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From "Shapira, Yoav" <Yoav.Shap...@mpi.com>
Subject RE: Tomcat/JVM dumps core on unexpected signal 11 - intermittent behavior
Date Thu, 26 Feb 2004 17:10:58 GMT

Hola,
We had a problem like this on SunOS 5.8 and eventually narrowed it down
to not having installed the Solaris OS patches for JDK 1.4.  There are
patches for JDK 1.3 as well: make sure you have them installed.  See
this page for a list:
http://sunsolve.sun.com/pub-cgi/show.pl?target=patches/J2SE

Yoav Shapira
Millennium ChemInformatics


>-----Original Message-----
>From: Ferit Albukrek [mailto:falbukrek@sbigroup.com]
>Sent: Thursday, February 26, 2004 11:54 AM
>To: tomcat-user@jakarta.apache.org
>Subject: Tomcat/JVM dumps core on unexpected signal 11 - intermittent
>behavior
>
>
>Hello,
>
>I am seeking help in diagnosing possible causes for an intermittent
>crash we are experiencing with:
>
>* Tomcat/4.1.24
>* Apache/1.3.27
>* mod_jk2/2.0.3
>* Java 1.3.1_10
>* SunOS 5.8
>
>#### What Happens:
>* JVM core dumps and reports unexpected signal 11.  (see below for the
>log file message)
>* Strange anomaly in the catalina.out file: some threads have very
large
>numbers. For example:
>
>	DEBUG 26 Feb 2004 11:34:27,456 [Thread-84] (?:?) - Adding
>transient cookie ...U1375264
>	DEBUG 26 Feb 2004 11:34:30,987 [Thread-14] (?:?) - Adding
>transient cookie ...U1375265
>	DEBUG 26 Feb 2004 11:34:33,811 [Thread-1148] (?:?) - Adding
>transient cookie ...U1375266
>	DEBUG 26 Feb 2004 11:34:34,290 [Thread-1465] (?:?) - Adding
>transient cookie ...U1375267
>	DEBUG 26 Feb 2004 11:34:36,202 [Thread-1335] (?:?) - Adding
>transient cookie ...U1375268
>
>
>#### What I Have Found So Far:
>* Googled for the error code.  Sun has tagged it as irreproducible.
>* Many people have similar problems on other app server platforms.
>Nothing conclusive on fixes or cause however.
>* Tried jProfiler to see how the application behaves, but have not
found
>any tip-offs.
>
>#### My Questions:
>* Is it normal to have thread numbers in the thousands?  Usually there
>are one or two out-lyers initially, but they slowly increase.
>* Where do you think I should look for possible causes?
>* Have you encountered anything similar?
>
>Thank you for your help,
>
>- Ferit
>
>
>
>#### JVM Error file
>Unexpected Signal : 11 occurred at PC=0xfacb7014
>Function name=put (compiled Java code)
>Library=(N/A)
>
>Current Java thread:
>
>Dynamic libraries:
>0x10000         /usr/j2se/bin/../bin/sparc/native_threads/java
>0xff350000      /usr/lib/libthread.so.1
>0xff390000      /usr/lib/libdl.so.1
>0xff200000      /usr/lib/libc.so.1
>0xff340000      /usr/platform/SUNW,Sun-Fire-280R/lib/libc_psr.so.1
>0xfe000000      /usr/j2se/jre/lib/sparc/server/libjvm.so
>0xff2e0000      /usr/lib/libCrun.so.1
>0xff1e0000      /usr/lib/libsocket.so.1
>0xff100000      /usr/lib/libnsl.so.1
>0xff0d0000      /usr/lib/libm.so.1
>0xff310000      /usr/lib/libw.so.1
>0xff0b0000      /usr/lib/libmp.so.2
>0xff080000      /usr/j2se/jre/lib/sparc/native_threads/libhpi.so
>0xff050000      /usr/j2se/jre/lib/sparc/libverify.so
>0xfe7c0000      /usr/j2se/jre/lib/sparc/libjava.so
>0xff020000      /usr/j2se/jre/lib/sparc/libzip.so
>0xd6560000      /usr/j2se/jre/lib/sparc/libnet.so
>0xd6540000      /usr/lib/nss_files.so.1
>
>Local Time = Wed Feb 25 10:54:19 2004
>Elapsed Time = 39556
>#
># HotSpot Virtual Machine Error : 11
># Error ID : 4F530E43505002C4 01
># Please report this error at
># http://java.sun.com/cgi-bin/bugreport.cgi
>
>
>
>ferit albukrek
>director of technology
>sbi.razorfish
>617 250 2904 direct
>617 504 9477 mobile
>falbukrek@sbigroup.com <mailto:falbukrek@sbigroup.com>
>www.sbigroup.com <http://www.sbigroup.com/>
>
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