Specify the maximum number of bytes in a single message queue. Use the following guidelines to help determine the value of this number.
Insufficient storage to load module. GETMAIN failure. Region unavailable, request is too large, initiator address space could be fragmented.If your system does not present you with storage-related messages, you probably are not virtually storage constrained.
Default: 2147483647 bytes
Range: 0 to 2147483647 bytes.
Note: The high end of this range is not obtainable due to storage constraints. The actual maximum range varies due to storage allocation and system usage.
The size is specified in bytes by default. You can select other units of measurement if desired, including kilobytes, megabytes, and gigabytes. When the value is stored on the target system, it is converted to bytes.