Re: Question about redo size in dump file and view

From: Jonathan Lewis <jonathan_at_jlcomp.demon.co.uk>
Date: Tue, 9 Jun 2009 20:12:17 +0100
Message-ID: <BdGdndB0ZbOFKbPXnZ2dnUVZ8uydnZ2d_at_bt.com>


"joel garry" <joel-garry_at_home.com> wrote in message news:d71b37dc-19fb-44f8-967c-ca2870eda8a6_at_j32g2000yqh.googlegroups.com...

>>>

The TYP:2 (in CHANGE #1 TYP:2 CLS: 1 AFN:4 DBA:0x0100090f OBJ:70582 SCN: ...) means delayed logging?

If I'm understanding this (unlikely :-) the difference would be previous testing on the block.

>>>

It's possible - it's a detail I haven't investigated. I did two inserts one after the other in the same transaction on the same block, and the redo record for the second one was TYP; 0, so you could be right.

The redo record would have to hold the previous contents of the ITL slot that this transaction had take over, so there would have to be a flag to say that this information was in the record.

-- 
Regards

Jonathan Lewis
http://jonathanlewis.wordpress.com

Author: Cost Based Oracle: Fundamentals
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Received on Tue Jun 09 2009 - 14:12:17 CDT

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