SQL Developer 3 - Connecting to SQL Server Using Third Party Drivers
Here's a Quick How To Connect SQL Devleoper 3 to SQL Server or MySQL Note that you can use "Check For Updates" to locate the available drivers. Click Help->Check For Updates Then check the boxes to enable Oracle Extensions and Third Party SQL Devleoper Extensions In the list scroll down to JTDS JDBC Driver 11.1.58.17 or directly download the JTDS JDBC Driver Restart SQL Developer And then Click Tools->Preferences->Database->Third Party Drivers Add the JTDS driver. Now if you get a message that says java.sql.SQLException: I/O Error: SSO Failed: Native SSPI library not loaded. You are missing a DLL. Go to SourceForge and download jtds-version-dist.zip and find the missing DLL called ntlmauth.dll Put that anywhere in your path and restart SQL Developer.