Sometimes the JDBC driver returns a schema name multiple times in a catalog. For certain JDBC clients like Squirrel or DB Visualizer, when exact names of catalogs and/or schemas are used more than once in different places in a single TDV service the JDBC driver returns the name multiple times.

This occurs when you a virtual database has one or more catalogs that contain a schema with the exact same name. The number of times the identical schema is returned depends on how many catalogs it has been created under.

This is a limitation associated with the JDBC clients.