On 10/14/2010 02:19 PM, rujin raj wrote:
I have Installed tomcat 5.5.20 on my windows 2008 server with 32 GB physical memory and the Java version is jre1.6.0.
Is the OS installation 64-bit or 32-bit? If the application is 64-bit, is the Java installation 64-bit or 32-bit? (I suppose your Java installation is 32-bit)
Five applications are installed in it.Today i got one error and
> applications not working.Error as follows
Tomcat log: *14 Oct, 2010 4:08:05 PM org.apache.tomcat.util.threads.ThreadPool$ControlRunnable run* *SEVERE: Caught exception (java.lang.OutOfMemoryError: unable to create new native thread) executing org.apache.tomcat.util.net.leaderfollowerworkerthr...@10d564d, terminating thread* * * In javaVM I set the initial memory pool size as 1000MB, Max memory pool size as 1200MB and thread stack size as blank.More over I am not able to set the minimum pool size more than 1024 MB. How can I increase the JVM memory more than 1GB??
First, a 64-bit Java installation is needed. And this is only available, if the operating system installation is 64-bit. With these two requirements fulfilled, the JVM can be configured with larger memory allocations.
What might me the cause for java out of memory error? How to resolve the problem?
I'm a bit uncertain of the error message, however: it may be that it's not actually JVM memory that is exhausted, but threads. Could it be that your application is starting new threads, but not disposing of them properly? If it is a memory exhaustion situation, you should be able to find numerous discussions on how to pinpoint memory leaks in applications running under Tomcat. Some of the memory analysis techniques might help in resolving thread exhaustion issues, too (if you can locate the unexpected thread objects and find what is keeping them alive). Another way to find out about the threads is to produce a thread dump of the running JVM (that also has been often discussed on this list). --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
