I have been using bleeding edge Eclipse distributions with OS X Tiger and my Java is set for 1.5. Problems with Hibernate 3, etc., so decided to try MyEclipse.
When I use latest MyEclipse for 3.1, with 3.1m7, I can set up the JDBC connection, establish a connection, see the schema, but when I try to set up a new SQL Editor, only the database connection is available as a drop down (no schema selection), and there are no icons on the toolbar.
In addition, if I select a table and select the tab for table information, the tabFolder is not expanded properly (you can barely see the first row, which appears properly populated with information about the table).
Deciding to try to isolate the issue, I then installed Eclipse 3.02 and tried the 4.0 milestone; this failed (details unimportant and forgotten). Uninstalled the 4.0 milestone through the feature management, and then downloaded the latest myEclipse build for Eclipse 3.02, installed it, and again, I can establish a connection with my database. But the Run icon never enables. The table information, however, works.
I am running the JRE 1.5 on OS X Tiger. Is this a problem?