ODA X6-2S - upgrade from 12.1.2.10.0 to 12.1.2.11.0 ... just a few remarks

Did an update of our ODA X6-2S from 12.1.2.10.0 to 12.1.2.11.0 Patch Bundle and want to share some findings. 

The patching process is described quite good in the README - nevertheless, a few remarks:

• the whole process took about 2 hours - without downloading the necessary files and preparations (for example: read the README ;-))
• The time, the update process takes, depends on the number of databases running on that system (in our case just four)
• The README does not clearly mention that the system is rebooted two times. 
  First time after step odacli update-server, second after step odacli update-storage. But not immediately after the update step - the system waits for 5 Minutes until it starts rebooting (!)
  Do not start any following step before the reboot has taken place and the system is available again. 
• README chapter 4 - Post Patching Steps - tells not the whole truth: oracle talks about issuing an update-image command. But, in the Image-Patch README is mentioned that You have to issue a
  
  odacli update-repository --fileName /tmp/oda-sm-12.1.2.11.0-170503-DB-12.1.0.2.zip
  
  Long story told short:

1. do the 'update-repository' step first 
2. '--fileName' will throw an error - the command is: '--filename' (all lower case) or - alternatively '-f'
3. after updating the repository, issue the update-image

That's it, basically. Happy upgrading!