Db_unique_name and settings db_name

I a doubt on a question that did me a customer and I hope that If you can solve you me,

It comes to the db_name et db_unique_name.

( The the question is, in one 11 GR 2 Data Guard (), the db_name is the same for all the databases and what changes is the db_unique_name, so little clear.

It is possible that in a physics Eve et one Eve primary, the main parameter db_unique_name db_name is different , let me explain:

Primary

________________

db_name = BDRP

db_unique_name = bdrpo3

Standby

_________________

db_name = BDRP

db_unique_name = bdrpo4

In all notes and manuals on the primary meeting these two parameters are equal and these change settings in day before. May be different in le Primary as in le day before, or on the contrary that there is a restriction.

Is there a note explaining this thing.

Thank you very much

Ok

It has a unique value on the primary database and on each standby database.

So on the primary, it may be different than the DB_NAME so much that its unique.

http://docs.Oracle.com/CD/E11882_01/server.112/e25513/initparams070.htm

Of interest:

Impossible to start restart Db Oracle using 12 c If db_unique_name and db_name are different [1479564.1 ID]

11.2 Data Guard physical standby passage best practices through the broker [1305019.1 ID]

Best regards

mseberg

Tags: Database

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