Insufficient DASD space to complete off-load processing

Symptoms

While off-loading the active log data sets to DASD, the process terminates unexpectedly. WebSphere MQ issues the following message:

CSQJ128E +CSQ1 LOG OFF-LOAD TASK FAILED FOR ACTIVE LOG nnnnn

The error is preceded by z/OS messages IEC030I, IEC031I, or IEC032I.

System action

WebSphere MQ de-allocates the data set on which the error occurred. If WebSphere MQ is running in dual archive mode, WebSphere MQ changes to single archive mode and continues the off-load. If the off-load cannot be completed in single archive mode, the active log data sets cannot be off-loaded, and the state of the active log data sets remains NOT REUSABLE. Another attempt to off-load the RBA range of the abandoned active log data sets is made the next time the off-load process is triggered.

System programmer action

Quiesce the queue manager (using the WebSphere MQ command STOP QMGR MODE(QUIESCE)) to restrict logging activity until the z/OS abend is resolved.

The most likely causes of these symptoms are:

• The size of the archive log data set is too small to contain the data from the active log data sets during off-load processing. All the secondary space allocations have been used. This condition is normally accompanied by z/OS message IEC030I.

  To solve the problem, either increase the primary or secondary allocations (or both) for the archive log data set (in the CSQ6ARVP system parameters), or reduce the size of the active log data set. If the data to be off-loaded is particularly large, we can mount another online storage volume or make one available to WebSphere MQ.

• All available space on the DASD volumes to which the archive data set is being written has been exhausted. This condition is normally accompanied by z/OS message IEC032I.

  To solve the problem, make more space available on the DASD volumes, or make another online storage volume available for WebSphere MQ.

• The primary space allocation for the archive log data set (as specified in the CSQ6ARVP system parameters) is too large to allocate to any available online DASD device. This condition is normally accompanied by z/OS message IEC032I.

  To solve the problem, make more space available on the DASD volumes, or make another online storage volume available for WebSphere MQ. If this is not possible, adjust the value of PRIQTY in the CSQ6ARVP system parameters to reduce the primary allocation. (For details, see the WebSphere MQ for z/OS System Setup Guide.)

  Note:

  If you reduce the primary allocation, you might have to increase the size of the secondary space allocation to avoid future abends.

Operator action

None.