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Validating Application Failover Readiness (Doc ID 2758734.1)

Last updated on MARCH 15, 2021

Applies to:

Gen 2 Exadata Cloud at Customer - Version All Versions and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Autonomous Database Dedicated - Version NA and later
Information in this document applies to any platform.

Goal

It is important to validate an application’s failover readiness for different types of outage types. One should understand the extent to which an application is able to failover, continue running, and mitigate impacts to it.

This note will cover two outage classes: unplanned outages and planned maintenance. Unplanned outages occur due to a sudden and unexpected failures and timeouts. Planned maintenance events occur when the system requires a software update or patch or downtime to replace a component.

Solution

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In this Document
Goal
Solution
  Evaluating Application Failover Readiness
 Prerequisites
 Unplanned Outages
  How to Validate Application Unplanned Outage Scenarios
  Planned Maintenance
 How to Validate Application Planned Outage Scenarios
 Commands for Draining/Relocating
References

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