Oracle RAC Interview Questions

Oracle RAC Interview Questions

Welcome to  Oracle RAC Interview Questions app, here you will get Interview Questions.

Oracle RAC allows multiple computers to run Oracle RDBMS software simultaneously while accessing a single database, thus providing clustering.

In a non-RAC Oracle database, a single instance accesses a single database. The database consists of a collection of data files, control files, and redo logs located on disk. The instance comprises the collection of Oracle-related memory and background processes that run on a computer system.

In an Oracle RAC environment, 2 or more instances concurrently access a single database. This allows an application or user to connect to either computer and have access to a single coordinated set of data. The instances are connected within each other through an "Interconnect" which enables all the instances to be in sync in accessing the data.