Problem: Loss of lock structure

In your data sharing environment, you might encounter an error that is caused by a loss of lock structure.

Symptom

Locking requests are suspended until the lock structure is rebuilt. If the lock structure cannot be rebuilt, the following messages appears:

DXR136I irlmx HAS DISCONNECTED FROM THE DATA SHARING GROUP

DXR143I irlmx REBUILDING LOCK STRUCTURE BECAUSE IT HAS FAILED OR AN IRLM
        LOST CONNECTION TO IT

System action

DXR146I is issued for a successful rebuild of the lock structure. If the structure cannot be rebuilt, all active members of the group terminate abnormally with a 00E30105 abend code.

Important: If the lock structure cannot be rebuilt, the lost connectivity causes the members of the group to abend. In this case, a group restart is required.

System programmer action

You must fix the problem that is causing the loss of connectivity. If the problem is not an obvious one (such as a power failure), call IBM® Support. See message DXR135E for the root cause of the problem and the corrective procedure.

After the problem is fixed, restart any failed members as quickly as possible to release retained locks. For the loss of lock structure, if the automatic rebuild occurred normally, processing can continue while you wait for the coupling facility problem to be fixed.