User's Manual

2.8
Recovery Manager Utilities
Recovery Manager for Oracle User’s Guide
Once created, the virtual copy can be mounted on the backup host for off-host processing
purposes such as backup and database cloning.
A database virtual copy consists of multiple virtual copies of underlying 3PAR virtual volumes
used by Oracle datafiles, archive log destination, or both, depending on which option is
specified (online, offline, datafile, or archonly). An archive log virtual copy can be used in
conjunction with online or offline virtual copy to simulate an incremental backup.
If Recovery Manager is configured to use Oracle RMAN for backup, an RMAN Recovery Catalog
must have been created and configured prior to running the create utility. The Recovery
Manager create utility performs Recovery Catalog synchronization during the virtual copy
creation process.
When creating an online virtual copy, the create utility performs the following actions:
■ Discovers devices (3PAR virtual volumes) used by the datafiles and archive log destination.
■ Puts all tablespaces in backup mode.
■ Creates a virtual copy for the datafile virtual volumes.
■ Takes all tablespaces out of backup mode.
■ Switches online redo logs and archives them to archive log destination.
■ Resynchronizes the Recovery Catalog to update with newly generated archive logs if the
virtual copy is to be backed up using Oracle RMAN.
■ Creates a virtual copy for the archive log destination virtual volumes.
An offline virtual copy is created while the database is CLOSED. The create utility will perform
the following actions:
■ Starts up the database in MOUNTED mode to retrieve list of datafiles and shuts down the
database.
■ Discovers devices (3PAR virtual volumes) used by the datafiles.
■ Creates a virtual copy for the datafile virtual volumes.
An archive log virtual copy is created while the database is OPEN and performs the following
actions:
■ Discovers devices (3PAR virtual volumes) used by the archive log destination.
■ Switches logs and archives online redo logs to archive log destination.