RE: MV refresh
From: Allen, Brandon <Brandon.Allen_at_OneNeck.com>
Date: Thu, 27 Aug 2009 13:58:36 -0700
Message-ID: <64BAF54438380142A0BF94A23224A31E11294D7A06_at_ONEWS06.oneneck.corp>
Not positive off the top of my head, but I think it's possible for that to happen if you don't use the atomic refresh setting because then it does a truncate first, which is a DDL transaction, followed by the inserts, however if you use the atomic refresh, then it will keep the whole refresh together as a single transaction, which means it uses DELETE instead of TRUNCATE, so it's slower and generates significantly more redo. If I recall correctly there was also a change related to this functionality between 9i and 10g, but I forget the details - just search for atomic refresh on Metalink and I'm sure you'll find it. Regarding capturing the error message, just redirect the output of your refresh script to a log file and then run a check on that log file to see if there are errors or not.
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Date: Thu, 27 Aug 2009 13:58:36 -0700
Message-ID: <64BAF54438380142A0BF94A23224A31E11294D7A06_at_ONEWS06.oneneck.corp>
Not positive off the top of my head, but I think it's possible for that to happen if you don't use the atomic refresh setting because then it does a truncate first, which is a DDL transaction, followed by the inserts, however if you use the atomic refresh, then it will keep the whole refresh together as a single transaction, which means it uses DELETE instead of TRUNCATE, so it's slower and generates significantly more redo. If I recall correctly there was also a change related to this functionality between 9i and 10g, but I forget the details - just search for atomic refresh on Metalink and I'm sure you'll find it. Regarding capturing the error message, just redirect the output of your refresh script to a log file and then run a check on that log file to see if there are errors or not.
Regards,
Brandon
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-- http://www.freelists.org/webpage/oracle-lReceived on Thu Aug 27 2009 - 15:58:36 CDT