“Duplicate from Active Database” Failed With ORA-12528 When Connecting to Auxiliary Instance


RMAN “duplicate target database for standby from active database” failed with below errors:

Connection from target database server to the auxiliary database  
fails with error:

ORA-12528: TNS:listener: all appropriate instances are blocking new 

It is a little bit tricky in RAC environment, this post will provide the solution for both single and RAC environment.


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