Question

Heap size on tomcat 6

Asked by: w_serena

I have Apache Tomcat 6 installed on my PC. If I deploy more than 2 applications in Tomcat, it starts giving me "Heap size: Out of memory" exception.

I have 4 GB RAM and windows XP OS.

Can someone please let me know how to increase the Heap Size.

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Asked On
2009-04-03 at 02:43:14ID24291626
Topics

Apache Tomcat Application Server

,

Java Programming Language

,

Java Server Pages (JSP)

Participating Experts
2
Points
150
Comments
9

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Answers

 

by: objectsPosted on 2009-04-03 at 02:45:38ID: 24058130

add -Xmx1g to the JAVA_OPTS environemtn var

 

by: Giant2Posted on 2009-04-03 at 05:01:51ID: 24058865

If you use ApacheTomcatMonitor you can easily set (like objects said before) in the menu "Configure" and tab "Java".

 

by: w_serenaPosted on 2009-04-06 at 01:35:54ID: 24075264

Thanks a lot for replying.

>> add -Xmx1g to the JAVA_OPTS environemtn var

Where can I find that? I cannot find it in Control Panel --> System --> environment variables

>>If you use ApacheTomcatMonitor you can easily set (like objects said before) in the menu "Configure" and tab "Java".

How to use Apache tomcat Monitor? I think it comes in the sidebar once you install Tomcat. But I didn't install tomcat. I downloaded the zip from Apache site and upon unzipping started using it. There was no installation.

 

by: objectsPosted on 2009-04-06 at 01:52:56ID: 24075345

> Where can I find that? I cannot find it in Control Panel --> System --> environment variables

add it

 

by: w_serenaPosted on 2009-04-06 at 21:19:33ID: 24083914

thanks a lot for replying.

I have made this setting. Still I am sometimes getting Out of Memory exception.

I tried setting the value as -Xmx2g for JAVA_OPTS, user variable. If I do that the tomcat server does not start.
shouldn't 2GB be acceptable when my system shows total RAM as 3.46 GB?

 

by: objectsPosted on 2009-04-06 at 21:33:28ID: 24083949

try increasing it
how much ram do your webapps need?

 

by: w_serenaPosted on 2009-04-06 at 23:33:16ID: 24084376

2GB. I increased it as mentiond above by setting -Xmx2g for JAVA_OPTS but server doesn't start if I do that

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