CODEWITHSUNDEEP
javajakarta-eetomcat
Rakesh Chouhan
Rakesh Chouhan

Reputation: 1230

Find out the number of loaded classes

I am working with an enterprise application, It is an search and book portal. I searched for an item and started jconsole to check the performance on my local machine, It loads the classes for each search and after 2-3 searched the server dies.

I am using jdk1.7 and tomcat7 server.

How can I find out which classes loading for each search ?

Thanks in advance.

Upvotes: 0

Views: 169

Answers (2)

Eddy
Eddy

Reputation: 1812

it looks like an OOM error, you should configure your JVM to generate a heap dump. For example add these to the java commandline options

-XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/var/tmp/dumps

and use a heapdump analyzer such as http://www.eclipse.org/mat/ to understand what is going on.

Best, Edoardo

Upvotes: 1

Shinichi Kai
Shinichi Kai

Reputation: 4523

Is this you are looking for?

java -verbose:class

You can specify this option in CATALINA_HOME\bin\setenv.bat (or .sh) file.

for example:

set JAVA_OPTS=-verbose:class

Hope this helps.

Upvotes: 0

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