Ora-04092 and PL/SQL

Question

Hi,
I've a table and an attached trigger calling a PL/SQL procedure.
The procedure creates a table, a trigger on that table and some VPD policies using the EXECUTE IMMEDIATE function.
Each time I enter a new row in the table I get the ORA-04092 error.
I've check all my codes and there is no commit writen somewhere. I strongly suspect that the EXECUTE IMMEDIATE is the problem.
How can I bypass the problem?
Cheers,
Sebastien

Answer 1

you need another way to implement this.
A trigger fires when you do DML on a table (dependent on the type of trigger), not at COMMIT-time.
What about this scenario:
1) users adds record to table
2) causing the trigger to fire
3) table, trigger and VPD are created
4) user rollback the action
result: a table, trigger and VPD without a record in the table. And I assume this is not what you want.
What you could do, is create a job which creates the table, trigger and VPD. Submit the job from the trigger.
Jobs will only run when the user commits, when the user rolls back the transaction, the job automatically rolls back as well.
Here is a blog on "transaction dependent webservice invocation", the basic idea is as I described above.
http://technology.amis.nl/blog/1604/transaction-dependent-webservice-invocationor-how-to-call-a-webservice-from-a-database-trigger-and-make-the-call-part-of-the-transaction