Re: How does dropping a partition affect the rest of the table?

Gregory,

However, if I have a locally partitioned index, the impact on indexes should be minimized. I believe that I should only have to rebuild the index on the next highest partition. The remainder of the local index partitions should be unaffected.

Am I correct in my understanding of the documentation on local index partitions?

Thanks,

Cherie

                                                                                       
                         
                    Gregory Conron                                                     
                         
                    <gconron_at_hfx.a        To:     ORACLE-L_at_fatcity.com, 
Cherie_Machler_at_gelco.com                
                    ndara.com>            cc:                                          
                         
                                          Subject:     Re: How does dropping a 
partition affect the rest of the 
                    04/13/01 05:00        table?                                       
                         
                    PM                                                                 
                         
                                                                                       
                         
                                                                                       
                         

On Fri, 13 Apr 2001, Cherie_Machler_at_gelco.com wrote:
> I've looked through the on-line documentation on dropping partitions
> but I have not seen the following question specifically addressed:
>
> How does dropping a date-range partition affect the rest of the
> table/partitions?

New data will be inserted into the next-highest partition. Current data in the
partition will be lost.

> Can I drop an unneeded partition on the fly? What is the
> effect on performance of the rest of the table? Does anything
> need to be brought offline before I drop the desired partition?

The hit will be in rebuilding the indexes. Unless you have a large number of
extents in the partition, it will drop very quickly - quick enough not to be
noticeable unless a user is running a query or transaction against the data in
the partition (the query/transaction will fail).

Cheers,
GC

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Author: 
  INET: Cherie_Machler_at_gelco.com

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