Hi Azlz
source: http://scn.sap.com/thread/3179910
Please update with output:
java -version
Did you restart studio as Administrator?
In your case Eclipse workspace cannot be used => Run the following steps:
Save the following file:
<HOME>/<user>/sdb/DatabaseStudio/.metadata
Delete the folder <HOME>/<user>/sdb/DatabaseStudio.
Restore the file :
<HOME>/<user>/sdb/DatabaseStudio/.metadata
Restart the database studio as Administrator.
Best Regards
Marius