Some cases where the put calls fail

 

If certain attributes of a queue are changed using the FORCE option on a command during the interval between you issuing an MQOPEN and an MQPUT call, the MQPUT call fails and returns the MQRC_OBJECT_CHANGED reason code. The queue manager marks the object handle as being no longer valid. This also happens if the changes are made while an MQPUT1 call is being processed, or if the changes apply to any queue to which the queue name resolves. The attributes that affect the handle in this way are listed in the description of the MQOPEN call in the Application Programming Reference. If your call returns the MQRC_OBJECT_CHANGED reason code, close the queue, reopen it, then try to put a message again.

If put operations are inhibited for a queue on which you are attempting to put messages (or any queue to which the queue name resolves), the MQPUT or MQPUT1 call fails and returns the MQRC_PUT_INHIBITED reason code. You might be able to put a message successfully if you attempt the call at a later time, if the design of the application is such that other programs change the attributes of queues regularly.

Furthemore, if the queue that you are trying to put your message on is full, the MQPUT or MQPUT1 call fails and returns MQRC_Q_FULL.

If a dynamic queue (either temporary or permanent) has been deleted, MQPUT calls using a previously-acquired object handle fail and return the MQRC_Q_DELETED reason code. In this situation, it is good practice to close the object handle as it is no longer of any use to you.

In the case of distribution lists, multiple completion codes and reason codes can occur in a single request. These cannot be handled using only the CompCode and Reason output fields on MQOPEN and MQPUT.

When you use distribution lists to put messages to multiple destinations, the Response Records contain the specific CompCode and Reason for each destination. If you receive a completion code of MQCC_FAILED, no message is put on any destination queue successfully. If the completion code is MQCC_WARNING, the message is successfully put on one or more of the destination queues. If you receive a return code of MQRC_MULTIPLE_REASONS, the reason codes are not all the same for every destination. Therefore, it is recommended to use the MQRR structure so that we can determine which queue or queues caused an error and the reasons for each.

 

Parent topic:

Putting messages on a queue

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