Re: I/O activity during HOT backups

No! The command below stops all writes to the datafiles in the tablespace for the duration of the backup, to ensure consistency.

The i/o overload I see during backups is the data being copied out to our backup server. And it is usually very high: like 80% of all current activity.

Lisa

Dan.Hubler_at_midata.com on 06/19/2000 01:18:14 PM

Please respond to ORACLE-L_at_fatcity.com

To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> cc: (bcc: Lisa Koivu/GELCO)

Subject: I/O activity during HOT backups

Please settle a discussion amongst our DBA team:

Is there ANY I/O that takes place to the database files (*.DBF) during a HOT backup? (That is, ALTER TABLESPACE BEGIN BACKUP).

If not, how does the process work?

Thanks.

???

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