Learn the fundamentals of database to set the stage for Oracle Architecture
Understand the Process and Memory Architecture (This is important as understanding this will help you solve lot of critical performance issues).
Install Oracle Database 11g & 12c (Manual method and using DBCA)
Tablespace management to manage space to store the data.
UNDO Tablespace management to manage undo space.
REDO Log file management to manage redo space.
Manage users and security
Networking (Configuring Listeners and TNS entries)
Understand various Data dictionary tables/views
Diagnose issues using Diagnose data and generate packages for Oracle Support.
Backup and Recovery (User Managed)
Backup and Recovery (RMAN)
Oracle 12C Database Administration With Hands on Experience.
Database instance and storage
Instance memory pools
Instance background processes
Database storage file types
Control files and backup files
Starting and stopping the database
Installing Oracle 12c software
Using the developer tools