The Oracle SQL developer is NOT supported on 64 bits JDK.
Your PC environment may be :
Database : Oracle 11g / OS Platform : Windows 7 Ultimate 64
bits / JDK : 1.6 .0_24, 64 bits
So it will give you an error when trying to open SQL
Developer.
When you click on the Oracle SQL developer, it prompts you
to give the JDK folder location. However, after you specified the correct JDK
folder, it prompts you following error dialog box :
Unable to find Java Virtual Machine. To point to a location
of a Java Virtual Machine....
Solution
To solve it, install a 32 bits / x86 JDK and update your SQL
developer config file, so that it points to the 32 bits JDK.
Edit the “sqldeveloper.conf“, which can be found under {ORACLE_HOME}\sqldeveloper\sqldeveloper\bin\sqldeveloper.conf,
make sure “SetJavaHome” is pointing to your 32 bits JDK.
