WTC thread hang during connection establishing (Doc ID 2118007.1)

Last updated on AUGUST 15, 2017

Applies to:

Oracle WebLogic Server - Version 10.3.3 and later
Information in this document applies to any platform.

Symptoms

 When network problem or GWTDOMAIN hang, WebLogic Tuxedo Connector (also known as WTC) connection is waiting for establishment at this time.
(other tpcall and WTC configuration of WLS console also hang).

Trying to connect to Tuxedo:

"[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'" id=15 idx=0x44 tid=20980 prio=5 alive, in native, daemon
at
jrockit/net/SocketNativeIO.readBytesPinned(Ljava/io/FileDescriptor;[BIII)I(Native Method)
at jrockit/net/SocketNativeIO.socketRead(SocketNativeIO.java:32)
at
java/net/SocketInputStream.socketRead0(Ljava/io/FileDescriptor;[BIII)I(SocketInputStream.java)
at java/net/SocketInputStream.read(SocketInputStream.java:129)
at weblogic/wtc/jatmi/TpeIn.readTuxedoMessage(TpeIn.java:287)
at weblogic/wtc/jatmi/TpeIn.read(TpeIn.java:455)
at java/io/DataInputStream.readInt(DataInputStream.java:370)
at weblogic/wtc/jatmi/tfmh.read_dom_65_tfmh(tfmh.java:1906)
at weblogic/wtc/jatmi/dsession.do_connect(dsession.java:2038)
at weblogic/wtc/jatmi/dsession.tpinit(dsession.java:2766)
^-- Holding lock: weblogic/wtc/gwt/gwdsession@0xe08d1220[biased lock]
at
weblogic/wtc/gwt/TDMRemoteTDomain.getTsession(TDMRemoteTDomain.java:759)
at
weblogic/wtc/gwt/WlsRouteService.selectTargetRoutes(WlsRouteService.java:92)
at
com/bea/core/jatmi/internal/TCRouteManager.selectTargetRoutes(TCRouteManager.java:72)
at
weblogic/wtc/gwt/TuxedoConnection.getProviderRoute(TuxedoConnection.java:198)
at weblogic/wtc/gwt/TuxedoConnection.tpcall(TuxedoConnection.java:1199)

Another tpcall thread:

"[ACTIVE] ExecuteThread: '3' for queue: 'weblogic.kernel.Default (self-tuning)'" id=40 idx=0x94 tid=21010 prio=5 alive, waiting,
native_blocked, daemon
-- Waiting for notification on:
weblogic/wtc/gwt/TDMRemoteTDomain$TimedMutex@0xf57d3db8[fat lock]
at jrockit/vm/Threads.waitForNotifySignal(JLjava/lang/Object;)Z(Native
Method)
at java/lang/Object.wait(J)V(Native Method)
at
weblogic/wtc/gwt/TDMRemoteTDomain$TimedMutex.acquire(TDMRemoteTDomain.java:184
6)
^-- Lock released while waiting:
weblogic/wtc/gwt/TDMRemoteTDomain$TimedMutex@0xf57d3db8[fat lock]
at
weblogic/wtc/gwt/TDMRemoteTDomain.getTsession(TDMRemoteTDomain.java:492)
^-- Holding lock: weblogic/wtc/gwt/TDMRemoteTDomain@0xf57d36c0[fat lock]
at
weblogic/wtc/gwt/WlsRouteService.selectTargetRoutes(WlsRouteService.java:92)
at
com/bea/core/jatmi/internal/TCRouteManager.selectTargetRoutes(TCRouteManager.java:72)
at
weblogic/wtc/gwt/TuxedoConnection.getProviderRoute(TuxedoConnection.java:198)
at weblogic/wtc/gwt/TuxedoConnection.tpcall(TuxedoConnection.java:1199)

WTC Console

"[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'" id=42 idx=0x98 tid=21011 prio=5 alive, blocked,
native_blocked, daemon
-- Blocked trying to get lock:
weblogic/wtc/gwt/TDMRemoteTDomain@0xf57d36c0[fat lock]
at jrockit/vm/Threads.waitForUnblockSignal()V(Native Method)
at jrockit/vm/Locks.fatLockBlockOrSpin(Locks.java:1411)
at jrockit/vm/Locks.lockFat(Locks.java:1512)
at jrockit/vm/Locks.monitorEnterSecondStageHard(Locks.java:1054)
at jrockit/vm/Locks.monitorEnterSecondStage(Locks.java:1005)
at jrockit/vm/Locks.monitorEnter(Locks.java:2179)
at
weblogic/wtc/gwt/TDMRemoteTDomain.getTsession(TDMRemoteTDomain.java:488)
at
weblogic/wtc/gwt/WTCService.listConnectionsConfigured(WTCService.java:5660)
^-- Holding lock: weblogic/wtc/gwt/WTCService@0xf57d2e30[thin lock]
at jrockit/vm/RNI.c2java(JJJJJ)V(Native Method)
at
jrockit/vm/Reflect.invokeMethod(Ljava/lang/Object;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(Native Method)
at
sun/reflect/NativeMethodAccessorImpl.invoke0(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(Native Method)
at
sun/reflect/NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun/reflect/DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

 

 

Changes

 

Cause

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