Database Install/Upgrade/Opatch (MOSC)

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How do I upgrade mulitple instances from 11.2.0.3 on one ORACLE_HOME to 12C non-cdb using DBUA?

edited Sep 2, 2015 3:29PM in Database Install/Upgrade/Opatch (MOSC) 6 commentsAnswered

I have just started as a DBA at a new shop.  The shop is at 11.2.0.3 and they want to upgrade to 12C.  I have tested the upgrade using the DBUA on a test box and did it with no problems. I have a few questions:

a. The shop I am in has 10 production instances in one ORACLE_HOME, when I upgrade do I have to have a multitenant setup?

b. When I did my test upgrade the upgrade came back as a non-cdb, why?

c.  Can I upgrade all 10 instances at once using the DBUA into a non-cdb?

d.  Will I have to have a multitenant license?

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