How can you maximize total number of users and licenses IBM® Rational® Team Concert (RTC) supports?
You have the RTC Standard Edition installed, but only 10 developer and contributor licenses are assigned. The RTC Standard edition has a limit of 250.
If you are using Derby as the database system, RTC only supports up to 10 users. In order to maximize total number of users and licenses RTC Standard Edition supports, you need to configure IBM DB2®, IBM DB2 Express or Oracle as the database system for your Standard RTC Edition.
Here are License Key Management sample screenshots for DB2 Express and Derby configuration: