Oracle-L: RE: Confusion why online redo logs should never be backed up.

From: <Rajesh.Rao_at_jpmchase.com>
Date: Thu, 22 May 2003 11:42:20 -0800
Message-ID: <F001.005A07FC.20030522114220@fatcity.com>

Can you think of a scenario where the backed up online redolog file will help you completely recover a database?

You dont back it up, coz u dont need it. And, as you ritely pointed out, there are pitfalls to backing it up.

Regards
Raj

                                                                                                                            
                    "Koivu, Lisa"                                                                                           
                    <Lisa.Koivu_at_Fairfieldre       To:     Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>       
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                    Sent by:                      Subject:     RE: Confusion why online redo logs should never be backed    
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                    05/22/2003 03:12 PM                                                                                     
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                    ORACLE-L

Hi Rick,

You want to rely on your os backup for backing up the online redo logs. The reason for this is, you don't want to overwrite your online redo logs with something not current (from your db backup, for example) when you are performing a recovery. To do so would cause an incomplete recovery.

It's confusing. I didn't believe it at first either.

And list, if I'm wrong, please set me straight.

Lisa Koivu
Oracle Database MONKEY
Fairfield Resorts, Inc.
5259 Coconut Creek Parkway
Ft. Lauderdale, FL, USA 33063
Office: 954-935-4117
Fax: 954-935-3639
Cell: 954-683-4459

-----Original Message-----
Sent: Thursday, May 22, 2003 2:27 PM
To: Multiple recipients of list ORACLE-L

Hi All,

In Oracle8i Backup & Recovery Handbook pg 13 it states "Finally, online redo log files should never be backed up....So, it is good practice not to back up online log files for ANY kind of backup.

Can someone clearly explain why this is recommended?

Thanks
Rick

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INET: Rajesh.Rao_at_jpmchase.com

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