If you're writing Java programs and using databases on Solaris, you might want to participate and contribute to the discussion forum at OpenSolaris' Databases Community.
There, you can find anything from MySQL case reviews to invitation to technical speakers, not to mention minute questions regarding configuration and performance.
Sun has just acquired innotek: "Europe's leading high-tech software company specializing in PC virtualization technology and operating system design."
You can check out innotek's VirtualBox Open Source Edition at virtualbox.org.
You can also read Sun's announcement, and here's an independent review of the innotek acquisition.
In case you do a web search and run into other innoteks...