Simulating ORA-XXXX errors manually in database alert log

Generate ORA-XXX error manually in DB alert log 

login as sysdba


SQL> exec dbms_system.ksdwrt(2,'ORA-00600: This is a test error message for monitoring and can be ignored.');

PL/SQL procedure successfully completed.

SQL>

In Alert_india.log

*************************************************************************
2020-05-26 13:45:21.335000 +00:00
ORA-00600: This is a test error message for monitoring and can be ignored.
2020-05-26 13:45:25.125000 +00:00
ORA-00600: This is a test error message for monitoring and can be ignored.