Oracle Database Administration (DBA) is a specialized skill that involves the installation, configuration, monitoring, maintenance, and troubleshooting of Oracle databases. It includes tasks like backup and recovery, performance tuning, database security, and user management. The DBA is responsible for ensuring the availability, reliability, and scalability of the database, as well as optimizing its performance and ensuring compliance with industry standards and regulations. A successful DBA must have a thorough understanding of database architecture, operating systems, networking, and security.