UDB CLOSE causes Region to abend with S0C4

Document ID : KB000092972
Last Modified Date : 25/04/2018
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Introduction:
When you upgrade to z/OS 2.3 it may happen that NCLs using VSAM files can cause the region to abend with a S0C4 Abend.
Environment:
z/OS 2.3
 
Instructions:
This problem appears only if the file used is opened in RLS (Record Level Sharing) mode. IBM is currently creating a correction for IBM solution OA54317 to resolve this problem.
Additional Information:
Here is the link to OA54317: http://www-01.ibm.com/support/docview.wss?uid=isg1OA54317