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Don Burleson Blog 







ORA-04084: cannot change NEW values for this trigger type

Expert Oracle Database Tips by Donald BurlesonJanuary 17, 2015

ORA-04084: cannot change NEW values for this trigger type

Question: I am running a trigger, and I get this error:  

ORA-04084: cannot change NEW values for this trigger type  

What causes the ORA-04084 error, and how do I prevent this error?

Answer:  Start by using the oerr utility to look-up the error:

ORA-04084: cannot change NEW values for this trigger type

Cause: New trigger variables can only be changed in before row insert or update triggers.

Action: Change the trigger type or remove the variable reference.

ORA-04084 is typically associated with an "after" row INSERT or UPDATE trigger.  

The ORA-04084 error is caused because the value is already in the table; therefore, it's not new anymore.

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