You can use truncate command to delete all data from that tables and then 
IMP.Hope this will help u .
-Seema


>From: [EMAIL PROTECTED]
>Reply-To: [EMAIL PROTECTED]
>To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
>Subject: RE: Exp Imp  Overwirte posiible or not?
>Date: Tue, 27 Mar 2001 10:50:43 -0800
>
>IIRC, there is a flag for import "destroy=y" to do what you want.  This is
>very dangerous and you should research all the implications before trying
>it.  If you don't have the docs, try http://technet.oracle.com and read up
>on the import options.
>
>Scott Shafer
>San Antonio, TX
>210-581-6217
>
> > -----Original Message-----
> > From:       [EMAIL PROTECTED] [SMTP:[EMAIL PROTECTED]]
> > Sent:       Tuesday, March 27, 2001 1:46 AM
> > To: Multiple recipients of list ORACLE-L
> > Subject:    Exp Imp  Overwirte posiible or not?
> >
> > Hi All,
> >  I want to import data from a user dump file but when i import data, i
> > want
> > to overwrite the existing data . Normally imp utility append data to
> > existing rows. Requirement of application is such  that we need to
> > overwrite existing data  without  dropping objects and its dependent
> > objects. Is it possible with exp , imp utilities or  i have to delete 
>data
> > first and then import  using imp utility.
> > Is there any other possibility...
> > Environment Oracle8i, Windows NT4
> > TIA
> >
> > Azhar Siddiq
> >
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