Oracle DBA interview questions that are a must-know

Are you preparing for the Oracle DBA positions? Considered as the best DB solutions for diverse IT requirements, the gritty Oracle DB position requires the best professionals to make them operational. Here are the top five interview questions that are sure to land you in the best Oracle jobs in California.

• Explain sqlnet.ora

Ans: They are used for database security, and sqlnet.ora is associated with the privileged IP address to access the database.

• What are the components of logical and physical database structure?

Ans: Physical: Control Files, Datafile, and redo logfiles Logical: Redo log buffer cache, database buffer cache, large pool, and shared pool.

• Define Database Writer(DBWR)

Ans: DBWR is responsible for writing data into the cache files from the database buffer cache.

• Explain the listener process.

Ans: The listener process is related to network connectivity, SQL, and application development tools used to access the database. tnsnames.ora and Listener.ora are the two files used in the listener process.

• State the difference between PFILE and SPFILE.

Ans: PFILE is a text parameter file used to set parameters for database initialization, whereas the SPFILE is a binary file’s server parameter file. SPFILE also contains DB initialization parameters that help with dynamic changes in the server without restarting the instance.  

Read More : Roles And Responsibilities Of An Oracle Database Administrator