🚀 go-pugleaf

I'm looking for information about the error code returned by 
DBDatabase's delegate "db:notificationFrom:message:code:".  

I have a test database running under oracle 6.0.30.3.1 under
NextStep 3.0.  It has 3 columns, (firstname char(20), 
lastname char(20), key number not null), and a unique index
on column "key".  I have three text windows to see the results 
of database operations that the DBDatabase object makes 
available through it's delegates, db:log:, db:notificatioFrom:message:code:,
and db:willEvaluateString:usingBinder:.  Everything works great, but 
there's an inconsistency in the "code" variable returned by 
db:notificationFrom:message:code:.  

If I attempt to insert a row of nulls into the database, db:notificationFrom
shows (among other things):
"notification:(code -1400) Can't execute oracle cursor.
	ORA-01400:mandatory (NOT NULL) column is missing or NULL during
insert"

This seems reasonable.  Other tests return reasonable codes, always
with the "code" variable matching the "ORA-xxxxx" message.

However, attempting to insert a row with a duplicate key value returns
two different values.  The oracle error message is "ORA-00001", 
duplicate key in index, which is correct, but code comes through
as -9.  What's going on?  If the error code is not what Oracle returns,
where is the definition of these codes?

I called Oracle Tech support, and they tell me that -9 is the code
that Oracle Version 2 used for this condition.  This code is 
still available in version 6 OCI libraries, for backwards compatibility.
Is it possible that this variable is being used by mistake in the 
Oracle DBKit adaptor?

Thanks,
Mike Bray  mrb@earth.wustl.edu