Hi Chuck, Thanks again. I mentioned about setting the JAVA_OPTS because I thought that could be they key to my problem. Previously it was set to 512 and by the time it was set to 512, we were already experiencing panic issue that's why I thought of setting it to 1024. I am thinking about resetting the JAVA_OPTS to its previous value of 512. For several year, I did not experience the server panic issue even when the max heap is set to 512. But only recently last May when I deployed new codes in our war file, that's the time we experience server panic. I wonder which part of my code is too intensive for the Tomcat (or the JVM) to handle. So, I think we can leave the JAVA_OPTS thing and focus on the other, the JVM.
With regards to the JVM, do you think it can push the server to its limit until it will finally gives up? Server's processor is 3.4GHz and memory is 2G. I will consider replacing the JVM with the ones you suggested. But for the meantime, while I do not have these better JVM's yet, I'll check of removing the AgressiveHeap option in the JAVA_OPTS as advised by Jürgen. Best regards, Adrian "Caldarale, Charles R" <chuck.caldar...@unisys.com> 11/18/2011 03:46 PM Please respond to "Tomcat Users List" <users@tomcat.apache.org> To "Tomcat Users List" <users@tomcat.apache.org> cc Subject RE: Tomcat Causes Server to go Panic/Crash > From: Adrian Zara [mailto:adrian.z...@aonhewitt.com] > Subject: Re: Tomcat Causes Server to go Panic/Crash > As you can see in the JAVA_OPTS setting, I have set the > max heap size to 1G which is 50% of the total physical > memory and, if I'm not mistaken, I think we are running > only one application in the tomcat so I don't think it's > memory related but still not sure. Your problem highly likely is memory related. By setting JAVA_OPTS instead of CATALINA_OPTS you are trying to run both the Tomcat process and the shutdown process with 1 GB heaps each, plus the amount of memory needed for code, stacks, and other data areas of the two processes, plus whatever else is running in the machine. So put in a real JVM, set CATALINA_OPTS rather than JAVA_OPTS in setenv.sh, and try again. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org The information contained in this e-mail and any accompanying documents may contain information that is confidential or otherwise protected from disclosure. If you are not the intended recipient of this message, or if this message has been addressed to you in error, please immediately alert the sender by reply e-mail and then delete this message, including any attachments. Any dissemination, distribution or other use of the contents of this message by anyone other than the intended recipient is strictly prohibited. All messages sent to and from this e-mail address may be monitored as permitted by applicable law and regulations to ensure compliance with our internal policies and to protect our business. E-mails are not secure and cannot be guaranteed to be error free as they can be intercepted, amended, lost or destroyed, or contain viruses. You are deemed to have accepted these risks if you communicate with us by e-mail.
