Fixes are available
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for AIX
7.0.0.15: Java SDK 1.6 SR9 Cumulative Fix for WebSphere Application Server
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for HP-UX
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for IBM i
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Linux
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Solaris
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Windows
6.1.0.37: Java SDK 1.5 SR12 FP3 Cumulative Fix for WebSphere
7.0.0.17: WebSphere Application Server V7.0 Fix Pack 17
7.0.0.17: Java SDK 1.6 SR9 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.19: WebSphere Application Server V7.0 Fix Pack 19
7.0.0.21: WebSphere Application Server V7.0 Fix Pack 21
7.0.0.23: WebSphere Application Server V7.0 Fix Pack 23
7.0.0.25: WebSphere Application Server V7.0 Fix Pack 25
7.0.0.27: WebSphere Application Server V7.0 Fix Pack 27
7.0.0.29: WebSphere Application Server V7.0 Fix Pack 29
6.1.0.47: WebSphere Application Server V6.1 Fix Pack 47
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
7.0.0.35: WebSphere Application Server V7.0 Fix Pack 35
7.0.0.37: WebSphere Application Server V7.0 Fix Pack 37
7.0.0.39: WebSphere Application Server V7.0 Fix Pack 39
7.0.0.41: WebSphere Application Server V7.0 Fix Pack 41
7.0.0.43: WebSphere Application Server V7.0 Fix Pack 43
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
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
APAR status
Closed as program error.
Error description
When a database is taken down for maintenance while an IBM WebSphere Application Server Service Integration Bus messaging engine is running, the messaging engine loses its lock on the datastore. When the connection to the database is re-established , the messaging engine still fails to acquire lock on the datastore and the following messages are logged repeatedly in the SystemOut.log: CWSIS1546I: The messaging engine, ME_UUID={0}, INC_UUID={1}, has lost an existing lock or failed to gain an initial lock on the data store CWSIS1538I: The messaging engine, ME_UUID={0}, INC_UUID={1}, is attempting to obtain an exclusive lock on the data store.
Local fix
Restart the server hosting the messaging engine
Problem summary
**************************************************************** * USERS AFFECTED: Users of the default messaging provider for * * IBM WebSphere Application Server * **************************************************************** * PROBLEM DESCRIPTION: The lock on the messaging engine * * database table is not reacquired even * * when the lock held by the previous * * instance of the messaging engine has * * been removed. * **************************************************************** * RECOMMENDATION: * **************************************************************** The messaging engine is not able to acquire a lock on the data store, and the following messages are output: CWSIS1546I: The messaging engine, ME_UUID={0}, INC_UUID={1}, has lost an existing lock or failed to gain an initial lock on the data store CWSIS1538I: The messaging engine, ME_UUID={0}, INC_UUID={1}, is attempting to obtain an exclusive lock on the data store. If these messages occur when there is a lock held on the SIBOWNER table of the data store then this is expected, and the database will normally remove the lock after a period of time. If these messages still occur even when the lock no longer exists, then it is likely that the thread attempting to do the locking is not running. This can be verified by taking a javacore of the messaging engine process that is showing the CWSIS1546I message and looking for a thread named: sib.LockThread-<ME_UUID> where <ME_UUID> is the uuid of the messaging engine with the problem. The thread stopped running due to a timing window where the connection to the database was re-established so we could create a connection but was then lost again before we could attempt to get a lock.
Problem conclusion
This APAR makes sure that the locking thread is always running when attempting to acquire the lock on the data store. The fix for this APAR is currently targeted for inclusion in fix pack 7.0.0.15. Please refer to the Recommended Updates page for delivery information: http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
Temporary fix
Restart the messaging engine process.
Comments
APAR Information
APAR number
PM23655
Reported component name
PLAT MSG COM
Reported component ID
620600101
Reported release
200
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2010-10-01
Closed date
2010-11-26
Last modified date
2010-11-26
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
PLAT MSG COM
Fixed component ID
620600101
Applicable component levels
R200 PSY
UP
Document Information
Modified date:
24 October 2021