CODEWITHSUNDEEP
javatomcatjvmliferay
Midnik47
Midnik47

Reputation: 141

java permGen out of memory error tomcat- liferay server

i am working with liferay portal ,when deploying portlet on running server that returns 

java.lang.OutOfMemoryError: PermGen space

this error coming not regularly,liferay running on tomcat, how can i solve this particular ??problem.

I tried adding JAVA_OPTS with the value as -Xms128m -Xmx256m in System Variables, still I am getting the same error (java.lang.OutOfMemoryError: PermGen space) again and again. Any help will be appreciated. I have also read other post in stackoverflow also but it didn't worked out.

Upvotes: 0

Views: 8879

Answers (4)

Jyoti
Jyoti

Reputation: 21

You should try to add following line in the Memory ARGS: field in Tomcat setting.

-XX:NewSize=700m -XX:MaxNewSize=700m -Xms1024m -Xmx2048m -XX:MaxPermSize=768m

You can see in the link.

Screenshot

Upvotes: 0

Daniele Baggio
Daniele Baggio

Reputation: 2257

Expecially since Liferay 6.2 it's important to increase the default Perm size from 256mb to 512 mb. 256mb today is not enough to support the Liferay and some plugins.

-XX:MaxPermSize=512m

Upvotes: 3

Ruchira Gayan Ranaweera
Ruchira Gayan Ranaweera

Reputation: 35557

-Xms1024m -Xmx1024m are heap size configuration not PermGen.

-Xms1024m is minimum heap size and -Xmx1024m maximum heap size.

You have to use 

-XX:MaxPermSize=256m // now it is 256MB you can increase it

to configure PermGen

Edit:

I am adding this part to address your comment.

What is PermGen?

The permanent generation is special because it holds meta-data describing user classes (classes that are not part of the Java language). Examples of such meta-data are objects describing classes and methods and they are stored in the Permanent Generation. Applications with large code-base can quickly fill up this segment of the heap which will cause java.lang.OutOfMemoryError: PermGen no matter how high your -Xmx and how much memory you have on the machine.

Upvotes: 2

Maas
Maas

Reputation: 1357

You need to increase the PermGen space in your tomcat.

Use the following Java option:

-XX:MaxPermSize=256m

Refer to this question for more details. It looks similar.

Upvotes: 1

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