ORA-04021 seen in tracefile
This question is not about the "ORA-04021" itself, but about the format of this message.
Normally alert.log-errormessages look like this: ORA-xxxxx: <short error text>
This kind of ORA-04021 message has no colon and no <short error text>, only the name of the trace file, which containes the "ORA-04021".
What, if my alert log monitoring would only cover ORA-messages with colon?
Is my monitoring missing out on anything important?
Or is it reasonably safe to ignore this "seen in tracefile" messages?
(I think it's more a question of philosophy. I look forward to your opinions.)