It seems there is a bug in BEA Workshop Studio 3.2.1 and 3.3.
If you're running Workshop on top of SUN JRE 1.5.0_10 or 1.6.0 rc, the DbXplorer view in the Workshop perspective is not working properly, you can't add database connection (the textfield, which is besides the "Connection Name" label, can't obtain the cursor) as shown in the figure below.
However,with SUN JRE 1.5.0_09, everything is fine, which can obtain from the following link.
http://javashoplm.sun.com/ECom/docs/Welcome.jsp?StoreId=22&PartDetailId=jdk-1.5.0_09-oth-JPR&SiteId=JSC&TransactionId=noreg