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SUBJECT:         APAR  NUMBER: PJ27092  
  
REFERENCE:  AREA:     SYSTEM RESTART & STATE CHANGE  
            SEGMENT:  CTKO40     - RELEASE:  TPF4  (Assembler)  
            SEGMENT:  CTKS40     - RELEASE:  TPF4  (Assembler)  
  
  
Pre-requisite APARs are:  
FOR SEGMENT CTKO40     (Assembler) - REL TPF4  
 PJ21044  PJ23178  PJ24536  PJ25094  
 PJ25089  PJ26188  PJ26686  
 PJ26892  PJ27469  
FOR SEGMENT CTKS40     (Assembler) - REL TPF4  
 PJ14078  PJ15697  PJ16331  PJ17852  
 PJ21791  PJ21701  PJ22434  
 PJ23923  PJ25094  PJ25098  PJ25332  
 PJ25781  PJ26683  PJ26707  
 PJ27023  PJ27192  
To be applied in the order listed for each segment.  

ABSTRACT OF PROBLEM  
___________________  
Errors during restart when MQ DLL is loaded via OLDR  
  

COMMENTS ON PROBLEM  
___________________  
The restart ECB runs part of MQ restart processing prior to ELDR  
restart  processing  and  the remaining MQ processing after ELDR  
restart is completed.  This causes a problem if a new version of  
the MQ DLL is loaded via the E-type loader  (OLDR)  because  the  
base version of the DLL is initialized prior to ELDR restart and  
the  new version is used afterwards.  The static data associated  
with the base version of the DLL is not released but  is  reused  
with  the  new version.  Depending on the type of changes intro-  
duced errors can occur.  
  

SOLUTION  
________  
After ELDR restart completes a new ECB is  created  to  complete  
TPF  restart  processing.  This forces a new C environment to be  
created for the remaining restart programs to eliminate any data  
or interface problems created by  using  new  program  versions,  
which were loaded via OLDR.  
  
DEPENDENCIES  
____________  
  
Related Segments Affected By This APAR.  
_______________________________________  
  
None.  
Segments to be assembled or compiled:  
  
Segments to be link edited:  
  
Load Modules to be loaded:  
  
Migration Considerations  
========================  
      CTKS and CTKO need to be loaded via TLDR  
      or the OLDR loadset needs to be accepted prior to re-IPLing  
      the system.  
  
  
-- END APAR PJ27092 
       



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