Difference between DB name, DB global name, DBID and SID

(Doc ID 1277854.1)

Last updated on DECEMBER 06, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.1 and later
Information in this document applies to any platform.
***Checked for relevance on 5-Nov-2012***

Goal

Q. What's a DBID? 
Q. What's a DB Name?
Q. What's a SID?
Q. What's a Database global name?
Q. Is it possible to change only DBID without changing DB name?
Q. Is it possible to have a database with a DB name that is different from SID?
Q. What's DB_UNIQUE_NAME, and what's the difference between DB_UNIQUE_NAME and database global name?

Solution

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