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PK64992: DEADLOCK WHEN ROLLING OVER LOG FILES

Fixes are available

Java SDK 1.5 SR8 Cumulative Fix for WebSphere Application Server
Java SDK 1.5 SR8 Cumulative Fix for WebSphere Application Server
Java SDK 1.5 SR10 Cumulative Fix for WebSphere Application Server
6.1.0.31: Java SDK 1.5 SR11 FP1 Cumulative Fix for WebSphere Application Server
6.1.0.33: Java SDK 1.5 SR12 FP1 Cumulative Fix for WebSphere
6.1.0.29: Java SDK 1.5 SR11 Cumulative Fix for WebSphere Application Server
6.1.0.35: Java SDK 1.5 SR12 FP2 Cumulative Fix for WebSphere
6.1.0.37: Java SDK 1.5 SR12 FP3 Cumulative Fix for WebSphere
6.1.0.39: Java SDK 1.5 SR12 FP4 Cumulative Fix for WebSphere Application Server
6.1.0.41: Java SDK 1.5 SR12 FP5 Cumulative Fix for WebSphere Application Server
6.1.0.43: Java SDK 1.5 SR13 Cumulative Fix for WebSphere Application Server
6.1.0.45: Java SDK 1.5 SR14 Cumulative Fix for WebSphere Application Server
6.1.0.47: WebSphere Application Server V6.1 Fix Pack 47
6.1.0.47: Java SDK 1.5 SR16 Cumulative Fix for WebSphere Application Server

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • If logging has been configured to roll over at a given size
a deadlock can occur if the right conditions are met (cpu speed,
server load, etc).

For example, a trace is being gathered and logging has been
configured to roll over at 50mb.  This problem can occur when
the trace.log file has hit 50mb and tries to create a new
trace.log.
.
   The deadlock that occurs when this problem happens is this
There is a deadlock detected:
     2LKDEADLOCKTHR  Thread "Non-Deferred Alarm Manager"
(0x45F09B00)
3LKDEADLOCKWTR    is waiting for:
4LKDEADLOCKMON      sys_mon_t:0x456FF168 infl_mon_t: 0x456FF1A8:
4LKDEADLOCKOBJ
com/ibm/ejs/ras/SystemOutStream@013A9918/013A9924:
3LKDEADLOCKOWN    which is owned by:
2LKDEADLOCKTHR  Thread "MessageListenerThreadPool : 3"
(0x4A182100)
3LKDEADLOCKWTR    which is waiting for:
4LKDEADLOCKMON      sys_mon_t:0x47443DB8 infl_mon_t: 0x47443DF8:
4LKDEADLOCKOBJ      com/ibm/ejs/ras/Tr@45AF13F8/45AF1404:
3LKDEADLOCKOWN    which is owned by:
2LKDEADLOCKTHR  Thread "Non-Deferred Alarm Manager" (0x45F09B00)
NULL
.---------------------------------------------------------------
.
Thread 45F09B00
       at java/lang/Thread.run(Thread.java:810)
3XMTHREADINFO      "Non-Deferred Alarm Manager" (TID:0x45F09B00,
sys_thread_t:0x4569EA80, state:B, native ID:0x000012B4) prio=5
4XESTACKTRACE          at
com/ibm/ejs/ras/SystemOutStream.logMessage(SystemOutStream.java:
286(Compiled Code))
4XESTACKTRACE          at
com/ibm/ejs/ras/SystemOutStream.processEvent(SystemOutStream.jav
a:264(Compiled Code))
4XESTACKTRACE          at
com/ibm/ws/logging/WsHandlerWrapper.publish(WsHandlerWrapper.jav
a:43(Compiled Code))
4XESTACKTRACE          at
java/util/logging/Logger.log(Logger.java:469(Compiled Code))
4XESTACKTRACE          at
com/ibm/ejs/ras/Tr.logToJSR47Logger(Tr.java:1612(Compiled Code))
4XESTACKTRACE          at
com/ibm/ejs/ras/Tr.fireEvent(Tr.java:1540(Compiled Code))
4XESTACKTRACE          at
com/ibm/ejs/ras/Tr.logJrasEvent(Tr.java:1187)
4XESTACKTRACE          at
com/ibm/ejs/ras/Tr.dispatchInternalEvents(Tr.java:1328)
4XESTACKTRACE          at
com/ibm/ejs/ras/Tr.entry(Tr.java:772(Compiled Code))
4XESTACKTRACE          at
com/ibm/ejs/util/am/AlarmThreadPool.fireAlarm(AlarmThreadPool.ja
va:74(Compiled Code))
4XESTACKTRACE          at
com/ibm/ejs/util/am/AlarmManagerThread.run(AlarmManagerThread.ja
va:122)
4XESTACKTRACE          at java/lang/Thread.run(Thread.java:810)
.--------------------------------------------------------------
Thread  4182100:

