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This solution handles situations in which an attempt to allocate a device fails. A message sent to the console asks for the operator’s instructions – whether to allocate a different device, cancel the job, or wait until the device becomes available. The WAIT option appears only if MVS determines that it is reasonable to wait for the device.
When the MVS message text indicates that the WAIT option is valid, this solution instructs MVS to WAIT. When MVS then issues a message asking the operator whether to hold, the units already allocated to the waiting job, this solution instructs MVS not to hold the units (that is, replies NOHOLD).
When the MVS message text does not contain the WAIT option, a distinction is made between test and production jobs. If the job that failed to allocate a device is a test job, the rule replies CANCEL. If the job is a production job, no reply is issued, but a message is sent to the operator explaining the situation.
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