Hello  Community, this entry describes a performance enhancement involving the current plan VSAM dataset LSR buffering to be used in case of big workloads. Apar PM12394 that implements the enhancement, is available all TWS for z/OS releases (8.3.0 and later).      The use of parameters CPBPLIM and CPDTLIM in controller OPCOPTS can cause performance issues when storage fragmentation occurs due to big plans execution.  CPBPLIM allows to choose which percentage of the available storage can be used to allocate the buffers, CPDTLIM allows to choose... [More]

Tags:  pm12394 plan buffers pool buffer current vsam lsr cp