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Oracle High Availability

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Farooq Hussain

The document discusses Oracle High Availability, which focuses on controlling system availability, limiting downtime, and avoiding data loss to ensure business continuity. It explains the use of Oracle Real Application Clusters (RAC) for load balancing and easy management, alongside Oracle Data Guard for data protection during system failures. The importance of these technologies is emphasized as they help save time, money, and reduce stress for organizations.

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Oracle High Availability Farooq Hussain
What is it ? C ontrolling systems availability L imiting downtime A voiding any data loss S ecuring the enterprise S ustaining business continuity CLASS
Why is it needed ? Anything can happen at anytime A single failure can be extremely costly Technologies need more resources Improvement in business processing
How does it work ? Oracle Real Application Clusters (RAC) Multiple servers clustered using the same storage GRID : load balancing Always available Easily manageable Used in conjunction with Oracle Data Guard
How does it work ? RAC Server 1 RAC Server 2 Shared Storage DB Instance SAN DB Instance RAC
How does it work ? DB SAN DB Instance RAC RAC Server 1 RAC Server 2 X FAILURE
How does it work ? Oracle Data Guard Data protection at it’s best When business data is critical Switchover vs. Failover Used in conjunction with RAC
How does it work ? Primary DB Standby DB Singapore Airport Singapore Discovery Centre Data Synchronization
How does it work ? Primary DB Standby DB F A I L O V E R Singapore Airport Singapore Discovery Centre X FAILURE
Oracle High Availability Saves business Saves time Saves money Saves you stress Don’t you want to feel safe ?
Q&A Q&A Farooq Hussain

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Oracle High Availability

  • 1. Oracle High Availability Farooq Hussain
  • 2. What is it ? C ontrolling systems availability L imiting downtime A voiding any data loss S ecuring the enterprise S ustaining business continuity CLASS
  • 3. Why is it needed ? Anything can happen at anytime A single failure can be extremely costly Technologies need more resources Improvement in business processing
  • 4. How does it work ? Oracle Real Application Clusters (RAC) Multiple servers clustered using the same storage GRID : load balancing Always available Easily manageable Used in conjunction with Oracle Data Guard
  • 5. How does it work ? RAC Server 1 RAC Server 2 Shared Storage DB Instance SAN DB Instance RAC
  • 6. How does it work ? DB SAN DB Instance RAC RAC Server 1 RAC Server 2 X FAILURE
  • 7. How does it work ? Oracle Data Guard Data protection at it’s best When business data is critical Switchover vs. Failover Used in conjunction with RAC
  • 8. How does it work ? Primary DB Standby DB Singapore Airport Singapore Discovery Centre Data Synchronization
  • 9. How does it work ? Primary DB Standby DB F A I L O V E R Singapore Airport Singapore Discovery Centre X FAILURE
  • 10. Oracle High Availability Saves business Saves time Saves money Saves you stress Don’t you want to feel safe ?
  • 11. Q&A Q&A Farooq Hussain