Hi!
What version of Oracle client do U have, and which wersion of oracle are you connected to.
Do you have server output turned on?
Try following
Turn server output on than,
When I use DBMS_OUTPUT in sql plus then it works
Not from within SQL Navigator. If I turn serveroutput off in SQL Navigator than (of course) I don’t get the error 22057 in my output window.
Could you please send us the script that causes this error. So far I couldn’t reproduce and have never seen this error in 10 years, and have no idea what could be causing it.