Backing Up Oracle - Computing at Cornell

E.2 Overview of TDP for ESS
TDP for ESS takes advantage of the FlashCopy feature of the IBMM ESS to
make a copy of an Oracle database so it can perform an RMAN database
backup on the database copy instead of the actual database. A separate
machine called the backup machine, which has access to the database copy
on FlashCopy devices, is used to perform the RMAN backup.
Because resources associated with a backup process are “off-loaded” onto a
separate backup machine, the availability of databases running on production
machines is increased. This also reduces any performance impact that is
normally caused by backup processes on production databases.
TDP for ESS also employs the use of TDP for Oracle to backup databases to
TSM. The TSM server can reside on the backup machine. Figure 61 shows a
typical TDP for ESS configuration.
Production Machine IBM ESS Backup Machine
Oracle
Production
System
Figure 61. Typical TDP for ESS configuration
TDP for ESS includes programs that are executed on the production machine
and on the backup machine. The FlashCopy is done by the program that
executes on the production machine. The program that executes on the
backup machine does the Oracle backup, using the file created by the
FlashCopy.
230 Backing Up Oracle using Tivoli Storage Management
Oracle
Datafiles
Flashcopy
Devices
Oracle Backup
System
TSM Server