ESQA exhaustion, POST loop in Vantage.
Article ID: 228356
Updated On:
Products
Issue/Introduction
From an earlier SVC dump captured from a different address space, we can see that VANSSWQE+025E running under the *MASTER* address space appears to be looping issuing POSTs. Each post is obtaining an SRB. At the time of the first SVC dump, there are over half a million of them. Looking at prior syslogs, it looks like this is around when we have automation scripts running.
PTF LU01418 can cause high CPU consumption by the Vantage Console Message Automation feature, which can cause a z/OS system outage.
Environment
Release : 14.0 - 14.1
Component : VANSSWQE at PTF level LU01418, LU03288 for Vantage 14.1.
Cause
The module VANSSWQE is the code of the exit. The problem is that under some circumstances the POST which is the WTO exit issuing to wake up the message automation in Vantage can fail. If the POST fails the WTO exit gets into a loop. As VANSSWQE was identified to be looping by issuing the POST.
Resolution
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