Has anyone seen this error before? I am using 8.1.7.

SQL> CREATE OR REPLACE TRIGGER logon_trig
2 AFTER logon ON SCHEMA
3 BEGIN
4 INSERT INTO log_trig_table (user_id, log_date, action)
5 VALUES (user, sysdate, 'Logging on");
6 END;
7 /
AFTER logon ON SCHEMA
*
ERROR at line 2:
ORA-00406: COMPATIBLE parameter needs to be 8.1.0.0.0 or greater

Thank you in advance!!