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SI46398 - OSP-INCORROUT Problems with QINACTITV enforcement

PTF Cover Letter


PTF ( Program Temporary Fixes ) Cover letter


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Abstract

OSP-INCORROUT Problems with QINACTITV enforcement


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED      PTF/FIX  LEVEL

TYPE PROGRAM  REL  NUMBER   MIN/MAX  OPTION
---- -------- ---  -------  -------  ------
PRE  5770SS1  710  SI42759   00/00    0000
DIST 5770SS1  710  SI46397   00/00    0000



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-------
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APAR Error Description / Circumvention

-------------------------------------------------
The way the system handles the QINACTITV (Inactive job time-out)
system value allows a job to be inactive for up to twice the
specified value. Also, a large number of jobs can be ended at
once, creating a performance problem.

CORRECTION FOR APAR 'SE50947' :
-------------------------------
The subsystem will check for inactivity more often. If the
QINACTITV system value is less than 15 minutes, the subsystem
will continue to use the value specified by QINACTITV. If the
QINACTITV system value is 15 minutes or more, the subsystem will
check for inactivity every 10 minutes. The subsystem attempts to
minimize the time that a job can be inactive before an action is
taken. The system value QINACTMSGQ determines the action the
system takes.

When the QINACTITV system value is less than 15 minutes, a job
can be inactive for up to twice the specified value. When the
QINACTITV system value is 20 minutes or more and the value can
be evenly divided by 10, a job can be inactive for up to 10
minutes more than the specified time. When the QINACTITV system
value is 15 minutes or more and the value cannot be evenly
divided by 10, a job can be inactive for up to 20 minutes more
than the specified time.

Subsystems that are started at the same time will no longer
check for inactivity at the same time.  Similarly, when the
QINACTITV system value is changed from *NONE to a number, many
subsystems will begin checking for inactivity, but they will not
all do this checking at the same time. This reduces the number
of jobs that are disconnected or ended at a single time.

If system value QINACTMSGQ is set to the name of a message queue
and the job identified by the CPI1126 message remains inactive
and is not ended or disconnected, another CPI1126 is sent the
next time the subsystem checks for inactivity. This behavior is
unchanged, but the subsystem may be checking for inactivity more
often.  This could affect the logic of whatever program is
handling messages sent to that message queue.

CIRCUMVENTION FOR APAR 'SE50947' :
----------------------------------
None.


Activation Instructions


None.




Special Instructions

None.


Default Instructions

THIS IS A DELAYED PTF TO BE APPLIED AT IPL TIME.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   SI39589      OSP-OTHER-T/QWTMMPJR-MSGMCH1210 PRESTART JOB ERRORS
   SI45884      OSP - Work management internal component update
   SI43275      OSP-OTHER CHGACGCDE FAILS WITH MSGCPF180B
   SI43133      OSP-DB-OTHER-THREADS-UNPRED TEMPORARY STORAGE INCREASE DUE T
   SI42845      OSP-OTHER-UNPRED Job at limit should be held not ended.
   SI41333      OSP-OTHER-T/QWTMCRTG-MSGMCH3601 LOGGED IN QCMN JOBLOG DURING
   SI40568      OSP-OTHER-PERFM Error case runs too fast creating new jobs
   SI39786      OSP-INCORROUT Base Function to Enable Future Extensions

Summary Information

System..............................i
Models..............................
Release.............................V7R1M0
Licensed Program...............5770SS1
APAR Fixed..........................View details for APAR SE50947
Superseded by:......................View fix details for PTF SI66949
Recompile...........................N
Library.............................QSYS
MRI Feature ........................NONE
Cum Level...........................C2279710


System i Support

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Document Information

Modified date:
04 April 2012