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Mounting the snapshot volumes and backing up

Before using the snapshot volumes to do a backup, you must first mount them.

 To mount the snapshot volumes

• Use the dbed_vmclonedb command as follows:

  $ /opt/VRTS/bin/dbed_vmclonedb -S ORACLE_SID -g snap_dg \

  -o mount,new_sid=new_sid -f SNAPPLAN [-H ORACLE_HOME] \

  [-r relocate_path]

You can now back up an individual file or a group of files under a directory onto the backup media.

In this example, snapshot volumes are mounted.

$ /opt/VRTS/bin/dbed_vmclonedb -S PROD -g SNAP_PRODdg \

-o mount,new_SID=NEWPROD -f snap1 -r /clone/single

dbed_vmclonedb started at 2004-04-02 15:35:41

Mounting /clone/single/prod_db on /dev/vx/dsk/SNAP_PRODdg/SNAP_prod_db.

Mounting /clone/single/prod_ar on /dev/vx/dsk/SNAP_PRODdg/SNAP_prod_ar.

dbed_vmclonedb ended at 2004-04-02 15:35:50

 To mount a Storage Checkpoint carried over from the snapshot volumes to a secondary host

1. On the secondary host, list the Storage Checkpoints carried over from the primary database using:

   $ /opt/VRTS/bin/dbed_ckptdisplay -S ORACLE_SID -n

2. You can mount one of the listed Storage Checkpoints using:

   $ /opt/VRTS/bin/dbed_ckptmount -S ORACLE_SID -c CKPT_NAME \
-m MOUNT_POINT

Limitations

• Any mounted Storage Checkpoints must be unmounted before running the following commands:

  $ /opt/VRTS/bin/dbed_vmclonedb -o umount,new_sid=new_sid \
-f SNAPPLAN

• It is only possible to mount a Storage Checkpoint carried over with the snapshot volumes in a two-host configuration if the snapshot volumes were mounted with the dbed_vmclonedb command with the -o mount option without the use of -r relocate_path.
• Storage Checkpoints carried over with the snapshot volumes can be mounted before a clone database is created using dbed_vmclonedb with the -o mount option. After a clone database is created using dbed_vmclonedb with the -o recoverdb option, however, Storage Checkpoints are no longer present.

 To back up the database using the snapshot

• Copy the snapshot volumes to tape or other appropriate backup media.

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    Note   If you use the Oracle online backup method, you must also back up all the archived log files in order to do a complete restore and recovery of the database.

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