By: Brian Lee, Software Development, IBM
VSAM and RLS New Functions in z/OS 2.1 and 2.2
Thursday, August 13, 2015: 11:15 AM
The session will also be available for live streaming:
Does the term "CI split" send a chill up your spine? Do you spend sleepless nights reorganizing your files? Time to stop worrying and get some rest with z/OS 2.2 and VSAM RLS "Index Record Locking". VSAM RLS users have long blamed poor KSDS performance on control interval (CI) splits and their lesser known cousin, the "CI reclaim". Spanned record processing is also perceived to run at a snail's pace. All that is due to the operations locking up the data sets exclusively across the systems. With VSAM RLS Index Record Locking in z/OS 2.2, these operations against different data control areas of the same KSDS that do not modify the high-level index are now serialized only at an index record level. As never before, that allows simultaneous CI splits, CI reclaims, and spanned-record operations.