PL/SQL Developer 9.0 Beta发布，主要是增加了多个数据库连接的支持

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PL/SQL Developer 9.0 Beta

Welcome to the PL/SQL Developer 9.0 Beta. To participate in this beta you can download Beta 1 here. The beta version is time-limited until July 1, 2011 and will install in a separate directory from any previous PL/SQL Developer version that may be installed on your PC.Feedback about this beta release can be submitted on the PL/SQL Developer 9.0 Forum.

What's new in 9.0?

http://www.allroundautomations.com/plsqldev90.html