I have Oracle SQL Developer 3.2 installed and the jtds-1.2.6.jar installed. I was able to successfully connect to SQL Server databases in the past, but recently the Retrieve Database button has disappeared for my SQL Server connections as well as when I try to set up a new connection. Under the Sybase tab, the button is visble but not under the SQL Server tab. Am I missing a configuration setting somewhere?
I just downloaded the 1.2.6 jar file and it works for me. The only step I did was to add the JAR file to the Database => Third Party JDBC Drivers preference and the button isn't greyed out. did you do any additional step?