Oracle technical interview questions and answers are crucial for candidates preparing for database-related roles such as Database Developer, SQL Programmer, DBA, or Data Analyst. Oracle is widely used in enterprise applications, so interviewers frequently test a candidate’s concepts in SQL, PL/SQL, joins, indexing, triggers, views, transaction management, and performance tuning. Companies like TCS, Wipro, Infosys, Capgemini, and Cognizant often include Oracle questions in both technical interviews and written tests. This guide covers the most frequently asked Oracle interview questions with clear explanations, practical examples, and beginner-friendly definitions. Whether you are preparing for a campus placement or an experienced-level interview, mastering these Oracle concepts will help you answer confidently. You can also download Oracle interview PDFs and practice company-wise mock tests to enhance your preparation.
Database professionals can deepen their Oracle expertise by studying PL/SQL programming and understanding DBMS concepts thoroughly
Showing 10 of 113 questions
81. What are the system resources that can be controlled through Profile ?
The number of concurrent sessions the user can establish the CPU processing time available to the users session the CPU processing time available to a single call to ORACLE made by a SQL statement the amount of logical I/O available to the users session the amout of logical I/O available to a single call to ORACLE made by a SQL statement the allowed amount of
idle time for the users session the allowed amount of connect time for the users session.
82. What is Tablespace Quota ?
The collective amount of disk space available to the objects in a schema on a particular tablespace.
83. What are the different Levels of Auditing ?
Statement Auditing, Privilege Auditing and Object Auditing.
84. What is Statement Auditing ?
Statement auditing is the auditing of the powerful system privileges without regard to specifically named objects.
85. What are the database administrators utilities available ?
SQL * DBA - This allows DBA to monitor and control an ORACLE database. SQL * Loader - It loads data from standard operating system files (Flat files) into ORACLE database tables. Export (EXP) and Import (imp) utilities allow you to move existing data in ORACLE format to and from ORACLE database.
86. How can you enable automatic archiving ?
Shut the database
Backup the database
Modify/Include LOG_ARCHIVE_START_TRUE in init.ora file.
Start up the database.
87. What are roles? How can we implement roles ?
Roles are the easiest way to grant and manage common privileges needed by different groups of database users. Creating roles and assigning provides to roles. Assign each role to group of users. This will simplify the job of assigning privileges to individual users.
88. What are Roles ?
Roles are named groups of related privileges that are granted to users or other roles.
89. What are the use of Roles ?
REDUCED GRANTING OF PRIVILEGES - Rather than explicitly granting the same set of privileges to many users a database
90. What is Privilege Auditing ?
Privilege auditing is the auditing of the use of powerful system privileges without regard to specifically named objects.