QBUFSZ= parameter for procedures

Use the QBUFSZ= parameter in procedure to specify a 1- to 5-digit number that represents the size in bytes of the message queue buffers (in core buffers) used by the queue manager.

You must specify a size greater than or equal to the length specified by LGMSGSZ= The size must be equal to or less than 30632 bytes, which is the maximum length of the long message record. The size that is specified is rounded up to the nearest multiple of 4. If you specify a value greater than 30632, the size is set to 30632. If you do not specify a value, or if you specify a value less than the length of the long message record, the size is obtained from the record length of the long message record. The DCBs for the message queue data sets are built during IMS system definition processing, even though the data sets are not used.

This parameter is only valid in the shared-queues environment. If shared queues are enabled, the value that is specified in the QBUFSZ= parameter is used to determine the size of the message queue buffers.