[DBT-11211] The Automatic Memory Management option is not allowed when the total physical memory is greater than 4GB

In 12.2.0.1, when creating a multitenant CDB database by using DBCA, the below error occurs:

[DBT-11211] The Automatic Memory Management option is not allowed
            when the total physical memory is greater than 4GB

Workaround

Choose to use ASMM ( Automatic Shared Memory Management ) instead of AMM ( Automatic Memory Management ).