This download does not include the JDK. This version requires a Java 8 JDK.
To run SQL Developer:
- Ensure you have a JDK installed, if not, download here and install first - Download the file above - Extract sqldeveloper.zip to a FRESH directory, do not put down over an existing copy of SQL Developer - Browse to new directory and run sqldeveloper.exe - If a valid Java installation can't be found, you will be prompted to enter the path to the Java JDK home. This only occurs the first time you launch SQL Developer. It should be similar to C:\Program Files\Java\jdk1.8.0_45