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Autonomous Data Guard on Dedicated Infrastructure

Robert Greene
Product Management

 

Oracle’s Autonomous Database has been gaining momentum as the world’s simplest way to develop and deploy data driven applications in the cloud. Now the extreme availability feature, Autonomous Data Guard (AuDG) previously available for Shared Infrastructure deployment, is also available on Dedicated Infrastructure deployments.

Autonomous Database on Dedicated Infrastructure provides the entire technology stack (storage, network, compute) to a single tenant and adds operational customization, policy controls that can influence how the autonomous software layer performs its tasks.  

The addition of Autonomous Data Guard adds an ability to improve the service uptime as necessary for more business critical or mission critical database deployments, protecting against failure scenarios that include among other things site level outages. Autonomous Data Guard on Dedicated Infrastructure adds functionality commonly requested by customers - delivering high availability and disaster recovery in an architecture similar to that found in the most critical on-premises Oracle deployments.

Autonomous Data Guard on Dedicated Infrastructure is a manifestation of Oracle’s Maximum Availability Architecture (MAA), incorporating autonomous operation of high availability best practices found in mission critical deployments from Oracle’s extensive set of enterprise customers.  Autonomous Data Guard includes key technologies:  Real Application Clusters (RAC), Active Data Guard (ADG), and Transparent Application Continuity (TAC). 

  • RAC enables the database to scale horizontally for both read and write operations while working in tandem with TAC to provide an always online maintenance experience and protects against the most common failure, local hardware and software related failures.
  • ADG is a database replication technology that protects against site level outages and block level data corruptions that can occur due to hardware failures. ADG provides a complete standby replica of your database to take over in the event of severe disasters where entire data center sites are lost. The standby site can also be actively used for reporting during normal operation. 
  • TAC is an intelligent driver technology that works with connection pooling, connection services and Oracle database state management capabilities that can rebuild session state of running transactions on a surviving cluster server - masking hardware and software level failures in a way that preserves all in flight transactions.

In the Autonomous Database on Dedicated Infrastructure, the above capabilities are autonomously operated to provide a zero downtime application experience for any kind of failure event. Autonomous Data Guard on Dedicated Infrastructure includes the following:

  • Autonomous Data Guard Enabled at Container Creation
  • Enabled Containers Filtered and Selectable at Autonomous Database Creation
  • Switchover, Failover, Reinstate controls for customer validation testing
  • Transport and Apply Lag Metrics and Alerting for Recovery Time Objective analysis
  • Symmetric Standby – primary storage and compute scale actions mirrored on standby
  • Autonomous Database Clone into AuDG Enabled Container to move existing databases into an AuDG protection level of service  
  • Standby site read-only connections and operation
  • Backup operations from both the primary and standby sites
  • Protection Modes (set when enabled):
    • Max Availability – synchronous replication of database transactions
    • Max Performance – asynchronous replication of database transactions

Summary:

Oracle Autonomous Database on Dedicated Infrastructure now supports Autonomous Data Guard, an autonomous operational implementation of Oracle’s Maximum Availability Architecture technology stack and delivers a mission critical database capability to everyone, available in minutes, without any need for deep administrative expertise in the underlying Exadata and Oracle Database technology stacks. For detailed information on the service and the Autonomous Data Guard, see the User Documentation for complete details.  

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Comments ( 1 )
  • Anirban Mondal Thursday, October 15, 2020
    This is wonderful, given the EXACS provides 99.95 in SLA, hope this one gives 4 Nines.
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