In a single-host configuration, the dbed_vmclonedb
command creates a clone database on the same host. The command can also be used to shut down the clone database and unmount its file systems. When creating or unmounting the clone database in a single-host configuration, -r
relocate_path
is required so that the clone database's file systems use different mount points than those used by the primary database.
When used in a two-host configuration, the dbed_vmclonedb
command imports the snapshot disk group SNAP_dg, mounts the file systems on the snapshot volumes, and starts a clone database. It can also reverse the process by shutting down the clone database, unmounting the file systems, and deporting the snapshot disk group. When creating the clone off host, -o vxdbavol=
vol_name
is required.
Caution When creating a clone database, all Storage Checkpoints in the original database are discarded.
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To mount a database and recover it manually
$ /opt/VRTS/bin/dbed_vmclonedb -S
ORACLE_SID
-g snap_dg \
-o mountdb,new_sid=
new_sid
[,vxdbavol=
vol_name
] -f
SNAPPLAN
\
In this example, file systems are mounted without bringing up the clone database. The clone database must be manually created and recovered before it can be used. This example is for a clone created on the same host as the primary database.
$ /opt/VRTS/bin/dbed_vmclonedb -S PROD -g SNAP_PRODdg \
-o mountdb,new_sid=NEWPROD -f snap1 -r /clone
dbed_vmclonedb started at 2006-03-02 15:34:41
Mounting /clone/prod_db on /dev/vx/dsk/SNAP_PRODdg/SNAP_prod_db.
Mounting /clone/prod_ar on /dev/vx/dsk/SNAP_PRODdg/SNAP_prod_ar.
Altering instance_name paramter in initpune.ora.
Altering instance_number paramter in initpune.ora.
Altering thread paramter in initpune.ora.
Starting automatic database recovery.
Database NEWPROD (SID=NEWPROD) is in recovery mode.
If the database NEWPROD is recovered manually, you must run
dbed_vmclonedb -o update_status to change the snapshot status.
dbed_vmclonedb ended at 2006-03-02 15:34:59
The database is recovered manually using dbinitdb
command.
The database status (database_recovered) needs to be updated for a clone database on the primary host after manual recovery has been completed.
$ /opt/VRTS/bin/dbed_vmclonedb -o update_status,new_sid=NEWPROD \
dbed_vmclonedb started at 2006-03-02 15:35:16
The snapshot status has been updated.
dbed_vmclonedb ended at 2006-03-02 15:35:42
In this example, file systems are mounted without recovering the clone database. The clone database must be manually recovered before it can be used. This example is for a clone created on a secondary host.
$ /opt/VRTS/bin/dbed_vmclonedb -S -g SNAP_PRODdg \
-o mountdb,new_sid=NEWPROD,vxdbavol=SNAP_arch -f snap2
dbed_vmclonedb started at 2006-03-09 23:26:50
Mounting /clone/arch on /dev/vx/dsk/SNAP_PRODdg/SNAP_arch.
Mounting /clone/prod_db on /dev/vx/dsk/SNAP_PRODdg/SNAP_prod_db.
Altering instance_name paramter in initpune.ora.
Altering instance_number paramter in initpune.ora.
Altering thread paramter in initpune.ora.
Starting automatic database recovery.
Database NEWPROD (SID=NEWPROD) is in recovery mode.
If the database NEWPROD is recovered manually, you must run dbed_vmclonedb -o update_status to change the snapshot status.
dbed_vmclonedb ended at 2006-03-09 23:27:17
The database is recovered manually.
The snapshot status (database_recovered) is updated for a clone database on a secondary host after manual recovery has been completed.
$ /opt/VRTS/bin/dbed_vmclonedb -o update_status,new_sid=NEWPROD \
dbed_vmclonedb started at 2006-03-09 23:34:01
The snapshot status has been updated.
dbed_vmclonedb ended at 2006-03-09 23:34:35
To clone the database automatically
dbed_vmclonedb
command as follows:
$ /opt/VRTS/bin/dbed_vmclonedb -S
ORACLE_SID
-g
snap_dg
\
-o recoverdb,new_sid=
new_sid
[,vxdbavol=
vol_name
] -f
SNAPPLAN
\
[-H
ORACLE_HOME
] [-r
relocate_path
]
Note When cloning a database on a secondary host, ensure that PRIMARY_HOST and SECONDARY_HOST parameters in the snapplan file are different.
When the -o recoverdb
option is used with dbed_vmclonedb
, the clone database is recovered automatically using all available archive logs. If the -o recoverdb
option is not used, you can perform point-in-time recovery manually.
In the following example, a clone of the primary database is automatically created on the same host as the primary database.
$ /opt/VRTS/bin/dbed_vmclonedb -S PROD -g SNAP_PRODdg \
-o recoverdb,new_sid=NEWPROD -f snap1 -r /clone
dbed_vmclonedb started at 2006-03-02 14:42:10
Mounting /clone/prod_db on /dev/vx/dsk/SNAP_PRODdg/SNAP_prod_db.
Mounting /clone/prod_ar on /dev/vx/dsk/SNAP_PRODdg/SNAP_prod_ar.
Altering instance_name paramter in initpune.ora.
Altering instance_number paramter in initpune.ora.
Altering thread paramter in initpune.ora.
Starting automatic database recovery.
Database NEWPROD (SID=NEWPROD) is running.
dbed_vmclonedb ended at 2006-03-02 14:43:05
In the following example, a clone of the primary database is automatically created on a secondary host.
$ /opt/VRTS/bin/dbed_vmclonedb -S PROD -g SNAP_PRODdg \
-o recoverdb,new_sid=NEWPROD,vxdbavol=SNAP_arch -f snap2
dbed_vmclonedb started at 2006-03-09 23:03:40
Mounting /clone/arch on /dev/vx/dsk/SNAP_PRODdg/SNAP_arch.
Mounting /clone/prod_db on /dev/vx/dsk/SNAP_PRODdg/SNAP_prod_db.
Altering instance_name paramter in initpune.ora.
Altering instance_number paramter in initpune.ora.
Altering thread paramter in initpune.ora.
Starting automatic database recovery.
Database NEWPROD (SID=NEWPROD) is running.
dbed_vmclonedb ended at 2006-03-09 23:04:50