ENF listen exits - reentrant?

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Article ID: 38187

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Products

CA Compress Data Compression for MVS CA Compress Data Compression for Fujitsu CA Workload Automation CA 7 Edition CA-7 JOB MGMT CA 7 Workload Automation CA OPS/MVS Event Management & Automation

Issue/Introduction

Question:

When reviewing the holds for z/OS 2.1 RSU1509, ran across this one for JES2 that I think might possibly be more applicable to ENF: 

 

++ HOLD(UA77919) SYS FMID(HJE7790) REASON(ACTION) DATE(15177) 
COMMENT 
(***************************************************************
* FUNCTION AFFECTED: JES2 (OA47827)                                                      *
****************************************************************
* DESCRIPTION : Installation notes                                                               *
****************************************************************
* TIMING : Pre-APPLY                                                                                  *
**************************************************************** 
 
ENF listen exits for ENF signals 58, 70, and 78 must 
be reentrant. This is not a new requirement, but 
ignoring the requirement did not cause a problem in 
the past because the signals were presented to the 
listen exits serially. 
 
This APAR will change that behavior: As the listen 
exits will now be invoked in parallel, these ENF 
listen exits DEFINITELY MUST BE CODED TO BE REENTRANT 
to function correctly.). 

 

The ENF signals described are JES2 event signals, but they’re used for some other products’ “listeners”. So I’d be wondering about CA7, OPS/MVS or maybe the Common Services tasks that have functionality that wants to check on job statuses?

 

Answer:

In regards to CA-7 there are currently no anticipated or known concerns. None of its' listeners rely on signals created by IBM’s ENF.

In regards to CA-OPS/MVS there are currently no anticipated or known concerns. CA-OPS/MVS does not use/have any ENF-JES event exit listeners.

In regards to CA Common Services there are no anticipated or known concerns. The CA-ENF SUB=MSTR code uses SIGNAL 40 and all code is reentrant.

Environment

Release: PVLA2.00200-11.7-OPS/MVS-Event Management & Automation-for JES2
Component: