Installing and Configuring JDeveloper IDE - Oracle ADF 11gR2 Development Beginner's Guide - page 10

To increase the JDeveloper memory, set the following options in the
appropriate files specified previously. Some of the JVM options are
explained as follows:
AddVMOption is used to optimize the memory for
JDeveloper IDE
Xms is the initial Java Heap size
Xmx is the maximum Java Heap size
XX:MaxPermSize is used to set the maximum Java
permanent size
Please note that the following seing depends on the available
memory in your system:
Add AddVMOption -Xms512M AddVMOption -Xmx1024M
in ide.conf .
Add AddVMOption -Xmx512M AddVMOption
-XX:MaxPermSize=1024M in jdev.conf .
To configure the boot behavior of the IDE or JDeveloper, we modify the following files:
MW_HOME/jdeveloper/ide/bin/ide.boot
MW_HOME/jdeveloper/jdev/bin/jdev.boot
The seings for the iles mostly correspond to the system properies. To conigure the
JDK-related properies for the IDE, modify MW_HOME/jdeveloper/ide/bin/jdk.conf .
For example, you can include opions such as the following opion for Java2D to allow
DirectDraw usage in Windows:
AddVMOption -Dsun.java2d.noddraw=true
You can add other VM opions to the .conf iles as well. The override sequence is jdk.conf,
then ide.conf, followed by jdev.conf.
Use JAVA_HOME/bin/jvisualvm.exe to monitor and profile
Jdeveloper.exe . This tool will also help you gather VM opions
and system properies of the currently running JDeveloper.