CurrentMaxQFileSize (MQLONG)

The current maximum size the queue file can grow to, rounded up to the nearest megabyte, given the current block size in use on a queue.

Table 1. Queue types to which this attribute applies
Local	Model	Alias	Remote	Cluster
X	X

The use of this field is two fold:

If you set MaxQFileSize to the default value for the current block size, CurrentMaxQFileSize shows the actual value that the default value equates to.
If CurrentMaxQFileSize does not match MaxQFileSize, you know the queue must be drained in order to adopt a bigger granularity.

Note: See Modifying IBM® MQ queue files for more information on changing the size of queue files and block size and granularity.

The maximum value of this attribute is 99,999,9999 MB and there is no default value. The value is whatever the maximum value currently set is; for a new queue with the default attributes, the value of CurrentMaxQFileSize is 2,088,960 MB.