39 Configuring Continuous Availability for Applications
Depending on your application's high availability requirements, you can implement the level of high availability (HA) protection that you need.
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Configuring Level 2: Prepare Applications for Planned Maintenance
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Configuring Level 3: Mask Unplanned and Planned Failovers from Applications
The primary audience for this document is application developers and application owners. Operational examples are included for database administrators and PDB administrators.
In About Application High Availability Levels, the three HA protection levels and terms are defined, and software recommendations are listed.