Backup control file with RMAN
I have been struggling with the impact of making manual backups of a control file vs using the autobackup feature for controlfile.
From the manual (Backup and Recovery basics)
"A manual backup of the control file is not the same as the control file autobackup. In manual backups, only RMAN repository data for backups within the current RMAN session is in the control file backup, and a manually backed-up control file cannot automatically restored."
I'm not completely sure what is meant by this statement. But what is exactly the impact of a manual backup in following cases ?
1) If you run "backup current controlfile" in an rman session after you have done some other backup command (ie backup database) is this previous backup record in the control file backup followed or is it using a snapshot from before that command.
"A manual backup of the control file is not the same as the control file autobackup. In manual backups, only RMAN repository data for backups within the current RMAN session is in the control file backup, and a manually backed-up control file cannot automatically restored."
I'm not completely sure what is meant by this statement. But what is exactly the impact of a manual backup in following cases ?
1) If you run "backup current controlfile" in an rman session after you have done some other backup command (ie backup database) is this previous backup record in the control file backup followed or is it using a snapshot from before that command.
0