Fixes are available
APAR status
Closed as program error.
Error description
When using WebSphere Portal on WAS 7 in a high load situation, threads start hanging in java.util.HashMap.findNonNullKeyEntry(). The javacore shows at least one thread with the following stack: at java/util/HashMap.findNonNullKeyEntry(HashMap.java:521(Compiled Code)) at java/util/HashMap.getEntry(HashMap.java(Compiled Code)) at java/util/HashMap.get(HashMap.java(Compiled Code)) at com/ibm/wps/model/te/BidiModelMap.get(BidiModelMap.java:134(Comp led Code)) at com/ibm/wps/model/te/DynamicAssemblyTreeModelWrapper.findModelFo Node(DynamicAssemblyTreeModelWrapper.java:492(Compiled Code)) at com/ibm/wps/model/te/SearchableDynamicAssemblyTreeModelWrapper.f ndByID(SearchableDynamicAssemblyTreeModelWrapper.java:127(Compil d Code)) at com/ibm/wps/model/impl/LocatorMapper$ContentModelLocatorImpl.fin ByID(LocatorMapper.java:388(Compiled Code))
Local fix
Using synchronized collection Note: This interim fix supersedes PK97359.
Problem summary
When using WebSphere Portal on WAS 7 in a high load situation, threads start hanging in java.util.HashMap.findNonNullKeyEntry(). The javacore shows at least one thread with the following stack: at java/util/HashMap.findNonNullKeyEntry(HashMap.java:521(CompiledC ode)) at java/util/HashMap.getEntry(HashMap.java(Compiled Code)) at java/util/HashMap.get(HashMap.java(Compiled Code)) at com/ibm/wps/model/te/BidiModelMap.get(BidiModelMap.java:134(Comp iled Code)) at com/ibm/wps/model/te/DynamicAssemblyTreeModelWrapper.findModelFo rNode(DynamicAssemblyTreeModelWrapper.java:492(Compiled Code)) at com/ibm/wps/model/te/SearchableDynamicAssemblyTreeModelWrapper.f indByID(SearchableDynamicAssemblyTreeModelWrapper.java:127(Compi led Code)) at com/ibm/wps/model/impl/LocatorMapper$ContentModelLocatorImpl.fin dByID(LocatorMapper.java:388(Compiled Code))
Problem conclusion
This interim fix introduces a synchronized collection in the problematic code area. Manual Steps: None Failing Module(s): Engine: Page Assembly Affected Users: All users when Portal is under high load Version Information: Portal Version(s): 6.1.0.1 Pre-Requisite(s): PK97359 Co-Requisite(s): --- Portal Version(s): 6.1.0.2 Pre-Requisite(s): PK97359 Co-Requisite(s): --- Platform Specific: This fix applies to all platforms. A fix is available from Fix Central: http://www.ibm.com/eserver/support/fixes/fixcentral/swgquickorde r?apar=PK99875&productid=WebSphere%20Portal&brandid=5 You may need to type or paste the complete address into your Web browser.
Temporary fix
Comments
APAR Information
APAR number
PK99875
Reported component name
WEBSPHERE PORTA
Reported component ID
5724E7600
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2009-10-29
Closed date
2009-11-10
Last modified date
2009-11-10
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
WEBSPHERE PORTA
Fixed component ID
5724E7600
Applicable component levels
R61A PSY
UP
R61B PSY
UP
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSHRKX","label":"WebSphere Portal"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"6.1","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
10 November 2009