Caused by: java.lang.OutOfMemoryError: PermGen space ......what kind of error is this?

hi,, sometimes i get the following error on cosole of eclipse and evry time i need to restart tomcat server :-

Caused by: java.lang.OutOfMemoryError: PermGen space

what is this error and how to resolve this ?

thanks in advance

As the error says, your system (or memory allocated to jvm) is running out of memory.

You may allocate more memory using when you run java program "-Xms512m -Xmx1024m", if there are more memory in your system

Please note that, you may change minimum and maximum memory to 1024 and 2048, if there is more than 2 GB memory

Eclipse questions are more suited in the IDE forum
CarefullyChooseOneForum

Moving.

Your are running out of permgen space, so setting -Xmx and -Xms will not help. You will need to set -XX:MaxPermSize=128M (or other suitable size)

Peter Johnson wrote:Your are running out of permgen space, so setting -Xmx and -Xms will not help. You will need to set -XX:MaxPermSize=128M (or other suitable size)

True, set -XX:MaxPermSize=256M as a first statement in catalina.bat

True, set -XX:MaxPermSize=256M as a first statement in catalina.bat

can please tell me where exactly this catalina.bat would be available ?

thank you

bin directory of tomcat

True, set -XX:MaxPermSize=256M as a first statement in catalina.bat

Thanks buddy i have got catalina.bat.
now please tell me one more thing that how much size can be given ?

like for e.g. - iam running 3GB of RAM. So can i provide 1024MB of that ?
does allocating more amount of memory would results in something bad or good ?

thank you

If you need 1G of PermGen space something is horribly, horribly wrong. The default (I think) is 64M; as suggested try 128M, or possibly 256M (that seems high to me, but you never know).