For Oracle DBA jobs, developers use various programming languages. They can use C, C++, Visual Basic, PL/SQL, COBOL, or Java. They can use the most suitable language for each task as the entire functionality of Oracle is available in all languages. They don’t need prior experience as an SQL developer. They can also simply use languages they’re most proficient in. For database administrators, knowledge in database languages such as SQL, Query, and UNIX/Linux is necessary. For Oracle DBA, PL/SQL is often used as it can group procedures together into packages and are considered more complex and powerful.