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Re:Your views on Quest - Shareplex

From: Jeremiah Wilton <jwilton_at_speakeasy.net>
Date: Tue, 29 May 2001 12:53:24 -0700
Message-ID: <F001.0031295D.20010529124445@fatcity.com>

Here's a theory: Eyal is referring to chained and migrated rows. With media recovery, the recovering instance infers where the migrated or chained data is located, becuase it is an exact physical copy. Since the SharePlex replicated instance is not an exact physical copy of the primary, it must go back to the source database to figure out which blocks' changes represent changes for a block that SharePlex already knows about.

--
Jeremiah Wilton
http://www.speakeasy.net/~jwilton

On Tue, 29 May 2001, Jared Still wrote:

>
> So how does a standby database work if the logs don't contain
> complete transactions?
>
> On Tuesday 29 May 2001 12:01, Jim Hawkins wrote:
>
> From note on MetaLink:
>
> > 1) There is not sufficient information in the logs to logically
> > replicate transactions, so the data applied to the destination system
> > may be different from the primary, and therefore inaccurate.
-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Jeremiah Wilton INET: jwilton_at_speakeasy.net Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
Received on Tue May 29 2001 - 14:53:24 CDT

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