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Oracle Active Data Guard

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description Oracle Active Data Guard Overview

Oracle Active Data Guard is a database replication solution designed to ensure business continuity. It creates standby copies of primary Oracle databases at geographically separate locations. This technology provides automated failover capabilities minimizing downtime and data loss in case of primary site outages. It’s utilized by organizations requiring robust high availability and disaster recovery solutions, particularly those running Oracle database systems.

help Oracle Active Data Guard FAQ

What does Oracle Active Data Guard do that normal Data Guard does not?

Oracle Active Data Guard lets a physical standby database stay open read-only while redo is being applied. That means the standby can serve reporting or read workloads while still supporting disaster recovery.

Is Oracle Active Data Guard included with Oracle Database Enterprise Edition?

Active Data Guard is generally licensed as an extra Oracle Database option on top of Enterprise Edition. Licensing terms can change by contract, so production use should be checked against the current Oracle ordering document.

Can Active Data Guard prevent data loss?

It can be configured for very low data loss, especially with synchronous transport and appropriate protection modes. The actual recovery point depends on network latency, redo transport settings, and whether the deployment chooses maximum availability or maximum performance.

How is Active Data Guard different from Oracle GoldenGate?

Active Data Guard is primarily physical standby replication for high availability, disaster recovery, and read-only offload. Oracle GoldenGate is a logical replication product often used for heterogeneous replication, migrations, and more selective data movement.

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