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why more redologs generated ?? [message #176933] Mon, 12 June 2006 01:36 Go to next message
tridentadm
Messages: 142
Registered: March 2006
Senior Member
during online tablespace backup why more redologs are generated ??

what exactly takes place then ??

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Re: why more redologs generated ?? [message #176950 is a reply to message #176933] Mon, 12 June 2006 03:24 Go to previous messageGo to next message
aciolac
Messages: 242
Registered: February 2006
Senior Member
If to saw very short - when you make online backup of tablespace, all changed blocks are writing in archive log instead of tablespace. That's why not recommend to perform online backup during big change activity in database.

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Re: why more redologs generated ?? [message #176958 is a reply to message #176950] Mon, 12 June 2006 03:54 Go to previous messageGo to next message
Frank Naude
Messages: 4579
Registered: April 1998
Senior Member
That is not entirely true. For more info, see http://www.orafaq.com/faq/does_oracle_write_to_data_files_in_begin_hot_backup_mode

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Re: why more redologs generated ?? [message #176964 is a reply to message #176933] Mon, 12 June 2006 04:22 Go to previous message
Mahesh Rajendran
Messages: 10707
Registered: March 2002
Location: oracleDocoVille
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Just to add Frank's response.
http://www.orafaq.com/forum/m/149622/42800/?srch=Tim+Gorman#msg_149622

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