RE: Re[2]: What Sort of Privilege?
- From: "Goulet, Dick" <DGoulet@xxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 24 Aug 2004 09:12:00 -0400
Tom,
Sorry, but you are wrong. I prefer the many schema method as well.
Dick Goulet
Senior Oracle DBA
Oracle Certified 8i DBA
-----Original Message-----
From: Mercadante, Thomas F [mailto:thomas.mercadante@xxxxxxxxxxxxxxxxx]
Sent: Tuesday, August 24, 2004 8:21 AM
To: 'oracle-l@xxxxxxxxxxxxx'
Subject: RE: Re[2]: What Sort of Privilege?
Jo,
Well, The Oracle Apps applications have many schema's - much like what =
you
described.
I'm guessing that the majority of home-grown applications have only one
schema for all of the tables. I could be wrong. In my view, it is =
easier
to manage. Everything is in one place. It prevents you from creating =
two
database objects with the same name. Managing security is easier - =
again,
you can issue all your grants from one schema, rather than needing to =
keep
re-logging in.
Maybe it's just me!
Tom Mercadante
Oracle Certified Professional
-----Original Message-----
From: jo_holvoet@xxxxxxxx [mailto:jo_holvoet@xxxxxxxx]=20
Sent: Tuesday, August 24, 2004 8:13 AM
To: oracle-l@xxxxxxxxxxxxx
Cc: 'oracle-l@xxxxxxxxxxxxx'; oracle-l-bounce@xxxxxxxxxxxxx
Subject: RE: Re[2]: What Sort of Privilege?
Hi Tom,
we (well, it was in place before I got here, but anyway) basically have=20
one schema per application. We also have one schema which houses =
"common"=20
data, i.e. data used in many different places/apps; e.g. employees,=20
customers, products, plants, .... So we have many cross-schema FKs to =
the=20
"common" data but outside that everything is pretty well partitioned.=20
Maybe that's why I've never really had any problems with it.
Is having what is basically a one-schema database common practice ?
mvg/regards
Jo
"Mercadante, Thomas F" <thomas.mercadante@xxxxxxxxxxxxxxxxx>
Sent by: oracle-l-bounce@xxxxxxxxxxxxx
08/24/2004 14:03
Please respond to oracle-l
=20
To: "'oracle-l@xxxxxxxxxxxxx'" <oracle-l@xxxxxxxxxxxxx>
cc:=20
Subject: RE: Re[2]: What Sort of Privilege?
Jo,
I guess I should clarify.
If you made a consious decision to maintain multiple schema's within =
your
database, then it is your choice.
I prefer one schema holding all of the database tables that make up the
corporate-wide application.
Tom Mercadante
Oracle Certified Professional
-----Original Message-----
From: jo_holvoet@xxxxxxxx [mailto:jo_holvoet@xxxxxxxx]=20
Sent: Tuesday, August 24, 2004 7:58 AM
To: oracle-l@xxxxxxxxxxxxx
Cc: 'oracle-l@xxxxxxxxxxxxx'; oracle-l-bounce@xxxxxxxxxxxxx
Subject: RE: Re[2]: What Sort of Privilege?
Not sure about that. We have for example an employee table that is=20
referenced just about everywhere (e.g. which salesperson is responsible=20
for this customer, which employee registered for this training course,=20
which operator filed this incident report, ...). These are all different =
apps/schemas referencing this table so I don't see how we can avoid=20
cross-schema FKs.
mvg/regards
Jo
"Mercadante, Thomas F" <thomas.mercadante@xxxxxxxxxxxxxxxxx>
Sent by: oracle-l-bounce@xxxxxxxxxxxxx
08/24/2004 13:49
Please respond to oracle-l
=20
To: "'oracle-l@xxxxxxxxxxxxx'" <oracle-l@xxxxxxxxxxxxx>
cc:=20
Subject: RE: Re[2]: What Sort of Privilege?
Peter,
I totally agree with you. Allowing Fk references from outside of the=20
schema
is inviting confusion, duplication and disaster. There is really no =
good
reason for it.
Tom Mercadante
Oracle Certified Professional
-----Original Message-----
From: Peter Robson [mailto:pgro@xxxxxxxxx]=20
Sent: Tuesday, August 24, 2004 4:57 AM
To: Jackie Brock
Cc: oracle-l@xxxxxxxxxxxxx
Subject: Re[2]: What Sort of Privilege?
Whoa there everybody!
While the answer is quite correct, of course (I read the FM years ago),=20
what
has not been raised is the danger of allowing reference to multiply
unhindered across numerous schemas.
Be very careful if you choose to do this, otherwise, without a little=20
care,
you may manage to lock your entire database solid with conflicting FKs!
We did, learned our lesson, and now reference is ONLY permitted within =
the
one corporate schema.
peter
edinburgh
.............
JB> references
JB> All,
JB> what kind of privilege new for creating a FK constraint which=20
JB> reference table belongs to another schema.
JB> ALTER TABLE PAM.table1
JB> ADD CONSTRAINT FKCONS1
JB> FOREIGN KEY (ID)
JB> REFERENCES schema1.table2 (ID2);
JB> I have grant select,insert,update,delete for table2 BUT still I get=20
JB> insufficient privilege. any idea?
JB> Hamid Alavi
--=20
mailto:pgro@xxxxxxxxx
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