Mvsckey Not Found Exclusive !free! -

Use the system command D GRS,RES=(*,dataset.name) to see who currently owns the resource. This will tell you the Job Name and the type of lock (Shared vs. Exclusive). 2. Check Job Dependencies

I can provide the specific or JCL parameters you need once I know your setup. mvsckey not found exclusive

This indicates the type of access being requested. Exclusive access means no other task can read or write to the file while it is in use. Common Causes for This Conflict Use the system command D GRS,RES=(*,dataset

The system cannot locate the expected control block or key. Exclusive access means no other task can read

This refers to the specific key or identifier the system uses to track a resource in memory.

Are you seeing this in a or a CICS environment ? Do you have the exact error code or log snippet? Are you the administrator or an end-user ?

A JCL job might be running that has the file allocated with DISP=OLD.