DB2 9 & 10 for z/OS Overview

Migration Planning WorkshopMore Index Enhancements• RID list overflows to workfileinstead of relational scan(MAXRBLK was 8MB, now 400MB)– Eliminate RID list failures from all fourcauses– DB2 9 had it for pair-wise join– MAXTEMPS_RID new ZParm• Referential integrity checkperformance– Sequential detection and index lookaside for RI• Avoid RI check for each insert of achild under the same parentRIDsRID limit exceeded:-RDS limit-DM limit-Exceed proc limit-No storage... ...(WF)167© 2011 IBM Corporation