PI08137: Deadlock occurred in com.ibm.ws.logging.WsLogConfigurator

Fixes are available

APAR status

Closed as program error.

Error description

Deadlock in between the following threads

com/ibm/ejs/ras/SystemOutStream.processEvent(SystemOutStream.jav
a:319(Co
mpiled Code))
at
com/ibm/ws/logging/WsHandlerWrapper.publish(WsHandlerWrapper.jav
a:43(Com
piled Code))
at java/util/logging/Logger.log(Logger.java:1281(Compiled Code))
at com/ibm/ws/logging/WsLogger.access$001(WsLogger.java:85)


and

java/util/logging/LogManager.initializeGlobalHandlers(LogManager
.java:11
93(Compiled Code))
(entered lock:
com/ibm/ws/bootstrap/WsLogManager@0x0000000042CED870,
entry count: 1)
at
java/util/logging/LogManager.access$900(LogManager.java:135(Comp
iled Code))

Local fix

```
N/A
```

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server                                      *
****************************************************************
* PROBLEM DESCRIPTION: Deadlock  occurred  in                  *
*                      com.ibm.ws.logging.WsLogConfigurator    *
*                      preventing the normal execution of      *
*                      WebSphere Application Server 7.0.0.29   *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
com.ibm.ws.logging.WsLogConfigurator.getExtensionPointLoggingCon
figuration attempt to call a method which is a contender for
the system out stream. it goes in the synchronized block and
creates a never ending circular wait condition leading to the
deadlock. In this specific situation code is unable to get the
eclipse extension registry leading the flow to execute this
code path every time the look up failed.

Problem conclusion

To Prevent the deadlock situation  the logging level has been
lowered from WARNING to FINE which will stop making it a
contender for the system out stream, effectively ending the
circular wait.

The fix for this APAR is currently targeted for inclusion in
fix pack 7.0.0.33, 8.0.0.9 and 8.5.5.3.  Please refer to the
Recommended Updates page for delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Temporary fix

Disable the logger by setting
com.ibm.ws.logging.WsLoggerConfigurator=off in trace
specification.
Switching off this class will disable the code path from being
run, which is leading to the deadlock on WsLogManager
object.

Comments

APAR Information

APAR number
PI08137
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2013-12-17
Closed date
2014-04-29
Last modified date
2016-01-04

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

R700 PSY
UP
R800 PSY
UP
R850 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":"8.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 April 2022

Tips

PI08137: Deadlock occurred in com.ibm.ws.logging.WsLogConfigurator

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

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

Fixed component ID

Applicable component levels

R700 PSY

R800 PSY

R850 PSY

Document Information

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