Manually change availability zone of Multi-AZ enabled Oracle AWS RDS

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Although it not very common to manually change the AWS RDS availability zone we have come across two situation where it was required.

1. Application was using RDS IP, during a AWS maintenance windows RDS was moved to secondary availability zone. Quick code change was not an option so we had to manually switch to original availability zone
2. After a reboot of the RDS instance there were some I/O performance degradation was monitored. We thought it might be due to host system change on AWS and decided to do a manual switch to passive availability zone. There we haven't seen I/O issue.

It is straight forward to do a manual availability zone switch using the console. Go to,
Instance actions -- Reboot -- Make sure to tick the "Reboot With Failover"


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