APAR status
Closed as program error.
Error description
When stopping the application server a java.util.ConcurrentModificationException may occur. Below is a representative callstack: WSVR0102E: com.ibm.ws.runtime.component.TxRecoveryServiceImpl@802feaa8 java.util.ConcurrentModificationException at java.util.HashMap$AbstractMapIterator.checkConcurrentMod(HashMap .java:198) at java.util.HashMap$AbstractMapIterator.makeNext(HashMap.java:203) at java.util.HashMap$ValueIterator.next(HashMap.java:288) at com.ibm.ws.runtime.component.TxServiceImpl.serverStopping(TxServ iceImpl.java:1174) at com.ibm.ws.runtime.component.TxRecoveryServiceImpl.stop(TxRecove ryServiceImpl.java:79) ... at com.ibm.ws.runtime.component.ApplicationServerImpl.stop(Applicat ionServerImpl.java:286)
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application * * Server * **************************************************************** * PROBLEM DESCRIPTION: java.util.ConcurrentModificationExcepti * * on may occur during server shutdown if * * transactional high availability is * * enabled. * **************************************************************** * RECOMMENDATION: * **************************************************************** If transactional High Availability is enabled for peer recovery then when an application server is stopping the following error may occur. ContainerHelp E WSVR0102E: An error occurred stopping, com.ibm.ws.runtime.component.TxRecoveryServiceImpl@802feaa8 java.util.ConcurrentModificationException at java.util.HashMap$AbstractMapIterator.checkConcurrentMod(HashMap .java:198 at java.util.HashMap$AbstractMapIterator.makeNext(HashMap.java:203) at java.util.HashMap$ValueIterator.next(HashMap.java:288) at com.ibm.ws.runtime.component.TxServiceImpl.serverStopping(TxServ iceImpl.java:1174) at com.ibm.ws.runtime.component.TxRecoveryServiceImpl.stop(TxRecove ryServiceImpl.java:79) at com.ibm.ws.runtime.component.ContainerHelper.stopComponent(Conta inerHelper.java:477) at com.ibm.ws.runtime.component.ContainerHelper.stopComponents(Cont ainerHelper.java:461) at com.ibm.ws.runtime.component.ContainerImpl.stopComponents(Contai nerImpl.java:650) at com.ibm.ws.runtime.component.ContainerImpl.stop(ContainerImpl.ja va:638) at com.ibm.ws.runtime.component.ApplicationServerImpl.stop(Applicat ionServerImpl.java:286) ...
Problem conclusion
The transaction service component tracks the set of servers for which it hosts the transaction service logs. This set may be modifed concurrently when transactional high availability is enabled. The transaction service component has been modified so that the concurrent access of the set is handled correctly during application server shutdown. The fix for this APAR is targeted for inclusion in fix packs 8.5.5.19 and 9.0.5.6. For more information, see 'Recommended Updates for WebSphere Application Server': https://www.ibm.com/support/pages/node/715553
Temporary fix
Comments
APAR Information
APAR number
PH23968
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
850
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-04-01
Closed date
2020-10-12
Last modified date
2020-10-12
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
WEBS APP SERV N
Fixed component ID
5724H8800
Applicable component levels
R850 PSY
UP
R900 PSY
UP
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.5","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
01 November 2021