How can I create effective OPS/MVS automation to monitor and respond to a potential WTO message flood condition caused by a problem ASID?

Document ID : KB000047663
Last Modified Date : 14/02/2018
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Question:

How can I create effective OPS/MVS automation to monitor and respond to a potential WTO message flood condition caused by a problem ASID? We would like to implement a solution to catch these situations before they get to the point where the WTO message queue is almost full. We would like a solution that could potentially be universal for any started task.

Answer:

We recommend utilizing the OPS/MVS parms MSGTHRESHOLD/MSGDRAINRATE to identify possible 'problem' jobs specifically, if some ASID is spitting out a lot of message traffic. Have a look at the sample rule OPS4402O in hlq.CCLXRULS for ideas of a rule to fire on these conditions. This sample simply generates an alert, but more robust logic (creating dynamic MSG rule to suppress/delete future message traffic from ASID) can be added.

Additional Information:

Address Space Message Rate Control.

Available Sample Rules