Use this script to initiate online off-host backup of an Oracle database.

#!/bin/ksh
#
# script: backup_online.sh <dbnode>
#
# Sample script for online, off-host backup.
#
# Note: This is not a production level script, its intention is to help
# you understand the procedure and commands for implementing
# an off-host point-in-time copy solution.

export ORACLE_SID=dbase
export ORACLE_HOME=/oracle/816
export PATH=$ORACLE_HOME/bin:$PATH

dbnode=$1
dbasedg=dbasedg
snapvoldg=snapdbdg
newvollist="snap_dbase_vol source=dbase_vol/newvol=snap_dbase_vol"
snapvollist="snap_dbase_vol"
volsnaplist="snap_dbase_vol source=dbase_vol"
exit_cnt=0
arch_loc=/archlog

# Put the Oracle database in hot-backup mode; 
# see the backup_start.sh script for information.

su oracle -c backup_start.sh

# Refresh the snapshots of the volumes.
#
# Note: If the volume is not mounted, you can safely ignore the 
# following message that is output by the snapshot operation:
#
# ERROR: Volume dbase_vol: No entry in /etc/mnttab for volume

vxsnap -g $dbasedg make $newvollist

# Take the database out of hot-backup mode;
# see the backup_end.sh script for information.

su oracle -c backup_end.sh

# Back up the archive logs that were generated while the database
# was in hot backup mode (as reported by the Oracle Server Manager).

# Move the snapshot volumes into a separate disk group.

vxdg split $dbasedg $snapdg $snapvollist

# Deport the snapshot disk group.

vxdg deport $snapdg

# The snapshots of the database can be imported and backed up
# on the OHP node and then deported.
# Note: Replace "rsh" with "remsh" on HP-UX systems.

rsh $dbnode -c "do_backup.sh $snapvollist"

# Import the snapshot disk group -- if the database disk group is
# cluster-shareable, you must also specify the -s option.

vxdg import $snapdg

# Join the snapshot disk group to the original volume disk group.

vxdg join $snapdg $dbasedg

# Restart the snapshot volumes.

for i in 'echo $snapvollist'
do
   vxrecover -g $dbasedg -m $i
   vxvol -g $dbasedg start $i
done

# Reattach the snapshot volumes ready for the next backup cycle.

vxsnap -g $dbasedg reattach $volsnaplist