Must Dataguard databases have different names?

The old manual method logshipping used for years is based on the same database names. All the dataguard literature I've read States that they must be different, but I have not found a case as to why. Can someone explain this?

Thank you

Jay

The name of the databases that you can see in the data base of v$ and DB_NAME in the spfile is always the same in the case of primary and physical standby.

Introduced in 10g was DB_UNIQUE_NAME, which should differ between database and relief, in order to make it clear what database Protocol redo transmission (no matter whether with LGWR or ARC) needs to be done.

It is then part of the parameter LOG_ARCHIVE_DEST_2 parameter, for example:
LOG_ARCHIVE_DEST_2 = "service = db_unique_name = physt physt'"

Kind regards
Uwe

http://uhesse.WordPress.com

Tags: Database

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