2.11.1 Overview of Snapshot-Based Recovery of Database Servers

The recovery process consists of a series of tasks.

The recovery procedures use the diagnostics.iso image as a virtual CD-ROM to restart the database server in rescue mode using the ILOM.

Note:

Restoring files from tape may require additional drives to be loaded, and is not covered in this chapter. Oracle recommends backing up files to an NFS location, and using existing tape options to back up and recover from the NFS host.

The general work flow includes the following tasks:

1. Recreate the following:

   • Boot partitions
   • Physical volumes
   • Volume groups
   • Logical volumes
   • File system
   • Swap partition
2. Activate the swap partition.
3. Ensure the /boot partition is the active boot partition.
4. Restore the data.
5. Reconfigure GRUB.
6. Restart the server.

If you use quorum disks, then after recovering the database servers from backup, you must manually reconfigure the quorum disk for the recovered server. See Reconfigure Quorum Disk After Restoring a Database Server for more information.