[Php-java-bridge-users] Tomcat5 + apache2 + Javabridge unstable

[<php...@li...>]

Hello,

I'm currently using the PHP javabridge to use lucene together with PHP5.
I developed our application and everything looked fine. Some stress test
pointed me in the direction to use Tomcat as a servlet engine. we had an
4time speed increase after that. Everything looked fine till it went in
production.
The setup Tomcat and Apache started acting weird. Sometimes the code throws
this error while other javabridge parts of the page work:
Fatal error: php_mod_java(98): Call object is null: The connection to the
current back end doesn't exist anymore; probably the current back end has
been restarted w/o restarting the front end.
the problem is basically that the production server is not stable. If anyone
has a suggestion how to make this setup reliable and have some suggestions
to tune apache/tomcat/javabridge/lucene?

Greets,

Gilbert