RE: hot backup mode

From: Fink, Dan <Dan.Fink_at_mdx.com>
Date: Mon, 14 Oct 2002 07:29:11 -0800
Message-ID: <F001.004E80D7.20021014072911@fatcity.com>

No, it does not. Being in hot backup mode does not affect the generation of UNDO, only redo. When you modify a column, Oracle stores only the column address, operation, original data (if update or delete) and some internal information. This is the same whether the tablespace is in normal mode or hot backup.  

Dan

-----Original Message-----
Sent: Monday, October 14, 2002 8:33 AM
To: Multiple recipients of list ORACLE-L

Does the unmodified image of the datafile block get recorded in the redo log as well as the modified image when a tablespace is in hot backup mode?

I'm being told that it does, but that is not my understanding. Is this documented somewhere?

Matt

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Author: Fink, Dan
  INET: Dan.Fink_at_mdx.com

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