DROP DB Link within PL/SQL proc.

Question

Hi,
In a PL/SQL procedure and I have to delete and recreate a DB Link within a cursor. The DB Link has always the same name but the definition changes depending of some parameters. If I add DBMS_SESSION.CLOSE_DATABASE_LINK(my_dblink) and EXECUTE IMMEDIATE 'DROP DATABASE LINK my_dblink', I got this error message ORA-00439: feature not enabled: Enterprise User Security. If I don't use DBMS... I got ORA-02011: duplicate database link name. So, it seems I'm unable to delete and recreate a DB Link within my cursor. Any idea what's wrong?
Thank you.

Answer 1

This is the part not working :
LOOP
FETCH cur_modele_abc INTO v_no_centre, v_modele;
EXIT WHEN cur_modele_abc%NOTFOUND;
BEGIN
--DBMS_SESSION.CLOSE_DATABASE_LINK('MY_DB_LINK');
EXECUTE IMMEDIATE 'DROP DATABASE LINK MY_DB_LINK';
COMMIT;
EXCEPTION WHEN OTHERS THEN --> Si dblink était inexistant.
v_string := 'CREATE DATABASE LINK MY_DB_LINK'
||' CONNECT TO '|| v_modele ||' IDENTIFIED BY '|| v_modele ||
' USING ''ABC_NATREL''';
END;
v_string := 'CREATE DATABASE LINK MY_DB_LINK'
||' CONNECT TO '|| v_modele ||' IDENTIFIED BY '|| v_modele ||
' USING ''ABC_NATREL''';
EXECUTE IMMEDIATE v_string;
ssdw_abc_stage_production_map.main(v_no_centre, p_job => p_jobname);
     COMMIT;
     --execute immediate 'ALTER SESSION CLOSE DATABASE LINK MY_DB_LINK';
     --DBMS_SESSION.CLOSE_DATABASE_LINK('MY_DB_LINK');
SELECT TO_CHAR(SYSDATE, 'DD-MON-YYYY HH:MI:SS') INTO v_date FROM dual;
abc_courriel('SSDW_STAGE Modèle ABC '||v_date, 'Modèle chargé : '||v_modele||' - '||v_no_centre);
END LOOP;
...