My problem is that I want to restrict the access on a table to a user
under certain condition.
I want this user to be able to update the table in the case where
a table's field called TYPE is not equal to 'S'. Otherwise, if ='S',
then Oracle should send a error message saying that the update
of the table is impossible.
To do that, I have created a BEFORE trigger associated with the
table that is fired for each update of table.
If the condition is true, i.e. TYPE = 'S', then I issue the following
error message with the function:
raise_application_error(-20501, 'Update unavailable')
The problem is there. The message appears on the screen, but with
other messages from Oracle saying that the trigger has
failed.
ORACLE - 20501 'Update unavailable'
ORACLE - XXXXX 'ERROR line 1'
ORACLE - XXXXX 'Error in the execution of trigger'
How can I avoid these last two messages from within a trigger?
Or, is there any other way of stopping an update from within a
trigger?
The only way that I've found is with trigger.
Thanks!
Martin Miron
e-mail: Martin.Miron_at_dmr.ca