 "MessageListenerThreadPool : 3" (TID:0x4A182100,
sys_thread_t:0x474209F0, state:B, native ID:0x000014E8) prio=5
4XESTACKTRACE          at
com/ibm/ejs/ras/WrappingFileOutputStream.switchFiles(WrappingFil
eOutputStream.java:565)
4XESTACKTRACE          at
com/ibm/ejs/ras/WrappingFileOutputStream.switchFiles(WrappingFil
eOutputStream.java:508(Compiled Code))
4XESTACKTRACE          at
com/ibm/ejs/ras/WrappingFileOutputStream.incrementCount(Wrapping
FileOutputStream.java:461(Compiled Code))
4XESTACKTRACE          at
com/ibm/ejs/ras/WrappingFileOutputStream.write(WrappingFileOutpu
tStream.java:363(Compiled Code))
4XESTACKTRACE          at
java/io/PrintStream.write(PrintStream.java:446(Compiled Code))
4XESTACKTRACE          at
sun/nio/cs/StreamEncoder$ConverterSE.implWrite(StreamEncoder.jav
a:284(Compiled Code))
4XESTACKTRACE          at
sun/nio/cs/StreamEncoder.write(StreamEncoder.java:194(Compiled
Code))
4XESTACKTRACE          at
java/io/OutputStreamWriter.write(OutputStreamWriter.java:214(Com
piled Code))
4XESTACKTRACE          at
java/io/BufferedWriter.flushBuffer(BufferedWriter.java:132(Compi
led Code))
4XESTACKTRACE          at
java/io/BufferedWriter.write(BufferedWriter.java:233(Compiled
Code))
4XESTACKTRACE          at
java/io/Writer.write(Writer.java:147(Compiled Code))
4XESTACKTRACE          at
java/io/PrintStream.write(PrintStream.java:491(Compiled Code))
4XESTACKTRACE          at
java/io/PrintStream.print(PrintStream.java:636(Compiled Code))
4XESTACKTRACE          at
java/io/PrintStream.println(PrintStream.java:773(Compiled Code))
4XESTACKTRACE          at
com/ibm/ejs/ras/SystemStream.writeWebSphereEvent(SystemStream.ja
va:737(Compiled Code))
4XESTACKTRACE          at
com/ibm/ejs/ras/SystemOutStream.logMessage(SystemOutStream.java:
286(Compiled Code))
4XESTACKTRACE          at
com/ibm/ejs/ras/SystemOutStream.processEvent(SystemOutStream.jav
a:267(Compiled Code))
4XESTACKTRACE          at
com/ibm/ws/logging/WsHandlerWrapper.publish(WsHandlerWrapper.jav
a:43(Compiled Code))
4XESTACKTRACE          at
java/util/logging/Logger.log(Logger.java:469(Compiled Code))
4XESTACKTRACE          at
com/ibm/ws/logging/WsLogger.deliverOrBuffer(WsLogger.java:244(Co
mpiled Code))
4XESTACKTRACE          at
com/ibm/ws/logging/WsLogger.log(WsLogger.java:221(Compiled
Code))
4XESTACKTRACE          at
com/ibm/ws/logging/WsLogger.logp(WsLogger.java:391(Compiled
Code))

Local fix

  • N/A

Problem summary

  • ****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server V6.0.2 and V6.1                      *
****************************************************************
* PROBLEM DESCRIPTION: During log file rotation, a deadlock    *
*                      may occur.                              *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
If logging has been configured to roll over at a given size
a deadlock can occur if the right conditions are met (for
example, CPU speed,server load, and so on).

For example, a trace is being gathered and logging has been
configured to roll over at 50mb.  This problem can occur when
the trace.log file has hit 50mb and tries to create a
newtrace.log.

Problem conclusion

  • Though this issue rarely presents itself, a lock has been
added to the code to prevent this from happening.

The fix for this APAR is currently targeted for inclusion in
fixpacks 6.0.2.31 and 6.1.0.19.  Please refer to the
Recommended Updates page for delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    PK64992
    • 

  • Reported component name
    WEBSPH APP SERV
    • 

  • Reported component ID
    5724J0800
    • 

  • Reported release
    61S
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2008-04-24
    • 

  • Closed date
    2008-06-10
    • 

  • Last modified date
    2009-11-16
    • 





    

  • 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
    WEBSPH APP SERV
    • 

  • Fixed component ID
    5724J0800
    • 



Applicable component levels


    

  • R60S  PSY
       UP
    • 

  • R61S  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":"6.1","Line of Business":{"code":"LOB45","label":"Automation"}}]
              

                                                                    

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            29 December 2021
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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