Re: Delete without rollback?

pjr_at_sip.fi (Petri J. Riipinen) writes:

>Hi there.
 

>I have this one table, which I need to empty every now and then during my
>development. It's not too big, about 10000 rows. But when I do a complete
>delete (Delete * from mytable) it always fails and complains that the size of
>the rollback was exceeded (or something like that). Ok, I can understand that.
>But I wouldn't want to increase the size of the rollback-segment as this
>delete operation is not going to be used in production, just for my testing.
 

>So, is there a way to do a "permanent" delete at once, so that Oracle wouldn't
>use any space in the rollback-segment?
 

>Peace,
> Petri

Petri,

Using the "TRUNCATE" command will bypass the rollback segments when deleting records. For example, "TRUNCATE TABLE too_many_rows;" will delete all records.
Note that no triggers that may exist get fired. Also, do not do this to a table that is a master snapshot.

Good luck,

-Ari Kaplan
Independent Oracle DBA Consultant

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