How to Lower Heap Size of WebSphere Server

java websphere ibm-rad
Connection picture Connection · Jul 7, 2011 · Viewed 12.8k times · Source

I tried to change the Heap Size of my local WebSphere Server instance to 2G using the "Run Administrative Console" function in RAD but apparently, that was too big of a number. Now, I can't start the server anymore and I get this error:

JVMJ9VM015W Initialization error for library j9gc23(2): Failed to instantiate heap.  2G requested
Could not create the Java virtual machine.

I can't just change it back to a lower number because I can't seem to use the "Run Admin Console" function without starting the server first so I was wondering if anyone knew where the config file is kept for this? How can fix this problem?

Answer

Manglu picture Manglu · Jul 8, 2011

Work with the server.xml under the config/cells/cellName/nodes/nodename/servers/servername/ directory.

cellName and nodename would likley be based on your host name. I have kept them as cellName (and nodename) here in the structure above.

The servername would be the default server1

Look towards the bottom of the file

It would have something like this: (Change the initialHeapSize and maximumHeapSize)

Save the file and start your server and you should be able wot work with the server.

HTH

Manglu

Related questions

Where to find the translated JSP servlet code in Eclipse / RAD?

I'm using IBM RAD v7 which is based on Eclipse and I've got a NullPointerException in a compiled JSP that I want to troubleshoot. So I wonder where websphere / Eclipse (IBM RAD) stores the source for the compiled JSP that …

Read More
Error: Projects containing version <unknown> deployment descriptors require XMI-format bindings or extensions files. ibm-web-bnd.xml

I have upgraded editor from Rad 7.5 to 8 and maven 2 to 3. This happens just after importing existing maven projects in RAD 8, but I have no errors on any pom files. The issue is with two xml files : Projects containing version deployment …

Read More
RAD won't deploy class files to running websphere server (local development0

Environment: WinXP. RAD: Version: 7.5.3 (Eclipse 3.4.2) Websphere 6.1 I have two web projects on my local RAD environment and 4 or 5 sub jar projects. When I change classes in debug and regular start mode, the files don't get copied to the server for …

Read More