OnDemand User Group
Support Forums => z/OS Server => Topic started by: Ed_Arnold on November 06, 2015, 08:54:07 AM
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We've encountered this problem:
PI49958 -
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* USERS AFFECTED: Enterprise COBOL V5.x users compiling and *
* running programs that are compiled with the *
* THREAD compiler option and run under a *
* multi-threaded POSIX(ON) environment, and *
* that contain QSAM or VSAM files OPENed and *
* then CLOSEed repeatedly. *
* *
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* PROBLEM DESCRIPTION: There is a small memory leak in the *
* CLOSE processing of the file. *
* *
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* RECOMMENDATION: Apply provided service. *
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During OPEN of QSAM/VSAM file, a control block is created to
associate the OPENed file with the current thread. If the thread
is cancelled, that information is used to correctly close all
files associated with that thread. During CLOSE processing, the
control block that associate the file CLOSEing and the thread
should be removed. The issue is that removal was not done
correctly.
FIXCAT keyword: COB0501T/K COB0502T/K
The logic of the CLOSE file processing to handle THREAD in
POSIX(ON) is fixed to correctly remove that control block used
to associate the file with the thread. Thus removing the memory
leak.
So you may want to compile exits with COBOL V4 until you have the PTF applied:
http://www-01.ibm.com/support/docview.wss?uid=swg21883472 (http://www-01.ibm.com/support/docview.wss?uid=swg21883472)
Ed