Which statement best describes the relationship between an Oracle instance and a database?A) Multiple databases can be mounted by a single instance at the same time.B) Multiple instances can mount and open a single database simultaneously.C) A single instance can mount multiple databases simultaneously.D) Each database is always associated with only one instance.
Question
Which statement best describes the relationship between an Oracle instance and a database?A) Multiple databases can be mounted by a single instance at the same time.B) Multiple instances can mount and open a single database simultaneously.C) A single instance can mount multiple databases simultaneously.D) Each database is always associated with only one instance.
Solution
The statement that best describes the relationship between an Oracle instance and a database is B) Multiple instances can mount and open a single database simultaneously. This is known as a Real Application Clusters (RAC) in Oracle. It allows multiple instances to access a single database, thereby providing high availability and scalability.
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