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From "Kathey Marsden (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4173) java/lang/OutOfMemoryError" "native memory exhausted" received on z/OS for process launched to shutdown network server and launch the replication run in Suites.All
Date Tue, 28 Apr 2009 23:26:30 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4173?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12703874#action_12703874

Kathey Marsden commented on DERBY-4173:

After the machine was restarted (due to an air conditioning failure), this problem no longer
reproduces.  The system programmer says it may be a "storage creep" issue which could be either
an application or OS problem.

I will loop the tests for a while and ask the jvm team to look at the dumps.  If that leads
nowhere, I may need to close this Cannot Reproduce.

> java/lang/OutOfMemoryError" "native memory exhausted" received  on z/OS for process launched
to shutdown network server and launch the replication run in Suites.All
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------
>                 Key: DERBY-4173
>                 URL: https://issues.apache.org/jira/browse/DERBY-4173
>             Project: Derby
>          Issue Type: Bug
>          Components: Network Server
>    Affects Versions:
>         Environment: java version "1.6.0"
> Java(TM) SE Runtime Environment (build pmz3160sr2ifix-20081021_01(SR2+IZ32776+IZ33456))
> IBM J9 VM (build 2.4, J2RE 1.6.0 IBM J9 2.4 z/OS s390-31 jvmmz3160ifx-20081010_24288
(JIT enabled, AOT enabled)
> J9VM - 20081009_024288_bHdSMr
> JIT  - r9_20080721_1330ifx2
> GC   - 20080724_AA)
> JCL  - 20080808_02
> RC2
>            Reporter: Kathey Marsden
>         Attachments: crashdumps.zip
> With  pmz3160sr2ifix-20081021_01(SR2+IZ32776+IZ33456 there were  6 javacore files produced
during the test run with jvm crashes shutting down network server.
> 1TISIGINFO     Dump Event "systhrow" (00040000) Detail "java/lang/OutOfMemoryError" "native
memory exhausted" received 
> 1TIDATETIME    Date:                 2009/04/16 at 23:04:20
> The command line in two  javacore was starting the replication run.
> 1CICMDLINE     /u/vanlm/pmz3160sr2ifx-20081021_01/J6.0/bin/java -Dderby.tests.trace=true
-Dtest.serverHost=localhost -Dtest.serverPort=1527 -Dtest.inserts=10000 -Dtest.commitFreq=1000
-classpath .:/u/vanlm/10.5/jars/derbyrun.jar:/u/vanlm/10.5/jars/junit.jar:/u/vanlm/10.5/jars/derbyTesting.jar:/u/vanlm/10.5/jars/jakarta-oro-2.0.8.jar
junit.textui.TestRunner org.apache.derbyTesting.functionTests.tests.replicationTests.ReplicationTestRun
> I never knew the replication run was launched in another process like this.
> The others were just simple server shutdowns:
> 1CICMDLINE     /u/vanlm/pmz3160sr2ifx-20081021_01/J6.0/bin/java -Dderby.infolog.append=true
-cp .:/u/vanlm/10.5/jars/derbyrun.jar:/u/vanlm/10.5/jars/junit.jar:/u/vanlm/10.5/jars/derbyTesting.jar:/u/vanlm/10.5/jars/jakarta-oro-2.0.8.jar
org.apache.derby.drda.NetworkServerControl shutdown -h localhost -p 4527
> It is not clear to me how a simple shutdown could run out of native memory, since it
only simply starts java and writes a few bytes to a socket to shutdown the server.
> Then 40 minutes later the system shutdown with complaints that it was out of AUX space
>  09106 23:40:09.87 STC20757 00000010  ACTR001I VANLM9   STEP1    BPXPRFC   0001     
>  09106 23:40:11.79 STC20746 00000201  IEA794I SVC DUMP HAS CAPTURED: 379            
>                         379 00000201  DUMPID=004 REQUESTED BY JOB (VANLM   )        
>                         379 00000201  DUMP TITLE=COMPON=ISG,COMPID=SCSDS,ISSUER=ISGRREC
>                         379 00000201             T  +????,ABEND=S0738,REASON=023E0004
>  09106 23:40:11.83          00000201  IEF196I IGD100I 2030 ALLOCATED TO DDNAME SYS00007
DATACLAS (        )  
>  09106 23:40:30.76          00000010  IRA205I 50% AUXILIARY STORAGE ALLOCATED       
>  09106 23:40:36.76          00000010 *IRA200E AUXILIARY STORAGE SHORTAGE          
> It appears the Aux space issue occurred because there was not sufficient space to write
the dumps from the prior events, but it is not clear why it didn't happen for 40 minutes.
> The crashes did not cause any tests to fail and the run completed reporting only:
> There was 1 failure:
> 1) testMkdirsInvalidAbsolute(org.apache.derbyTesting.unitTests.junit.VirtualFileTest)junit.framework.AssertionFailedErro
> r
>         at org.apache.derbyTesting.unitTests.junit.VirtualFileTest.testMkdirsInvalidAbsolute(VirtualFileTest.java:94)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
>         at org.apache.derbyTesting.junit.BaseTestCase.runBare(BaseTestCase.java:105)
> Tests run: 10939,  Failures: 1,  Errors: 0
> $
> I did not notice this happening with the 64bit jvm when I ran against RC1 but
there is a chance that it occurred and I didn't notice beaause it does not actually cause
tests to fail for some reason.

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