Re: Unexpected JVM crash, assistance requested

Hi Steve

Thanks for your reply.

Java is started via a CLP, this is the section that calls it:

JAVA       +
            CLASS('com.internationalpresence.impscloudg+
            ateway.CloudQ') PARM(&DRIVER &INTERNET +
            &PRODLIB &CLDFLR &TYPE &ENV &HOSTIP +
            &CLDSSL &LOGTYP) CLASSPATH(*ENVVAR) +
            CHKPATH(*IGNORE) PROP((java.version &JVM) +
            (java.awt.headless true) +
            (os400.awt.native true) +
            (com.ibm.cacheLocalHost true) +
            (java.net.preferIPv4Stack &IP4) +
            (java.net.preferIPv6Addresses &IP6)) +
            OPTION(&OPT) OUTPUT(*PRINT)

The program runs for several hours or days before the JVM crashes. We have
a 2 gb dump file and also a java core text file which shows all the threat
stack traces etc.

All Java call stacks available show threads to either be in a wait state,
or a sleep state, or a socket read or accept state with the exception of
the following:

1)
4XESTACKTRACE                at
com/ibm/misc/SignalDispatcher.waitForSignal(Native Method)
4XESTACKTRACE                at
com/ibm/misc/SignalDispatcher.run(SignalDispatcher.java:73)

2)
4XESTACKTRACE                at
com/ibm/tools/attach/target/IPC.waitSemaphore(Native Method)
4XESTACKTRACE                at
com/ibm/tools/attach/target/CommonDirectory.waitSemaphore(CommonDirectory.java:251)

3)
4XESTACKTRACE                at
com/ibm/lang/management/internal/MemoryNotificationThread.processNotificationLoop(Native
Method)
4XESTACKTRACE                at
com/ibm/lang/management/internal/MemoryNotificationThread.run(MemoryNotificationThread.java:185)

In case it's any use to you I've uploaded the java core text file to

http://www.international-presence.com/software/matt_transfer/javacore.20181104.102029.215708.0002.txt

TLXDRIVER is the user profile that the CL program runs as, which should
belong to *SYSOPR user group and have special authority for *ALLOBJ,
*JOBCTL, *SECADM, *SPLCTL

I will ask the customer to check on authority for QJVACMDSRV *pgm.

Many thanks
Matt




>    1. Re: Unexpected JVM crash, assistance requested
>       (Steve Hinrichs via JAVA400-L)
>
>
> ----------------------------------------------------------------------
>
> message: 1
> date: Tue, 13 Nov 2018 19:09:50 +0000
> from: Steve Hinrichs via JAVA400-L <java400-l-Zwy7GipZuJhWk0Htik3J/[email protected]>
> subject: Re: Unexpected JVM crash, assistance requested
>
> How is the java process started, from RPG, RUNJVA, QSH?
> Is their any call stack or is it failing right away?
> What is the class/method being called?
> What authority does the user have that is running the java process, maybe
> try QSECOFR.
>
> I would check authority and existence of QJAVA/QJVACMDSRV *pgm.
> What is TLXDRIVER?  A user profile?  Searching for TLXDRIVER I find 2
> items related to user profiles.
>
> Steve
>
>
-- 
This is the Java Programming on and around the IBM i (JAVA400-L) mailing list
To post a message email: JAVA400-L-Zwy7GipZuJhWk0Htik3J/[email protected]
To subscribe, unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/java400-l
or email: JAVA400-L-request-Zwy7GipZuJhWk0Htik3J/[email protected]
Before posting, please take a moment to review the archives
at https://archive.midrange.com/java400-l.

Help support midrange.com by shopping at amazon.com with our affiliate
link: https://amazon.midrange.com