Performance considerations
The Identification keywords run a query against the HCL Workload Automation for Z Current Plan, and extract key information for every operation that matches. The Filter keywords filter down this information before taking action. The more precise you are in the Identification keywords, the faster the process will complete. Therefore, consider how many matches you might expect to find on the current plan at any one time using the Identification keywords when considering the estimated duration of the command.
Note: Using these commands can produce a lot of updates to the current
plan, if you use the
COUNT(0)
feature. This
can be across many different occurrences. The command automatically
performs a PIF EXECUTE MCPBLK
command after
every change of occurrence to ensure no more than 255 operations are
modified in a single transaction.