APAR status
Closed as program error.
Error description
The Nutcracker errors are a symptom of a heavily loaded system. These and other errors may occur if a system is pushed to its limits, but the recommendations here will allow users to run more concurrent jobs without errors, than would be possible on an unmodified system. All production systems on Windows should follow the recommendations.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Windows Users of DataStage 8.1 who are running large parallel jobs may see job failures and " Nutcracker" errors in the Windows Application Event logs. This will occur on very heavily loaded systems where CPU usage is above 90% and where memory usage is so high that the system is using virtual memory during job execution. **************************************************************** PROBLEM DESCRIPTION: The Nutcracker errors are a symptom of a heavily loaded system. These and other errors may occur if a system is pushed to its limits, but the recommendations here will allow users to run more concurrent jobs without errors, than would be possible on an unmodified system. All production systems on Windows should follow the recommendations **************************************************************** RECOMMENDATION: Code changes in the Parallel engine which improve high load performance on Windows are included in 8.1 Fix Pack 1. Users should install the Fixpack. The code changes will not be effective unless the user makes certain Windows registry and other configuration changes which are described in the Tech Note: DataStage: Problems running large parallel job on Windows which is available at http://www-01.ibm.com/support/docview.wss?rs=2321&q1=ds81relnote s&uid=swg21318253&loc=en_US&cs=utf-8&lang=en This change is included in 8.1 Fix Pack 1. ****************************************************************
Problem conclusion
The issue that was introduced by another development change was fixed on 81 on all the OS platforms.
Temporary fix
Comments
APAR Information
APAR number
JR31314
Reported component name
WIS DATASTAGE
Reported component ID
5724Q36DS
Reported release
801
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2008-12-03
Closed date
2009-06-08
Last modified date
2010-12-13
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
WIS DATASTAGE
Fixed component ID
5724Q36DS
Applicable component levels
R801 PSN
UP
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Document Information
Modified date:
13 December 2010