When your monitoring indicates that the structure is getting full, you can take several actions. First, until you resolve the storage problem, your application could minimize its issuance of IXLCACHE requests that create or modify cache entries. Your application can also issue a message to the operator to warn that the structure is getting full and to request that the operator perform certain actions.

You can issue IXLCACHE REQUEST=READ_STGSTATS or IXLMG to determine how full each storage class in the structure is becoming. See Managing Cache Structure Resources for a description of how storage in the structure can be reclaimed.

If the structure is running out of elements but has plenty of entries (or vice versa), you can rebuild or alter the structure with a different ratio of elements to entries without changing the structure's size. Because the structure is not changing size, operator intervention is only required if altering ratios and the SETXCF MODIFY command is used to disable alter processing for the structure.

If the structure needs more directory entries or data elements, you can rebuild or alter the structure with more storage. Rebuilding or altering the structure with more storage might require operator intervention.