Fix JDeveloper 11g Unable to create a instance of the Java Virtual machine problem ____java

Today tried the JDeveloper 11, after the installation of the operation error, prompted unable to create a instance of the Java Virtual machine!

On-Line solutions:

Open the ide.conf file in the <oracle jdeveloper>ide/bin/directory, which

addvmoption-xmx640m
addvmoption-xms128m

Add a row after the comment

addvmoption-xx:maxpermsize=256m

Which is the final result

#AddVMOption-xmx640m
#AddVMOption-xms128m
addvmoption-xx:maxpermsize=256m

In practice, it is only necessary to modify the ide.conf file in the <oracle jdeveloper>ide/bin/directory to:

addvmoption-xmx320m
addvmoption-xms128m