Seema,

Yes, it will use a rollback segment.  It has to in
order to rollback the changes should the command not
complete successfully (e.g. if there isn't enough
space in the tablespace).

HTH,

-- Anita

--- Seema Singh <[EMAIL PROTECTED]> wrote:
> Hi Gurus
> I have one question.
> Create table tbl2 as select * from tbl1;
> will above query use the rollback segment or not?
> and why?
> Thx
> -Seema
> 
>
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