Re: Shrink Table: IEstimating Rollback Space

Thanks for the pointer.  I was planning on shrinking the indexes separately.
It doesn't look like the shrink will be possible.

Ian


On 10/17/08 7:47 AM, "Hemant K Chitale" <hkchital@xxxxxxxxxxxxxx> wrote:

> 
> Undo (and Redo !) will be quite noticeable-- more so as you have
> indexes on the table.
> 
> A SHRINK operates as a DELETE (which will be the very significant
> portion of Undo)  *and*  an INSERT.
> Both operations also have to update Indexes .
> The Indexes will not shrink until and unless you do a COALESCE or REBUILD.
> 
> See MetaLink Note#577375.1 and Bug# 3888229.
> 
> Hemant K Chitale
> 
> At 04:52 AM Friday, Ian  MacGregor wrote:
>> I have a 450 GB table with 150 GB of free space.  I'd like to shrink the
>> table, but I'm not sure how much rollback will be needed.  Is there a
>> formula?  One that accounts for the indexes as well?
>> 
>> Ian MacGregor
>> SLAC National Accelerator Laboratory
>> 
>> --
>> http://www.freelists.org/webpage/oracle-l
> 
> 
> Hemant K Chitale
> http://hemantoracledba.blogspot.com
> 
> "A 'No' uttered from the deepest conviction is better than a 'Yes'
> merely uttered to please, or worse, to avoid trouble."
> Mohandas Gandhi Quotes
> :  http://www.brainyquote.com/quotes/authors/m/mohandas_gandhi.html
> 

--
http://www.freelists.org/webpage/oracle-l


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