DB2 9 & 10 for z/OS Overview

Migration Planning WorkshopREORG TABLESPACE…• Performance improvement for partition-level REORGwith NPI’s and REORG INDEX– Index list prefetch results in up to 60% ET reduction• Messaging to estimate log apply phase time to completion andSWITCH phase begin is estimated to miss the DEADLINE– SHRLEVEL REF or CHANGE only– DSNU383I in addition to DSNU105I• REORG of multiple non-contiguous partitions allowed– Changes behavior from DB2 9– Customers who perform multi-part REORGs can now specify multiple partsin a single command• Ex: REORG TABLESPACE PARTS (1,5,10:15, 20:23)– Retro-fitted into v9 via PM22336183© 2011 IBM Corporation