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Editorial Team
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Asked: 2026-05-21T21:34:19+00:00

I face a very annoyed exception in glassfish which is SEVERE: Exception in thread

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I face a very annoyed exception in glassfish which is 

SEVERE: Exception in thread "RMI RenewClean-[192.168.1.2:8686]" 
SEVERE: PermGen space
java.lang.OutOfMemoryError: PermGen space

my hardware resources r high, and when I open task manager and notice the resources, it’s available,
this exception force me to restart my pc every 10 to 15 minutes 🙁 what should I do?

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1 Answer

  1. Editorial Team

    You need to increase the amount of PermGen space using the -XX:MaxPermSize=256m flag.
    See this related SO question

    In order to set this up in Glassfish, use the following steps:

    • Connect to the admin interface of your Glassfish server (localhost:4848)
    • Move to Application Server > JVM Setting > JVM Options and check the global amount of memory allocated to your instance of Glassfish (should be something like -Xmx512m or more) and add one JVM Option with value:

    -XX:MaxPermSize=256m

    The amount of memory depends on the amount you need. Increase it if it keeps crashing, but reading the PermGen article may help in determining the right amount.

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