Problems with concurrent users accessing servlets on Apache1.3.22-Tomcat 4.0

[Satish Mahankali]

Hi,

  I have the following environment setup

  Apache 1.3.22, Tomcat 4.0, Connector:WARP, OS: Windows 2000

  Our JSP's/Servlets work perfectly fine when a single user is accessing the
same.

  For some reason when two or more users access our web site concurrently,
we get wierd results where an Internal Server Error with HTTP 500 - Page
Cannot be displayed is thrown back to the browser. Then I thought the
problem may be because of our servlets but then, put a sleep of 10 sec in
the example servlets of Tomcat4.0 (RequestInfoExample.java) and still
getting the same results with Tomcat example Servlets as well. The whole
setup seems to be behaving like where only one user can use the system at
the same time.

Any help would be highly appreciated.


Here's the configuration:

APACHE: httpd.conf
==================
LoadModule webapp_module modules/mod_webapp.so
AddModule mod_webapp.c

NameVirtualHost ggnnok108220

WebAppConnection conn warp localhost:8008

<VirtualHost ggnnok108220:80>
serverName ggnnok108220
WebAppDeploy examples conn /examples/
</VirtualHost>

SSLMutex sem
SSLRandomSeed startup builtin
SSLSessionCache none

SSLLog logs/SSL.log
SSLLogLevel error

<VirtualHost ggnnok108220:443>
serverName ggnnok108220
#WebAppDeploy IPDC conn /IPDC/
WebAppDeploy examples conn /examples/
SSLEngine On
SSLCertificateFile conf/ssl/test-ipdc.cert
SSLCertificateKeyFile conf/ssl/test-ipdc.key
</VirtualHost>



Tomcat: Server.xml configuration
================================

<Server port="8005" shutdown="SHUTDOWN" debug="0">
  <Service name="Tomcat-Apache">

    <Connector className="org.apache.catalina.connector.warp.WarpConnector"
     port="8008" minProcessors="5" maxProcessors="75"
     enableLookups="false"
     acceptCount="10" debug="0"/>

    <!-- Replace "localhost" with what your Apache "ServerName" is set
to -->
    <Engine className="org.apache.catalina.connector.warp.WarpEngine"
     name="Apache" debug="0" appBase="webapps">

      <!-- Global logger unless overridden at lower levels -->
      <Logger className="org.apache.catalina.logger.FileLogger"
              prefix="apache_log." suffix=".txt"
              timestamp="true"/>

      <!-- Because this Realm is here, an instance will be shared
globally -->
      <Realm className="org.apache.catalina.realm.MemoryRealm" />

    </Engine>

  </Service>

</Server>


Regards,
Satish.



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