Oracle Core DBA Topics

Open the below links

https://talk2oracle.blogspot.com/p/tablespace-management.html
https://talk2oracle.blogspot.com/p/parameter-file-management.html
https://talk2oracle.blogspot.com/p/static-and-dynamic-parameters.html
https://talk2oracle.blogspot.com/p/oracle-client-software-installation-and.html
https://dbaclass.com/article/convert-non-cdb-database-to-pdb-database-in-oracle-12c
https://talk2oracle.blogspot.com/p/backups.html
https://talk2oracle.blogspot.com/p/rman-configuration.html
https://talk2oracle.blogspot.com/p/controlfile-management.html
https://talk2oracle.blogspot.com/p/redolog-file-management.html
https://talk2oracle.blogspot.com/p/redolog-file-management_19.html
https://talk2oracle.blogspot.com/p/database-upgrade-from-11204-to-12102.html
https://talk2oracle.blogspot.com/p/database-patching-11g.html
https://talk2oracle.blogspot.com/p/database-patching-12c.html