Dear developers, I created a user, schema and I set the new schema for the new user: CREATE SCHEMA "test" AUTHORIZATION "public"; CREATE USER "monet_test" WITH PASSWORD 'pass_test' NAME 'TEST USER' SCHEMA "sys"; ALTER USER "monet_test" SET SCHEMA "test"; Then I connect the new user with a mclient: [goncalve@amelia Dependencies]$ mclient -umonet_test -Ppass_test MAPI = monet_test@localhost:50000 ACTION= mapi_start_talking ERROR = !InvalidCredentialsException:checkCredentials:Invalid credentials for user 'monet_test' [goncalve@amelia Dependencies]$ What is the problem with the user creation? The authorization for the schema is public this means that any user can use the schema "test". I am right or wrong? I will appreciate some help. Best Regards, Romulo Goncalves