Hi, >able to access MySQL databases from other servers with the servlets that >I've programmed. However, after a time, it cannot seem to connect to the
Are there any error messages? >databases through servlets, yet when I run Java standalone equivalents of >the servlets, they connect to the databases just fine. Also, when these It's very difficult to simulate a servlet environment outside a servlet container. There are always timing, threading, and other issues that are subtle and easy to overlook. Nonetheless, stand-alone tests are useful. Just don't rely on them to say with 100% certainty that the code is right. >connection problems start, I tried to stop the Tomcat service then restart >it, but it cannot shut down. I can't even "hard kill" it through Task Tomcat will not shutdown if you (explicitly or through some 3rd party software you're using in your webapp) have started non-daemon threads. See the JavaDoc for the Thread class for an example. If the above is happening, there are several possible workarounds. Perhaps the simplest one is to write a ServletContextListener that calls System.exit() at the end of its contextDestroyed() method. Obviously, you want to make sure yours is the only webapp on the tomcat instance if you take this approach. Additional configuration and logging details would help us help you ;) Yoav Shapira Millennium ChemInformatics
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