Setting up the ASCII Adapter Client on the Administration Server
The standard Oracle port that will be proposed is 1521. Often this will be different for R/3. Configure the port to certain common values like 1522 or 1527. After completion of the definition of a database connection, you can log on to the RDBMS for test purposes. There, enter the database user / password that also will be used by the R/3 kernel in order to access the RDBMS.