Oracle Database Administration I Practice Exam: Test Your Knowledge 2025

Which Oracle Database background process is responsible for writing modified data blocks from the database buffer cache to the data files?

A DBA needs to start an Oracle Database instance to perform maintenance on the control files. The instance should be started but the database should not be mounted. Which command should be used?

Which file contains the connection information required by Oracle Net to establish a connection from a client to a database service?

A DBA needs to grant a user the ability to connect to the database and create tables in their own schema. Which system privilege should be granted?

Which type of segment is automatically created when a table is created and stores the actual table data?

What is the primary purpose of the UNDO tablespace in an Oracle Database?

A database administrator discovers that the System Global Area (SGA) is experiencing high memory pressure. Which dynamic view can be queried to analyze the current memory allocation and usage of SGA components?

An Oracle Database instance has crashed unexpectedly. When the instance is restarted, which background process is responsible for performing instance recovery?

A DBA needs to configure the listener to dynamically register database services without manually configuring them in the listener.ora file. Which initialization parameter must be properly set in the database?

A company wants to implement a security model where users authenticate using their operating system credentials instead of database passwords. Which authentication method should be configured?

A DBA notices that a tablespace is running out of space. The tablespace was created with AUTOEXTEND OFF. What is the most appropriate immediate action to resolve space issues without adding new data files?

Which parameter controls the maximum duration that undo data is retained in the UNDO tablespace for queries, even when the space is needed for new transactions?

What type of database backup captures all used blocks in the database and can be used to restore the database without applying redo logs?

A database is configured with multiple Program Global Areas (PGAs) for different server processes. Which initialization parameter controls the total amount of PGA memory available to all server processes?

During a maintenance window, a DBA needs to shut down a database but wants to ensure that all connected users complete their current transactions before the database shuts down. No new connections should be allowed. Which shutdown mode should be used?

A DBA needs to revoke the ability for user JOHN to grant the SELECT privilege on a specific table to other users, but JOHN should still be able to query the table himself. What action should be taken?

A production database is experiencing performance issues. The DBA identifies that the database buffer cache hit ratio is very low. Which of the following actions would MOST effectively address this issue?

An organization requires that the database automatically starts whenever the server is rebooted. The database and listener are properly configured. Which file must be properly configured on a Linux system to achieve this requirement?

A tablespace is created with the SEGMENT SPACE MANAGEMENT AUTO option. What is the primary benefit of this configuration compared to MANUAL segment space management?

During a database restore operation, a DBA needs to recover the database to a specific point in time before a user accidentally dropped a critical table. Which type of recovery should be performed?