Data Guard
Oracle Active Data Guard ensures high availability, data protection, and disaster recovery for enterprise data. Survive disasters and data corruption while creating, maintaining, and managing one or more synchronized standby databases.
Active Data Guard versus storage remote mirroring
Fully integrated into the Oracle Database, Data Guard and Active Data Guard’s architectural advantages provide superior data protection and availability for the Oracle Database compared to the increased risks of storage replication techniques.
Data Guard and Active Data Guard MAA best practices
Implement Oracle Data Guard best practices to achieve minimal downtime and zero data loss for unplanned outages.
Autonomous Data Guard: Disaster recovery protection with a couple clicks in the cloud
Autonomous Data Guard provides a fully managed high-availability and disaster- recovery configuration across availability domains (ADs) with the simple click of a button or REST API call to enable it.
Active Data Guard features
Disaster recovery key capabilities
Disaster recovery to multiple standby databases
Oracle Data Guard’s automation manages one or more synchronized copies of a live database—providing zero data loss in the case of an unexpected outage of the primary database.
In-memory database replication
In-memory redo replication ensures isolation from underlying corruption such as disk corruption and includes automatic comprehensive validation of replicated data blocks.
Flexible protection modes
Data Guard provides three different protection modes that allow data replication flexibility to balance data loss protection and performance.
Real-Time Query and DML Offload on Oracle Active Data Guard
Real-time query and data manipulation language uses the standby database for queries, reports, and occasional updates without impacting the primary database
Data protection
Fast-start failover (FSFO)
Fast-start failover allows the Oracle Data Guard broker to automatically failover to a standby database without the need for human intervention.
Automatic Block Repair
Provides automatic and user-transparent recovery of a corrupted database from the standby database.
- Explore how automatic block media recovery provides data protection
- Overview: Oracle Active Data Guard Automatic Block Repair (0:37)
- Demo: Oracle Active Data Guard Automatic Block Repair (0:54)
Far Sync
Achieve zero data loss across any distance in the event of site failure—with no network latency.
Advanced data protection features
Application Continuity
Masks outages from end-users and applications by recovering in-flight database transactions following recoverable outages.
- Explore Application Continuity
- Demo: Transparent Application Continuity with Oracle Active Data Guard (1:16)
Rolling database upgrades
Reduces downtime for database version upgrades without the complexity of adding extra software to the system.
Global Data Services (GDS)
GDS provides load balancing for connection requests ,distributing service management across multiple replicated databases and enables connections depending on read or read/write workload for Active Data Guard.
Oracle Globally Distributed Database
Oracle Globally Distributed Database disperses segments of a data set across many databases (shards) onto different computers—on-premises or in the cloud. It enables globally distributed, linearly scalable, multimodel databases.
Data Guard customer successes
Oracle Data Guard offers data protection and availability across data centers or the cloud.
Data Guard use cases
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Complete data protection and disaster recovery
Automates the management of synchronized copies of a live database and is included with Oracle Database Enterprise Edition.
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Automatic role transitions to maintain business continuity
Failover automation ensures a seamless transition from the primary database to a synchronized standby database in cases of failure, while ensuring database availability by replaying uncommitted in-flight transactions.
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Minimize downtime for upgrades
Full upgrade automation with minimal downtime via rolling database version upgrades without the complexity of adding extra software to the system.
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Zero data loss at any distance
Zero data loss is achieved when utilizing Far Sync even over configurations where the primary and standby databases are distributed over long geographical distances without risking application performance.
Disaster recovery and data protection resources
Data Guard documentation
Disaster recovery and data protection best practices
Disaster recovery related products and solutions
Get started with Oracle Active Data Guard
Try it on LiveSQL.oracle.com
Read the latest guidance and start coding.
Oracle Live Workshop
Active Data Guard Fundamentals on DBCS Live Lab.
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