Today I start with first 20c database creation and would like to share how its look like the entire process for create of new CDB database

This will be the first step to test upgrade from 12.2 to 20c which will be available here very soon

Create a database

Advanced Configuration

Oracle Single Instance Database, General Purpose

Global Database Name,SID, Use Local Undo tablespace for PDB`s, Create a Container database with one or more PDB`s, Number of PDB`s =1, PDB name = PDB20C

Use following for the database storage location, file system, Database files location, Use Oracle-Managed files (OMF)

Specify Fast Recovery Area, Recovery Area location 

Select Listener or create a new one

You can configure Database Vault, Label Security

Keep the default memory allocation, in case of need you can change the type and allocation 

You cannot change block size, but you can add a bigger number of process in case of needs

Keep the default 

Keep the default 

If you need sample schema you can tick on this option

Configure Enterprise Manager (EM) Database Express - add a port number of keep default

Add a password for all users

This is all listed Parameters if you need you can change here 

You can review all location and creation or tablespace and redo logs etc

Generate Database Creation Scripts - yes 

Overview of all configuration - Finish

Process of DB creation starts and you have to wait for a few minutes

Done

Open the web browser and try to access DB express https://<hostname>:5501/em

Have fun with newly create 20c Database