It might be a good idea to show something like:
"Searching for datasources in Hibernate configuration..."
"Searching for datasources in Spring configuration..."
(or something similar)

An unsuspecting used clicking on "import" may have to wait 20 seconds or so (like in my case) - so at least describe what the process is doing.

In addition, if the number of files to be scanned is known in advance,

• a more deterministic progress bar could be shown
• more descriptive progress messages could be shown (like "scanning foo.xml...")