Re: rebuild indexes

From: Tim Gorman <tim_at_evdbt.com>
Date: Fri, 18 Apr 2014 12:54:00 -0600
Message-ID: <535174C8.5020806_at_evdbt.com>

ALTER TABLE ... MOVE (followed by index rebuilds) is one way to do this, but what they're probably asking for is ALTER TABLE ... SHRINK, which can be done "online" and doesn't necessarily require index rebuild afterward. More info here
<http://docs.oracle.com/cd/B28359_01/server.111/b28310/schema003.htm#ADMIN10161>.

On 4/18/2014 11:37 AM, Zelli, Brian wrote:
>
> One table has 14 rows and the other has 26. They say it is causing
> performance issues……
>
> Brian
>
> *From:*Andrew Kerber [mailto:andrew.kerber_at_gmail.com]
> *Sent:* Friday, April 18, 2014 1:37 PM
> *To:* Zelli, Brian
> *Cc:* oracle-l (oracle-l_at_freelists.org)
> *Subject:* Re: rebuild indexes
>
> How big is the table? He probably wants you to shrink it by
> eliminating unused blocks. The simplest way to do that is by an alter
> table move command followed by alter index rebuild.
>
> Sent from my iPad
>
>
> On Apr 18, 2014, at 12:26 PM, "Zelli, Brian"
> <Brian.Zelli_at_RoswellPark.org <mailto:Brian.Zelli_at_RoswellPark.org>> wrote:
>
> A vendor wants me to shrink a table. I’ve never shrunk one in
> oracle. Does that delete the data out of them?
>
> And then wants me to rebuild the associated indexes. Won’t they
> be empty after you shrink them?
>
> Brian
>
>
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Received on Fri Apr 18 2014 - 20:54:00 CEST