Servlet.service() for servlet action threw exception java.lang.OutOfMemoryError: PermGen space

[Mohit Kumar Tayal]

Hello,

I am working on a web application developed in struts 1.2 framework. I am getting the error when i am redeploying the application:

Servlet.service() for servlet action threw exception java.lang.OutOfMemoryError: PermGen space

I have goggled but found solution to increase the memory size this not solves the problem but postponed the error.

Please tell me what may be the reason for getting this error and how to solve this permanently.

Thank you.

[gokul subramanian]

just restart the server... to resolve the error permanently just increase JVM

[Mohit Kumar Tayal]

Hi gokul,

i have tried this by increasing the size of jvm.

but is it the only way to postpone the problem.

please tell me why this problem comes and when this is going to happen.

[Lester Burnham]

The TomcatFaq discusses this issue.

[Mohit Kumar Tayal]

Hi i found one solution something saying this:

-XX:+CMSClassUnloadingEnabled -XX:+CMSPermGenSweepingEnabled and -XX:+UseConcMarkSweepGC

but i am not getting where to change for this means how to get effect with these lines.

And also please tell me is this the right way to solve the problem.

[gokul subramanian]

Hi Mohit Kumar Tayal ,
can i know which ide are you using....

[Mohit Kumar Tayal]

Hi gokul,

I am using MyEclipse but the problem comes after deploying the application on live servers after 3-4 days on restarting the application not on my development system.

[Joe Ess]

You can increase the size of the PermGen space. This will buy you time between occurrences, not fix the problem as Gokul states.
Follow Lester's link. This problem has to do with how the classloader works. There is no workaround that I have seen.