IBM MQ for z/OS abends

Abends can occur in WebSphere® for z/OS® or other z/OS systems. Use this topic to understand the IBM® MQ system abend codes and how to investigate abends which occur in CICS®, IMS, and z/OS.

X'5C6'

An X'5C6' abend completion code indicates that IBM MQ has detected an internal error and has terminated an internal task (TCB) or a user-connected task abnormally. Errors associated with a X'5C6' abend completion code might be preceded by a z/OS system code, or by internal errors.

Examine the diagnostic material generated by the X'5C6' abend to determine the source of the error that actually resulted in a subsequent task or subsystem termination.

X'6C6'

An X'6C6' abend completion code indicates that IBM MQ has detected a severe error and has terminated the queue manager abnormally. When a X'6C6' is issued, IBM MQ has determined that continued operation could result in the loss of data integrity. Errors associated with a X'6C6' abend completion code might be preceded by a z/OS system error, one or more X'5C6' abend completion codes, or by error message CSQV086E indicating abnormal termination of IBM MQ.

Table 1 summarizes the actions and diagnostic information available to IBM MQ for z/OS when these abend completion codes are issued. Different pieces of this information are relevant in different error situations. The information produced for a particular error depends upon the specific problem. For more information about the z/OS services that provide diagnostic information, see Diagnostic information produced on IBM MQ for z/OS.