RE: Re[2]: What Sort of Privilege?

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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