AS/400 JDBC Access with Rational Application Developer

Get the ‚AS/400 Toolbox for Java‘ or the Open Source Version ‚JTOpen‘.
Locate the ‚jt400.jar‘ file. This archive contains the JDBC-Driver (‚com.ibm.as400.access.AS400JDBCDriver‘).
Use the library name where the tables (PF,physical files) reside as schema filter.
‚Schema LIKE libraryname‚ (Disable the other schema filter).