As an Oracle database administrator (DBA), you can expect to be involved in the following tasks:
Installing Oracle software
Creating Oracle databases
Performing upgrades of the database and software to new release levels
Starting and shutting down the database instance
Managing the storage structures of the database
Managing users and security
Managing database objects, such as tables, indexes, and views
Backing up the database and performing recovery operations when necessary
Monitoring the state of the database and taking preventive or corrective action as required
Monitoring and tuning database performance
Diagnosing and reporting critical errors to Oracle Support Services
In a small to medium-sized database environment, you might be the sole person performing these tasks. In large, enterprise environments, the job is often divided among several DBAs, each of whom has a specialty, such as database security or database tuning.
See Also:
Oracle Database Concepts for more information about the duties of database administrators