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From Rick Roberts <techi...@ait-web.com>
Subject Re: Tomcat Crashing on Linux
Date Tue, 29 Jul 2003 15:29:58 GMT
Also,
The only way I can clear this error is to reboot the machine.

Here is another piece of info I get from "catalina_log.2003-07-29.txt" when I 
try the 2nd restart (/etc/init.d/tomcat restart)

2003-07-29 11:06:33 JDBCRealm[Standalone]: Exception closing database connection
java.sql.SQLException: Io exception: Broken pipe
         at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:114)
         at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:156)
         at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:269)
         at oracle.jdbc.driver.OracleConnection.close(OracleConnection.java:557)
         at org.apache.catalina.realm.JDBCRealm.close(Unknown Source)
         at org.apache.catalina.realm.JDBCRealm.stop(Unknown Source)
         at org.apache.catalina.core.ContainerBase.stop(Unknown Source)
         at org.apache.catalina.core.StandardService.stop(Unknown Source)
         at org.apache.catalina.core.StandardServer.stop(Unknown Source)
         at org.apache.catalina.startup.Catalina.start(Unknown Source)
         at org.apache.catalina.startup.Catalina.execute(Unknown Source)
         at org.apache.catalina.startup.Catalina.process(Unknown Source)
         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
         at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
         at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:324)
         at org.apache.catalina.startup.Bootstrap.main(Unknown Source)



Rick Roberts wrote:
> Tomcat is crashing every 2 - 3 days on 2 different Linux machines.
> Both machines are running pretty much identical software configurations.
> Both machines are serving the same web application so, it's almost 
> certainly something in my web app code that causes the problem.  
> However; the logs from my  web app do not tell me anything.
> 
> I am seeing this error on 2 different Linux machines.
> Tomcat just stops responding to my requests.
> Also when I restart Tomcat (using: "/etc/init.d/tomcat restart"), I get 
> this:
> 
> [root@abraxas root]# /etc/init.d/tomcat4 restart
> waiting for processes to exit                              [  OK  ]
> waiting for processes to exit
> waiting for processes to exit
> waiting for processes to exit
> waiting for processes to exit
> waiting for processes to exit
> waiting for processes to exit
> waiting for processes to exit
> 
> 
> The only info from logs I can find is from catalina.out:
> 
> Jul 29, 2003 10:54:06 AM org.apache.tomcat.util.net.PoolTcpEndpoint 
> closeServerSocket
> SEVERE: Caught exception trying to unlock accept.
> java.net.ConnectException: Connection refused
>         at java.net.PlainSocketImpl.socketConnect(Native Method)
>         at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305)
>         at 
> java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171)
>         at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158)
>         at java.net.Socket.connect(Socket.java:426)
>         at java.net.Socket.connect(Socket.java:376)
>         at java.net.Socket.<init>(Socket.java:291)
>         at java.net.Socket.<init>(Socket.java:119)
>         at 
> org.apache.tomcat.util.net.PoolTcpEndpoint.closeServerSocket(PoolTcpEndpoint.java:326)

> 
>         at 
> org.apache.tomcat.util.net.PoolTcpEndpoint.acceptSocket(PoolTcpEndpoint.java:397) 
> 
>         at 
> org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:529)
>         at 
> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619) 
> 
>         at java.lang.Thread.run(Thread.java:536)
> Jul 29, 2003 10:54:07 AM org.apache.tomcat.util.net.PoolTcpEndpoint 
> closeServerSocket
> SEVERE: Caught exception trying to close socket.
> java.lang.NullPointerException
>         at 
> org.apache.tomcat.util.net.PoolTcpEndpoint.closeServerSocket(PoolTcpEndpoint.java:338)

> 
>         at 
> org.apache.tomcat.util.net.PoolTcpEndpoint.acceptSocket(PoolTcpEndpoint.java:397) 
> 
>         at 
> org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:529)
>         at 
> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619) 
> 
>         at java.lang.Thread.run(Thread.java:536)
> Jul 29, 2003 10:54:07 AM org.apache.tomcat.util.net.PoolTcpEndpoint 
> acceptSocket
> WARNING: Reinitializing ServerSocket
> 
> 
> I'm using:
> RH 9 (kernel 2.4.20-19.9)
> Tomcat 4.1.24 ( RPM tomcat4-4.1.24-full.2jpp)
> Sun JDK 1.4 (j2sdk1.4.2)
> 
> Any help greatly appreciated.
> 
> Thanks,
> 

-- 
*******************************************
* Rick Roberts                            *
* Advanced Information Technologies, Inc. *
*******************************************


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