Howdy,
The KERN_EXCEPTION excerpt suggests an internal VM crash.  I'm not
family with Mac OS, but could it maybe need some patches (from Sun) to
run the JDK?  Have you tried JDK 1.4.1?

Yoav Shapira
Millennium ChemInformatics


>-----Original Message-----
>From: Dan McGowan [mailto:[EMAIL PROTECTED]]
>Sent: Wednesday, February 12, 2003 6:01 PM
>To: [EMAIL PROTECTED]
>Subject: tomcat crash puzzle
>
>All,
>     I am having recurring problems with tomcat crashing. It crashes
>routinely several times per week during peek access and off hours.
>Particulars:
>
>version:  4.1.12
>os:   Mac OS X 10.2.3
>hardware: X-Serve 512 mb ram
>java: 1.3.1
>db: MySQL 3.23.53
>java framework: struts 1.0
>
>Note: not using connector with apache. Tomcat using port 80
>
>I have examined tomcat and application logs and I am not seeing any
>correlation to the actual crash. It would be great to post associated
>tracebacks but I am having difficulty establishing a pattern. The
>application exceptions are normal and the servlet log exceptions are
>commonly a broken pipe:
>
>(Example: 2003-02-12 14:08:14 StandardWrapperValve[default]:
>Servlet.service() for servlet default threw exception
>java.io.IOException: Broken pipe...). Again the time correlation for
>these exceptions do not match the time the server crashes.  The logs I
>have examined are
>
>Application log: log4j.log ...logging exceptions
>Tomcat system log: Catalina.out
>Various loggers for the deployed contexts
>Connection pool log
>Cryptic apple crash log...here is an excerpt:
>
>"...Exception:  EXC_BAD_ACCESS (0x0001)
>Codes:      KERN_PROTECTION_FAILURE (0x0002) at 0x00000008..."
>
>Within this log Thread 2 seems to be the thread that crashes most
often.
>
>My first thought was a resource problem, so I closely examined my
>database connection pooling. Logs confirm that connections are opened
>and closed properly and the growth of the pool is managed and never
>grows beyond the specified number of connections. When the server
>crashes the pool is behaving normally.
>
>In addition I have set the memory min and max parameters for tomcat in
>the startup script (JAVA_OPTS = -server -Xmx256m -Xms128m). Any
>suggestions on causation and/or data collection would be greatly
>appreciated. Thanks,
>
>Dan McGowan
>[EMAIL PROTECTED]



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