system trigger

[thirtharih]

hi,
i create the system trigger on logon, the trigger updat the data base, the problem if i log on , the oracle error :system trigger update or delete on database , however the user create with grant to create anther user, DDL and MDL

[Raminder]

I think your question is not very clear, that's why you have'nt got a response yet.
Will you elaborate your problem?
If possible, give out the trigger code so that someone here can help you.

[Shestakov]

If this is ON-LOGON trigger in Oracle Forms?

If yes, then you can't execute any DB command before you not logon to DB.
ON-LOGON - reject standard ON-LOGON Forms procedure and you should logon to DB manually.