Re: Tomcat Crashing on Linux

[Rick Roberts]

I have loggin on my webapp.  There is nothing regarding this problem in that log 
file.

Shapira, Yoav wrote:
Howdy,
Make sure you're not creating any non-daemon threads that will prevent
tomcat from shutting down gracefully.  And add logging to your webapp ;)
Yoav Shapira
Millennium ChemInformatics


-----Original Message-----
From: Rick Roberts [mailto:[EMAIL PROTECTED]
Sent: Tuesday, July 29, 2003 11:24 AM
To: Tomcat Users List
Subject: Tomcat Crashing on Linux
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:
[EMAIL PROTECTED] 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(PoolTcpEnd
poin

t.java:326)
       at
org.apache.tomcat.util.net.PoolTcpEndpoint.acceptSocket(PoolTcpEndpoint
.jav

a:397)
       at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:5
29)

       at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPoo
l.ja

va: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(PoolTcpEnd
poin

t.java:338)
       at
org.apache.tomcat.util.net.PoolTcpEndpoint.acceptSocket(PoolTcpEndpoint
.jav

a:397)
       at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:5
29)

       at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPoo
l.ja

va: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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* Rick Roberts                            *
* Advanced Information Technologies, Inc. *
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