ECMF notification to TSO users does not work
Article ID: 278725
Updated On:
Products
MIM Data Sharing (MII)
MIM Resource Sharing (MIM)
Issue/Introduction
Running MIM (MII) in a 2 LPAR plex with QNAME SYSDSN ECMF=YES defined, however it is noticed that TSO notification is not working.
For example:
- when trying to access the same member or sequential dataset by 2 different users in the same MIM complex
- where USER1 is holding the resource and USER2 is requesting it
- USER1 is not notified that USER2 is requesting it
Environment
Release 12.5
z16
z/OS 2.5
COMMUNICATIONS=(CTCD,INI=CTC)
PROCESS =SELECT
The MIMQNAME member contained many entries, particularly the following...
SPFDSN /* SPF edit/utilities QNAME
SPFEDIT EXEMPT=YES /* ISPF edit & profile dataset protection
SYSDSN ECMF=YES /* Disposition-based dataset allocation
Cause
As documented, ECMF=NO is the default if not specified on the QNAME definition.
QNAME SPFEDIT is only defined with EXEMPT=YES. Because the default for ECMF is NO, ECMF will NOT report any conflicts.
Resolution
Add ECMF=YES to the QNAME SPFEDIT entry in the MIMQNAME member. This will take effect when MIM is recycled.
To avoid the need to recycle MIM, issue the following command to dynamically alter the current definition. This command is LOCAL in scope, so it will need to be issued on all systems.
F MIMGR,ALTER QNAME=SPFEDIT ECMF=YES
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