You do not provide enough details. If you followed the instructions on the following page...
it should work. Some key points to review:
1.You must have a recent 32-bit Java 7 JDK installed (not the JRE).
2. Unzip the sqldeveloper-126.96.36.199.80-no-jre.zip into an empty directory
3. Make sure no administrator has locked down your C:\User\<youruserid>\AppData\Roaming directory. It must be writable.
Hope this helps,
SQL Developer Team
FYI: I ended up with a new laptop, so a fresh install worked, however, I was never able to get v4 to install as an upgrade with v3 on the same PC, or even after deleting it.
What errors did you get with v4?
What version did you download, JDK embedded, or no? If no, what version of Java do you have on your machine?
Also frustrated here with 188.8.131.52.48 installation.
I've downloaded and installed jdk-7u55-windows-x64.exe.
Then downloaded the sqldeveloper-184.108.40.206.48-x64.zip and extracted to an empty folder on my C: drive.
Then when i run the sqldeveloper.exe is DOES NOT prompt me for the path the JAVA (what is the default path anyhow ??), and a large white screen with a short meaningless menu pops up about 10% into the load.
It hangs there..when i close this odd menu screen the sqldeveloper.exe load stops.
On a Win7 Enterprise SP1... 64bit system.
The old version of SqlDeveloper 3.2 continues to work fine, thankfully.
SQLDev in v4 auto-detects your JDK - so it should be finding your jdk7u55 install and setting that as your java home - that's why you're not getting a prompt.
What happens if you go down into the bin directory, and launch the EXE from there? You should get a cmd/shell window with more feedback - showing error messages, etc.
One other thing, check this right away - go into your appdata folder, roaming profiles, sql developer - if there's a folder there for v4, nuke it. Then try running it again.
Awesome Jeff...that was it... nuking the previous 4.0 folders seemed to do the trick !!!