Expert Advice

KDP_RID_Fallback_Warning

Start of change

Situation Description

After accessing a DB2 table, DB2 was unable to use more than one index because there is insufficient storage for the candidate RID lists and RID pool fallback.

End of change
Start of change

Suggested Actions

Increase the maximum RID pool size. However, if the available RID pool storage is too small, the statement might revert to a table space scan. The general formula for computing RID pool size is: Number of concurrent RID processing activities × average number of RIDs × 2 × 5 bytes per RID.

(c) Copyright IBM Corp. 2005, 2008. All rights reserved. US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.Contact IBM.

End of change