CREATE OR REPLACE TRIGGER logon_optimizer after logon on database begin if user in ('SCOTT','JACK','BOB') then execute immediate 'alter session set NLS_LANGUAGE="GERMAN"'; execute immediate 'alter session set "_optimizer_unnest_disjunctive_subq"= FALSE'; end if; end; /
Test to verify that it Works:
Connect scott/tiger set lines 200 col parameter format a30 col value format a40 select * from nls_session_parameters; PARAMETER VALUE ------------------------------ ----------- NLS_LANGUAGE GERMAN NLS_TERRITORY NORWAY
Now generate an error:
select * from xxx * ERROR at line 1: ORA-00942: Tabelle oder View nicht vorhanden
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