I'm using Tomcat for Java and JSP in a large server-side application under NT4. Most of it works fine, but in a few parts of the application, Tomcat crashes: Application Error. The instruction at "<memory address>" referenced memory at "<memory address>". The memory cannot be read.
This error is semi-repeatable. It only shows up in some parts of the application, but not every time, even though I take exactly the same path through the application after starting Tomcat. It never happens immediately after starting the app., but only when I reach one particular part: but as I've said, it doesn't always happen, even with identical inputs. Perhaps it shows up one time in 5. The Java code itself is OK: it has run fine on the same machine under New Atlanta's ServletExec servlet engine, and under various flavours of Linux using the JRun servlet engine. On one ISP, it has run for a year and a half without any crashes. The crash also happens - same version of Tomcat - on a colleague's Windows XP machine, and shows the same semi-repeatability. Lest anybody suggest it's an out-of-memory error, this machine has at least 128 MB (don't know exactly) against my 64MB. The part of the application that sometimes crashes is not generating any large objects. Any developers lurking here? I'd like to use Tomcat, but dare not if it is going to fail with this kind of random error. What puzzles me is this semi-repeatability - why, if the fault is only provoked in specific parts of the application, does it not happen every time? I've not found any other reports of such crashes in the mail archives. My system: Tomcat 4.0.4 is running stand-alone on Windows NT 4 (service pack 3); starting it by invoking Tomcat's startup.bat from a DOS window. My Java is Sun's "Classic VM (build JDK-1.2-V, native threads)". Machine is a 64 MB Dell Latitude. My colleague's system is a new Sony Vaio running Windows XP, same version of Tomcat, also a Sun JVM but probably a slightly newer one. Tomcat running as a service. This probably isn't relevant, but on both systems, the web browser is also running on the same machine, using loopback to connect to the server. I've not been able to get any info about the error from Tomcat's logs, or from the DOS window in which I started it. Jocelyn Paine http://www.ifs.org.uk/~popx/ +44 (0)7768 534 091 -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
