How to disabled all constraints when importing data (urgent)

[Paul]

Hi:

I am not sure whether somebody can sort it out for me.

I am doing data transfer from one oracle database to another. Both of
them has the same structure (like same tables etc).the only thing i
need to do is data transfering.

i designed a vb program to do this, What i am worrying is when I run
this program it might fire some constrants. Anybody can give me some
ideas on how to avoid these constraints when data import?? I have to
disable all the constrainsts first or i can do it in another way?

Millions thanks in advance!
Paul

[Guido Konsolke]

Re: How to disabled all constraints when importing data (urgent)

"Paul" <jiacheng_work@ yahoo.comwrote in
news:f294310c.0 309080223.62b22 c2a@posting.goo gle.com...

Hi:
>
I am not sure whether somebody can sort it out for me.
>
I am doing data transfer from one oracle database to another. Both

of

them has the same structure (like same tables etc).the only thing i
need to do is data transfering.
>
i designed a vb program to do this, What i am worrying is when I run
this program it might fire some constrants. Anybody can give me some
ideas on how to avoid these constraints when data import?? I have to
disable all the constrainsts first or i can do it in another way?
>
Millions thanks in advance!
Paul

Hi Paul,

are you really sure using VB is the right thing
for this task? It smells like imp / exp would be
the better way. Anyway: you can defer the column
constraints with the 'set constraints all deferred'
statement before starting the data insert. Then the
constraints will come into play at commit time.
If the constraints aren't deferable, you have to use
some pl/sql to loop through user_constraint s to get
the names and issue dynamic sql statements which disable
those constraints.

hth,
Guido

[Frans H.]

Re: How to disabled all constraints when importing data (urgent)

"Guido Konsolke" <Guido.Konsolke @triaton.comwro te in message news:<106301863 7.40577@news.th yssen.com>...

"Paul" <jiacheng_work@ yahoo.comwrote in
news:f294310c.0 309080223.62b22 c2a@posting.goo gle.com...

Hi:

I am not sure whether somebody can sort it out for me.

I am doing data transfer from one oracle database to another. Both

of

them has the same structure (like same tables etc).the only thing i
need to do is data transfering.

i designed a vb program to do this, What i am worrying is when I run
this program it might fire some constrants. Anybody can give me some
ideas on how to avoid these constraints when data import?? I have to
disable all the constrainsts first or i can do it in another way?

Millions thanks in advance!
Paul

>
Hi Paul,
>
are you really sure using VB is the right thing
for this task? It smells like imp / exp would be
the better way. Anyway: you can defer the column
constraints with the 'set constraints all deferred'
statement before starting the data insert. Then the
constraints will come into play at commit time.
If the constraints aren't deferable, you have to use
some pl/sql to loop through user_constraint s to get
the names and issue dynamic sql statements which disable
those constraints.
>
hth,
Guido

Paul,
also check the table USER_CONS_COLUM NS

Frans H.