ORACLE DATA GUARD INTERVIEW QUESTIONS & ANSWERS

Q 1 What is data guard in simple language? 

Your primary database is running and you want to reduce downtime because of unplanned outages. You create a replica of this primary database (termed as standby database).

Oracle DBA Interview Questions and Answers - Datapump

In which cases imp/exp is used?

-Eliminate database fragmentation
-Schema refresh (move the schema from one database to another)
-Detect database corruption. Ensure that all the data can be 

read (if the data can be read that means there is no block corruption)