RMAN-20002: target database already registered in recovery
catalog
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Answer / guest
Cause: target database is already registered in the recovery
catalog
Action: if the target database is really registered, there
is no need to register it again. Note that the recovery
catalog enforces that all databases have a unique DBID. If
the new database was created by copying files from an
existing database, it will have the same DBID as the
original database and cannot be registered in the same
recovery catalog.
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