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You can find all standby databases for a primary database in data guard by using one of the queries below.
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SQL> show parameter log_archive_config NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ log_archive_config string DG_CONFIG=(primary,standby) |
or
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SQL> select * from v$dataguard_config; DB_UNIQUE_NAME ------------------------------ standby Primary |
Standby -> Returns the unique name of the current database.
Primary -> Returns the unique name of the other database in the Environment.
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