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yes you are right upto some extent...here is para form oracle doc
oracle data guard is maximum availiblity solution which maintain physical standby databases and in case of failure of production can switch production role to and standby database.
Oracle Data Guard is the most effective and comprehensive data availability, data protection, and disaster recovery solution for enterprise databases. It provides the management, monitoring, and automation software infrastructure to create and maintain one or more synchronized standby databases to protect data from failures, disasters, errors, and corruptions. Data Guard standby databases can be located at remote disaster recovery sites thousands of miles away from the production data center, or they may be located in the same city, same campus, or even in the same building. If the production database becomes unavailable because of a planned or an unplanned outage, Data Guard can switch any standby database to the production role, thus minimizing downtime and preventing any data loss.
read it here
thanks and regards
Edited by: Dixit on Aug 31, 2009 1:35 AM
Edited by: Dixit on Aug 31, 2009 1:36 AM
Then the Oracle Dataguard is different and Physical Standby is different?
Data guard is a term and Physical Standby is a type of the standby database within a dataguard configuration.
Dataguard is just the new marketing label for standby, resulting from an extra interface (Dataguard manager or Dataguard broker) to manage the standby database.
Senior Oracle DBA