[Wrapper-user] How to get a thread dump in a JVM freeze incident?

[Balaji k. M. <Ba...@el...>]

Dear All,

	I'm using java service wrapper 3.1.0 in my application which
runs on IBM JRE 1.3.0. When the application freezes, we are tring to get
thread dump using wrapperlistener's "D" command. We couldn't succeed in
getting a thread dump;no response from the wrapper service. We observed
that service was in hung state. Even in case of a freeze incident, how
should I configure the wrapper service to get a thread dump.

I have listed my app configurations as follows:

wrapper.java.command=3DC:/IBM/Java13/jre/bin/java=20
wrapper.java.mainclass=3Dcom.elind.service.fixgateway.common.FixMarketDat=
a
MainProcess
wrapper.max_failed_invocations=3D1=20
wrapper.ping.timeout=3D0
wrapper.java.classpath.1=3DC:/Test/lib/wrapper.jar
wrapper.java.classpath.2=3DC:/Test/lib/FixGateway.jar
wrapper.java.classpath.3=3DC:/Test/lib/jgl3.1.0.jar
wrapper.java.classpath.4=3DC:/Test/lib/xerces.jar
wrapper.java.classpath.5=3DC:/Test/lib/xmlparserv2.jar
wrapper.java.library.path.1=3DC:/Test/lib
wrapper.console.format=3DPM
wrapper.console.loglevel=3DINFO
wrapper.logfile=3D../logs/wrapper.log
wrapper.logfile.format=3DLPTM
wrapper.logfile.loglevel=3DINFO
wrapper.logfile.maxsize=3D0
wrapper.logfile.maxfiles=3D0
wrapper.syslog.loglevel=3DNONE
wrapper.ntservice.name=3DFixTradingPartner
wrapper.ntservice.displayname=3DFixTradingPartner
wrapper.ntservice.description=3DFixTradingPartner
wrapper.ntservice.dependency.1=3D
wrapper.ntservice.starttype=3DAUTO_START
wrapper.ntservice.interactive=3Dfalse
wrapper.ntservice.console=3Dfalse
wrapper.working.dir=3DC:/Test/batch

Awaiting for you valuable suggestions.

Thanks in advance,

Warm Regards,
Balaji K M.