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Date: Mon, 23 Dec 2013 05:41:32 -0800 (PST)
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Subject: Frequent FULL gc's and then heap crash, why?
From: kwiateks@gmail.com
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Xref: csiph.com comp.lang.java.help:2870

Hello,

I am running weblogic with jdk 1.7_0_25. We had been running an application=
 for YEARS on jdk 1.6_0_xx without issue. When we migrated to jdk 1.7 we st=
arted having issues with GC.... Server works fine for several days, I see n=
ormal gc's, but then all of a sudden it goes in a continuous FULL GC cycle =
and will not stop... ideas??

416355.858: [GC [PSYoungGen: 620307K->57440K(620736K)] 1991153K->1428285K(2=
018880K), 0.0900130 secs] [Times: user=3D0.36 sys=3D0.00, real=3D0.11 secs]
416392.757: [GC [PSYoungGen: 605024K->62587K(610176K)] 1975869K->1433432K(2=
008320K), 0.0565270 secs] [Times: user=3D0.41 sys=3D0.00, real=3D0.05 secs]
416463.418: [GC [PSYoungGen: 610171K->51415K(620672K)] 1981016K->1430601K(2=
018816K), 0.0516100 secs] [Times: user=3D0.37 sys=3D0.00, real=3D0.05 secs]
416736.929: [GC [PSYoungGen: 592535K->50944K(619456K)] 1971721K->1432341K(2=
017600K), 0.0512740 secs] [Times: user=3D0.36 sys=3D0.00, real=3D0.05 secs]
416865.440: [GC [PSYoungGen: 592064K->51736K(623232K)] 1973461K->1435101K(2=
021376K), 0.0505060 secs] [Times: user=3D0.33 sys=3D0.01, real=3D0.05 secs]
417129.884: [GC [PSYoungGen: 598104K->51949K(622144K)] 1981469K->1436658K(2=
020288K), 0.0504380 secs] [Times: user=3D0.33 sys=3D0.00, real=3D0.05 secs]
417322.683: [GC [PSYoungGen: 598317K->54181K(624576K)] 1983026K->1440818K(2=
022720K), 0.0506910 secs] [Times: user=3D0.36 sys=3D0.00, real=3D0.05 secs]
417597.562: [GC [PSYoungGen: 604069K->52297K(624320K)] 1990706K->1444571K(2=
022464K), 0.0752950 secs] [Times: user=3D0.35 sys=3D0.00, real=3D0.07 secs]
417597.638: [Full GC [PSYoungGen: 52297K->1022K(624320K)] [ParOldGen: 13922=
73K->1398143K(1398144K)] 1444571K->1399166K(2022464K) [PSPermGen: 162096K->=
161853K(199808K)], 2.3327670 secs] [Times: user=3D15.54 sys=3D0.03, real=3D=
2.33 secs]
417743.769: [Full GC [PSYoungGen: 550910K->11213K(624320K)] [ParOldGen: 139=
8143K->1396146K(1398144K)] 1949054K->1407360K(2022464K) [PSPermGen: 161853K=
->161853K(194496K)], 2.7090850 secs] [Times: user=3D18.77 sys=3D0.06, real=
=3D2.71 secs]
418023.140: [Full GC [PSYoungGen: 549888K->9270K(624320K)] [ParOldGen: 1396=
146K->1397934K(1398144K)] 1946034K->1407205K(2022464K) [PSPermGen: 161853K-=
>161853K(189248K)], 2.8707310 secs] [Times: user=3D19.94 sys=3D0.08, real=
=3D2.87 secs]
418342.476: [Full GC [PSYoungGen: 549888K->2929K(624320K)] [ParOldGen: 1397=
934K->1398143K(1398144K)] 1947822K->1401072K(2022464K) [PSPermGen: 161894K-=
>161835K(184960K)], 2.7683850 secs] [Times: user=3D18.73 sys=3D0.05, real=
=3D2.80 secs]
.
.
.

Exception in thread "DoSManager"
Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHand=
ler in thread "DoSManager"
Exception in thread "Thread-13" java.lang.OutOfMemoryError: Java heap space

<Dec 22, 2013 5:42:07 AM EST> <Error> <Socket> <BEA-000405> <Uncaught Throw=
able in processSockets
 java.lang.OutOfMemoryError: Java heap space.
java.lang.OutOfMemoryError: Java heap space
>
<Dec 22, 2013 5:42:57 AM EST> <Error> <Server> <BEA-002608> <The ListenThre=
ad failed because of an error: java.lang.OutOfMemoryError: Java heap space
java.lang.OutOfMemoryError: Java heap space
        at weblogic.utils.io.Chunk.<init>(Chunk.java:348)
        at weblogic.utils.io.Chunk.getChunk(Chunk.java:183)
        at weblogic.socket.AbstractMuxableSocket.<init>(AbstractMuxableSock=
et.java:117)
        at weblogic.socket.MuxableSocketDiscriminator.<init>(MuxableSocketD=
iscriminator.java:51)
        at weblogic.server.channels.DynamicListenThread.registerSocket(Dyna=
micListenThread.java:389)
        Truncated. see log file for complete stacktrace
>