IBM Support

MA46923 - LIC-OTHER-WAIT STRCAD HANGS DUE TO QFPATMAP BEING DAMAGED,
CAUSED BY BEING UPDATED AT THE SAME TIME AS BEING READ.

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 APAR (Authorized Program Analysis Report)

Abstract

LIC-OTHER-WAIT STRCAD HANGS DUE TO QFPATMAP BEING DAMAGED,
CAUSED BY BEING UPDATED AT THE SAME TIME AS BEING READ.

Error Description

It has been discovered that a STRCAD could encounter a hang    
condition if QFPATMAP had been damaged due to being updated    
while at the same time as being read.                          
This is a rare circumstance and code is being enhanced to avoid
such a situation in the future.                                
                                                               
Work Around: With Cluster Active on all nodes in the cluster    
and all related jobs, admin domain can be in an Inactive        
status. The node where the damaged index resides can be removed
from the admin domain, then admin domain can be started to      
ensure all other nodes get updated and show consistent MREs.    
The problem node can then be added back into the admin domain.  

Problem Summary

****************************************************************
* PROBLEM: (MA46923) Licensed Program = 5770999 for i 7.2 and  *
*                                       i 7.3                  *
*           Usability of a Product's MAJOR Function            *
*            Damage index where manual recovery is needed      *
****************************************************************
* USERS AFFECTED: All IBM i operating system users with Cluster*
*                 Administrative Domain                        *
****************************************************************
* RECOMMENDATION: Apply LIC PTF MF64809 for i 7.2.             *
*                 Apply LIC PTF MF64810 for i 7.3.             *
****************************************************************
It has been discovered that a STRCAD could encounter a hang    
condition if QFPATMAP had been damaged due to being updated    
while at the same time as being read.                          
This is a rare circumstance and code is being enhanced to avoid
such a situation in the future.                                
                                                               
Work Around: With Cluster Active on all nodes in the cluster and
all related jobs, admin domain can be in an Inactive status. The
node where the damaged index resides can be removed from the    
admin domain, then admin domain can be started to ensure all    
other nodes get updated and show consistent MREs. The problem  
node can then be added back into the admin domain.              

Problem Conclusion

Code will be changed to prevent the read from happening at the  
same time as an update.                                        

Temporary Fix

                       *********                                
                       * HIPER *                                
                       *********                                

Comments

Circumvention


PTFs Available

R720 MF64809 PTF Cover Letter   8249
R730 MF64810 PTF Cover Letter   8242

Affected Modules

         
         

Affected Publications

Summary Information

Status............................................ CLOSED PER
HIPER........................................... Yes
Component.................................. 9400DG300
Failing Module.......................... RCHMGR
Reported Release................... R720
Duplicate Of..............................




System i Support

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Document Information

Modified date:
14 October 2018