APAR status
Closed as program error.
Error description
The deadlock occurs in the Equinox OSGi layer. It is shipped as part of the LongRunningScheduler.ear, which is a systemApp. Equinox bug for this deadlocking issue: https://bugs.eclipse.org/bugs/show_bug.cgi?id=479396 LongRunningScheduler.ear system application fixed for the aforementioned the deadlock bug.
Local fix
N/A
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application * * Server * * Java Batch * **************************************************************** * PROBLEM DESCRIPTION: A deadlock can occur during startup of * * the LongRunningScheduler system app: * * 3XMTHREADINFO "server.startup : 0" * * J9VMThread:0x00000000321FE100, * * omrthread_t:0x0000010025DE8968, * * java/lang/Thread:0x000000028258D6C8, * * state:B, prio=5 * * 3XMJAVALTHREAD * * (java/lang/Thread getId:0x9A, * * isDaemon:true) * * 3XMTHREADINFO1 (native * * thread ID:0x649014F, native * * priority:0x5, native policy:UNKNOWN, * * vmstate:B, vm thread flags:0x00000281) * * 3XMCPUTIME CPU usage * * total: 2.767175000 secs, user: * * 2.176358000 secs, system: 0.590817000 * * secs, current category="Application" * * 3XMTHREADBLOCK Blocked on: * * org/osgi/util/tracker/ServiceTracker$Tr * * acked@0x0000000281397838 Owned by: * * "server.startup : 1" * * (J9VMThread:0x0000000032200500, * * java/lang/Thread:0x000000028258D770) * * 3XMHEAPALLOC Heap bytes * * allocated since last GC cycle=0 (0x0) * * 3XMTHREADINFO3 Java * * callstack: * * 4XESTACKTRACE at * * org/osgi/util/tracker/ServiceTracker.ge * * tServiceReferences(ServiceTracker.java: * * 555) * * 4XESTACKTRACE at * * org/osgi/util/tracker/ServiceTracker.ge * * tServiceReference(ServiceTracker.java:5 * * 98) * * 4XESTACKTRACE at * * org/osgi/util/tracker/ServiceTracker.ge * * tService(ServiceTracker.java:719) * * ... * * 4XESTACKTRACE at * * org/eclipse/equinox/servletbridge/Frame * * workLauncher.start(FrameworkLauncher.ja * * va:387) * * 5XESTACKTRACE * * (entered lock: * * org/eclipse/equinox/servletbridge/Frame * * workLauncher@0x0000000283ACA018, entry * * count: 1) * * 4XESTACKTRACE at * * org/eclipse/equinox/servletbridge/Bridg * * eServlet.init(BridgeServlet.java:65) * * 4XESTACKTRACE at * * javax/servlet/GenericServlet.init(Gener * * icServlet.java:244) * **************************************************************** * RECOMMENDATION: * **************************************************************** The deadlock occurs in the Equinox OSGi layer. The LongRunningScheduler.ear system app makes use of org.eclipse.equinox.servletbridge and there is an Equinox bug for this deadlocking issue: https://bugs.eclipse.org/bugs/show_bug.cgi?id=479396 If the org.eclipse.equinox.servletbridge prereq level that is packaged with WebSphere can be updated, this fix can be incorporated.
Problem conclusion
The Eclipse servlet bridge prereq level used for this system app was updated to a level which contains the deadlock fix mentioned in the Problem Summary. The fix for this APAR is targeted for inclusion in fix pack 9.0.5.12 and 8.5.5.22. 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
PH43383
Reported component name
WEBSPHERE APP S
Reported component ID
5724J0800
Reported release
900
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2022-01-16
Closed date
2022-03-29
Last modified date
2022-03-29
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 APP S
Fixed component ID
5724J0800
Applicable component levels
[{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"9.0"}]
Document Information
Modified date:
30 March 2022