Re: DBMS_REDEF - How online is it, really?

From: Sameer Choudhari <sameer.choudhari_at_gmail.com>
Date: Wed, 12 Feb 2014 14:29:58 +1100
Message-ID: <CAL4wsdDsxdKvp3jhE_JEksn_4HMfTAR=GOyNSPv_v9Fyv8R-XQ_at_mail.gmail.com>



I used it and using this REDEFINITION feature in my current project. I have partitioned multiple tables ( sizes >100G) using DBMS_REDEFINITION

Cheers,
Sameer <http://www.choudhari.net>

On 12 February 2014 03:03, Uzzell, Stephan <SUzzell_at_micros.com> wrote:

> 11.2.0.3.7 on OEL 6, in case that matters.
>
>
>
> We've been looking into partitioning some large tables (5 trillion rows,
> 1TB) so that we can better manage them (drop old data, &c.). Right now I'd
> say dbms_redefinition may be the leading candidate, because Oracle says it
> is an online operation. I've been burned by Oracle's idea of "online"
> operations before - alter index rebuild online, if the code is optimized /
> hinted to use that index, may be online as far as Oracle is concerned, but
> it sure wasn't for the end users.
>
>
>
> So I'm wondering - has anyone used dbms_redefinition to partition large
> tables? Is it truly online? Can Oracle keep up with inserts in the meantime?
>
>
>
> We are thinking about using RAT to try to play back a typical workload,
> but before we open another can of Oracle worms, I figured a question to the
> list might be a good place to start.
>
>
>
> Thanks!
>
>
>
> *Stephan Uzzell*
>
>
>

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Received on Wed Feb 12 2014 - 04:29:58 CET

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