How to increase application heap size in Eclipse?

There are many ways to increase the application heap size in Eclipse.

a.   Launching Eclipse by passing the heap size

b.   Configuring heap size in eclipse.ini file

c.   Updating vm arguments of installed jre

Launching Eclipse by passing the heap size

eclipse [normal arguments] -vmargs -Xmx512M [more VM args]

Above command launch the eclipse with heap size of 512MB.

Configuring heap size in eclipse.ini file

You can configure the heap size in ‘eclipse.ini’ file.

Here is an example.

-startup
plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.300.v20150602-1417
-product
org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
256M
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
--launcher.appendVmargs
-vmargs
-Dosgi.requiredJavaVersion=1.7
-Xms256m
-Xmx1024m

Updating vm arguments of installed jre

Open Eclipse. Window -> Preferences

Select the installed jre and click on Edit button

Add the vm arguments and click on the button Finish.

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