Fixes are available
7.0.0.19: WebSphere Application Server V7.0 Fix Pack 19
8.0.0.1: WebSphere Application Server V8.0 Fix Pack 1
7.0.0.21: WebSphere Application Server V7.0 Fix Pack 21
8.0.0.2: WebSphere Application Server V8.0 Fix Pack 2
8.0.0.3: WebSphere Application Server V8.0 Fix Pack 3
7.0.0.23: WebSphere Application Server V7.0 Fix Pack 23
8.0.0.4: WebSphere Application Server V8.0 Fix Pack 4
7.0.0.25: WebSphere Application Server V7.0 Fix Pack 25
8.0.0.5: WebSphere Application Server V8.0 Fix Pack 5
7.0.0.27: WebSphere Application Server V7.0 Fix Pack 27
8.0.0.6: WebSphere Application Server V8.0 Fix Pack 6
7.0.0.29: WebSphere Application Server V7.0 Fix Pack 29
8.0.0.7: WebSphere Application Server V8.0 Fix Pack 7
6.1.0.47: WebSphere Application Server V6.1 Fix Pack 47
8.0.0.8: WebSphere Application Server V8.0 Fix Pack 8
7.0.0.31: WebSphere Application Server V7.0 Fix Pack 31
7.0.0.27: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.33: WebSphere Application Server V7.0 Fix Pack 33
8.0.0.9: WebSphere Application Server V8.0 Fix Pack 9
7.0.0.35: WebSphere Application Server V7.0 Fix Pack 35
8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
7.0.0.37: WebSphere Application Server V7.0 Fix Pack 37
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
7.0.0.39: WebSphere Application Server V7.0 Fix Pack 39
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
7.0.0.41: WebSphere Application Server V7.0 Fix Pack 41
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
7.0.0.43: WebSphere Application Server V7.0 Fix Pack 43
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15
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: Java SDK 1.5 SR16 Cumulative Fix for WebSphere Application Server
7.0.0.19: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.21: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere
7.0.0.23: Java SDK 1.6 SR10 FP1 Cumulative Fix for WebSphere
7.0.0.25: Java SDK 1.6 SR11 Cumulative Fix for WebSphere Application Server
7.0.0.27: Java SDK 1.6 SR12 Cumulative Fix for WebSphere Application Server
7.0.0.29: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.31: Java SDK 1.6 SR15 Cumulative Fix for WebSphere Application Server
7.0.0.35: Java SDK 1.6 SR16 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.37: Java SDK 1.6 SR16 FP3 Cumulative Fix for WebSphere Application Server
7.0.0.39: Java SDK 1.6 SR16 FP7 Cumulative Fix for WebSphere Application Server
7.0.0.41: Java SDK 1.6 SR16 FP20 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server
Obtain the fix for this APAR.
APAR status
Closed as program error.
Error description
When running Websphere Application Server zOS, the com/ibm/ws/asynchbeans/services/wlm/EnclaveManager goes into a deadlock with two threads causing the server to hang and eventually timeout with an EC3/04130007. The external symptoms would be a server hang/timeout with the below. BBOO0327I HTTP REQUEST TIMEOUT: (0301):(FCCD51ED):(0001001D):(009B6088):(STC64556): (2011/01/29 21:45:01.811575):(2011/01/29 21:45:02.046377): (2011/01/29 21:45:02.054852):(RemoteWebContainer):(httprequest): (ipaddr=a.b.b.d port=xxxx):():():(/aaaaa/bbbbb) When extracted the javacore from the EC3 dump we found the below deadlock contention. 1LKDEADLOCK Deadlock detected !!! NULL --------------------- NULL 2LKDEADLOCKTHR Thread "java.lang.ThreadGroup[name=DefaultWorkManager: CWS_LOGON_EAR,maxpri=10]" (0x4EFFCC00) 3LKDEADLOCKWTR is waiting for: 4LKDEADLOCKMON sys_mon_t:0x5113A2AC infl_mon_t: 0x5113A2EC: 4LKDEADLOCKOBJ java/util/HashMap@36548D18/36548D24: 3LKDEADLOCKOWN which is owned by: 2LKDEADLOCKTHR Thread "WebSphere:ORB.thread.pool t=009be9d8" (0x527A0500) 3LKDEADLOCKWTR which is waiting for: 4LKDEADLOCKMON sys_mon_t:0x5113A7FC infl_mon_t: 0x5113A83C: 4LKDEADLOCKOBJ com/ibm/ws/asynchbeans/services/wlm/Enclave@2EAE7F80/2EAE7F8C: 3LKDEADLOCKOWN which is owned by: 2LKDEADLOCKTHR Thread "java.lang.ThreadGroup[name=DefaultWorkManager: CWS_LOGON_EAR,maxpri=10]" (0x4EFFCC00)
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application Server * V6.1.0 * **************************************************************** * PROBLEM DESCRIPTION: Deadlock in AsynchBean classification * * service. * **************************************************************** * RECOMMENDATION: * **************************************************************** There is a circular reference in the EnclaveManager code that could lead to deadlock, when two threads simultaneously work on the single object of this class.
Problem conclusion
The problem is fixed by avoiding circular reference. APAR PM32618 is currently targeted for inclusion in Service Level (Fix Pack) 6.1.0.39 of WebSphere Application Server V6.1. Please refer to URL: //www.ibm.com/support/docview.wss?rs=404&uid=swg27006970 for Fix Pack availability.
Temporary fix
Comments
APAR Information
APAR number
PM32618
Reported component name
WEBSPHERE FOR Z
Reported component ID
5655I3500
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-02-14
Closed date
2011-04-06
Last modified date
2011-08-01
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 FOR Z
Fixed component ID
5655I3500
Applicable component levels
R610 PSY UK69361
UP11/07/16 P F107
Fix is available
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Document Information
Modified date:
27 October 2021