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Oracle DataGuard vs EMC RecoverPoint
Oracle DataGuard (DG) can be complemented with EMC RecoverPoint (RP) to uniquely address scalability, high availability, and DR requirements for a complicated environment that includes an Oracle DB and other non-Oracle applications, servers and data.
With RP CRR, it can be used to instantiate the initial standby DB, refresh or re-create the new standby DB after loss of the production DB, and refresh standby DB files that may have been invalidated due to nologging operations being run on the production DB.
With RP CDP, unlike Oracle Flashback, it will protect the DB instance from physical failure where the entire DB itself become unavailable.
Any comments or feedback are welcome!
BartS
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January 13th, 2012 00:00
All true but also consider the limitations. If RP CRR is only used for creating the initial standby or to refresh, then the actual DR mechanism is just Data Guard. Which means:
- No consistency groups
- No replication of non-logged transactions (so DG enforces logging even if you attempt to switch it off - resulting in serious performance impact for normally non-logged transactions)
- Bandwith limited by whatever DG can handle
- No way of using RP to shift back a few minutes (or longer) in time if something goes wrong (ie. RP was disabled in favor of DG)
- 2 (or more) methods for replication as you still need RP (or something else) for non-DB data. Increased complexity and risk.
Choose your potion... :-)
zhaos2
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February 6th, 2012 00:00
Thanks Sjerps for your inputs on the limitations of RP with Data Guard!
The white paper 'h2348 - Enhencing Oracle Database Protection with EMC RecoverPoint' is a very good reference for using RP local & remote replication to provide operation and DR for Oracle environment, and also explained:
- Using Oracle Data Guard and RP
- Using Data Guard with RP CRR for DR
- Using Data Guard with RP CDP for operational recovery.
jeff_browning
256 Posts
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November 13th, 2013 10:00
That white paper can be found here.