I was creating a CDB database when I got the following error: Why did I get this error? Because I forgot to add the enable_pluggable_database parameter with the value to TRUE in the parameter file. Therefore, Oracle understood that I was creating a NON-CDB database instead of a CDB. After I added the parameter in the parameter file, it was possible to continue with the creation of the CDB database. enable_pluggable_database parameter with the value to TRUE Restating the instance with the new parameter: Creating the CDB database again:…