disk.

Note: If buffer pools and work file database are not used, the better performance will be due to less I/O.

The sort pool size defaults to 2 MB unless a different size is specified. The sort pool can range in size from 240 KB to 128 MB. The size of the sort pool is set during installation using DSNZPARM.