Specifies how the command is executed when the queue manager is a member of a queue-sharing group. You can specify one of the following:
The maximum length is MQ_QSG_NAME_LENGTH.
Specifies the length of time, in minutes, that an allocated archive read tape unit is allowed to remain unused before it is deallocated. This parameter, together with the MaxReadTapeUnits parameter, allows WebSphere MQ to optimize archive log reading from tape devices. You are recommended to specify the maximum possible values, within system constraints, for both parameters, in order to achieve the optimum performance for reading archive tapes.
Specify a value in the range zero and 1440. Zero means that a tape unit is deallocated immediately. If you specify a value of 1440, the tape unit is never deallocated.
When this value is exceeded, recording recommences at the start of the BSDS.
Specify a value in the range 10 through 100.
This parameter, together with the DeallocateInterval parameter, allows WebSphere MQ to optimize archive log reading from tape devices.
Specify a value in the range 1 through 99.
If you specify a value that is greater than the current specification, the maximum number of tape units allowable for reading archive logs increases. If you specify a value that is less than the current specification, tape units that are not being used are immediately deallocated to adjust to the new value. Active, or premounted, tapes remain allocated.
Specify the number of buffers in the range 1 through 256.
The larger the number of buffers, the less often the write takes place, and this improves the performance of WebSphere MQ. The buffers might be written before this number is reached if significant events, such as a commit point, occur.
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