The application may be trying to call an advanced feature that requires an .
The most frequent culprit is a "locked" dataset. Here is why it happens: mvsckey not found exclusive
| Cause | Action | |-------|--------| | | Cancel the job or subsystem holding the exclusive ENQ. Use F GRS,RESET only as a last resort. | | Deadlock | IMS: Issue /DISPLAY TRANSACTION to find hung units of work. CICS: Use CEMT I TASK to identify and force-purge the offending task. | | Corrupt lock table | Restart GRS (requires IPL in most cases) or restart the failing subsystem (e.g., IMS control region). | | Monitoring tool bug | Apply the latest PTF for the monitoring product or temporarily disable its storage key hooks via a PARMLIB override. | The application may be trying to call an
REPRO INFILE(your.vsam.dataset) OUTFILE(dummy) VERIFY Use F GRS,RESET only as a last resort