If a request from a selection panel seems to be taking an abnormally long time to process, the delay could be related to legitimate selection criteria you have specified. Because the entries in the list generated must meet all of the criteria you establish on the selection panels, each value you specify must be verified before the list can be generated. To speed up processing you can try the following:

• Limit the number of entries in the list by making your selection criteria more specific.
• For data set selection, the time it takes to build a list is affected by the number of times ISMF must access the catalog or VTOC. If you are generating the list from the catalog, observe the following rules:
  • Do not acquire data for data sets migrated by DFSMShsm.
  • Do not acquire data from the volume.