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MA43766 - LIC-DB-OTHER-PERFM SLOW PARTITION DUE TO CONCURRENT IDENTICAL
OPTIMIZATIONS

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 APAR (Authorized Program Analysis Report)

Abstract

LIC-DB-OTHER-PERFM SLOW PARTITION DUE TO CONCURRENT IDENTICAL
OPTIMIZATIONS

Error Description

Many concurrent identical optimizations compete for resources  
which caused significant system performance problems.          

Problem Summary

Many concurrent identical optimizations compete for resources  
which caused significant system performance problems.          

Problem Conclusion

The SQE optimizer will recognize when multiple identical        
optimizations are required in the same time frame. When this    
situation is identified, the optimizer will allow a subset of  
optimizations to progress. Once the subset of optimizations    
complete, the remaining optimizations attempt to match a plan  
from the plan cache prior to continuing with the optimization.  

Temporary Fix

Comments

Circumvention


PTFs Available

R710 MF58580 PTF Cover Letter   4283
 R720 MF58821 PTF Cover Letter   5135

Affected Modules

         
         

Affected Publications

Summary Information

Status............................................ CLOSED PER
HIPER........................................... No
Component.................................. 9400DG3DB
Failing Module.......................... RCHMGR
Reported Release................... R710
Duplicate Of..............................




System i Support

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Document Information

Modified date:
30 May 2015

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