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Java Heap Space error is occurring

Java Heap Space error occurring in my system. I tried lot of solutions from Stack Overflow but nothing is working. When i am working
when pressing OK then
(No error in my project)
My eclipse.ini Is:
-startup
plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.200.v20120913-144807
-product
com.android.ide.eclipse.adt.package.product
--launcher.XXMaxPermSize
256M
-showsplash
com.android.ide.eclipse.adt.package.product
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vmargs
-Dosgi.requiredJavaVersion=1.6
-Declipse.buildId=v22.3.0-887826
-XX:MaxPermSize=512M
My RAM:4GB
Please help me to solve this issue.

It's because Eclipse runs out of memory. What you can do is increase the allocated memory by editing (or creating) the eclipse.ini file (on a root of eclipse directory) and putting the following code:
-vmargs
-Xms512m (for 512 Mb)
-Xmx1024m (for 1024 Mb)
For a full list of available options, please check this link.

Change in eclipse.ini
-startup
plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.200.v20120913-144807
-product
com.android.ide.eclipse.adt.package.product
--launcher.XXMaxPermSize
256M
-showsplash
com.android.ide.eclipse.adt.package.product
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vmargs
-Xms512m
-Xmx512m
-Dosgi.requiredJavaVersion=1.6
-Declipse.buildId=v22.3.0-887826
-XX:MaxPermSize=512M

you increase jvm memory in control panel. Its ok you have 4GB of memory but how much you have allocated for jvm to run is important let me know any further clarification.

How to increase heap memory of your java application in Eclipse

can anyone teach me how to increase your heap size using arguments like -Xms1024m -Xmx1024m ? What is the difference of Program argument and VM argument?

If you go to Run -> Run Configuration in the Arguments Tab you will find the VM Arguments section where you can add this.
Sample Entry in VM Arguments
-Xms50M -Xmx128M
In Program Arguments you mention the arguments which will be passed to the Main Class.

Go to the eclipse.ini file in Eclipse directory.
-startup
plugins/org.eclipse.equinox.launcher_1.3.0.v20130225-1645.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.200.v20130228-0336
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vmargs
-Xms1152m
-Xmx1152m
and change
**openFile
-vmargs
-Xms1152m
-Xmx1152m**
accordingly.

Eclipse Failed to create Java Virtual Machine after changing eclipse.ini file

-startup
plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.200.v20120522-1813
-showlocation
-showsplash
org.eclipse.platform
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
256M
-vm
C:/Program Files/Java/jdk1.7.0_09/jre/bin/server/jvm.dll
-vmargs
-Dosgi.requiredJavaVersion=1.6
-Dhelp.lucene.tokenizer=standard
-Declipse.p2.unsignedPolicy=allow
-Xms512m
-Xmx384m
-Xss4m
-XX:PermSize=128m
-XX:MaxPermSize=384m
-XX:CompileThreshold=5
-XX:MaxGCPauseMillis=10
-XX:MaxHeapFreeRatio=70
-XX:+CMSIncrementalPacing
-XX:+UnlockExperimentalVMOptions
-XX:+UseG1GC
-XX:+UseFastAccessorMethods
-Xincgc
-XX:-DontCompileHugeMethods
-XX:MaxInlineSize=1024
-XX:FreqInlineSize=1024
-Dcom.sun.management.jmxremote
-Dorg.eclipse.equinox.p2.reconciler.dropins.directory=C:/Prog/Java/eclipse_addons
-Dsun.lang.ClassLoader.allowArraySyntax=true
-debug
org.eclipse.equinox.p2.core/debug=true
org.eclipse.equinox.p2.core/reconciler=true
This is my eclipse.ini file after I changed it. This is the eclipse.ini file before I changed it:
-startup
plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.200.v20120522-1813
-product
org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
256M
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Dhelp.lucene.tokenizer=standard
-Xms40m
-Xmx512m
Anyone have any suggestions? I tried changing:
-Dosgi.requiredJavaVersion=1.6
-Xms512m
to
-Dosgi.requiredJavaVersion=1.7
-Xms1024m
with no luck

One reason is that your -Xms parameter (initial heap size) defines a larger heap size than the -Xmx parameter (maximum heap size), you should fix it. If after fixing it the problem remains try to revert to the original eclipse.ini file and apply the parameters one by one to see which is the other 'wrong one'.

You seem to have changed a lot of things in one go.
As a general strategy, I would suggest reverting to the original settings, and then make the changes one at a time, starting with the most important one ... or the one that is most likely to work.

Regarding slow performance of eclipse

I am using eclipse 3.7 indigo , the issue that I am facing is when I start my eclipse my machine gets too slow even the eclipse get hang some times in between , the settings of my eclipse.ini file is below..
-startup
plugins/org.eclipse.equinox.launcher_1.2.0.v20110502.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.100.v20110502
-product
org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
256M
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xms40m
-Xmx512m
please advise how to overcome from this..!!

Change this values to the higher ones:
--launcher.XXMaxPermSize 256m
-Xms40m
-Xmx512m

Perhaps this will help? I mean, I don't know the specs of the machine you're on, but this is nice on less powerful machines.
What are the best JVM settings for Eclipse?

Check with the eclipse.ini file and add the following java parameters and values.
-vmargs
-Dosgi.requiredJavaVersion=1.6
-Xmn128m
-Xms1024m
-Xmx1024m
-Xss2m
-XX:PermSize=256m
-XX:MaxPermSize=256m
-XX:+UseParallelGC
This worked for me. Might help.

Eclipse fails to create JVM after defining --launcher.XXMaxPermSize in eclipse.ini

I was using Eclipse and I got java.lang.OutOfMemoryError: PermGen space error. In Eclipse FAQ it says I should add these lines to eclipse.ini:
--launcher.XXMaxPermSize
[xxx]m
where xxx is the memory size I want to use (I tried 256). But after I do this I get Failed to create Java Virtual Machine error on Eclipse startup. What should I do to get it working?
My eclipse.ini file before editing:
-startup
plugins/org.eclipse.equinox.launcher_1.2.0.v20110502.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.100.v20110502
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
--launcher.defaultAction
openFile
-vmargs
-Xms40m
-Xmx1024m

You need to adjust your eclipse.ini to include the argument -XX:MaxPermSize + specify a specific JVM for Eclipse to run on by adding the -vm option just before the -vmargs option. Ex:
-vm
C:\Java\JDK\1.6\bin\javaw.exe (The exact path to javaw.exe)
-vmargs
-Xms40m
-Xmx1024m
The -vm option and its value (the path) must be on separate lines.
A complete example:
-startup
plugins/org.eclipse.equinox.launcher_1.2.0.v20110502.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.100.v20110502
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vm
C:\Java\JDK\1.6\bin\javaw.exe
-vmargs
-XX:MaxPermSize=256m
-Xms40m
-Xmx768m

Your eclipse.ini should be:
-XX:MaxPermSize=256m