How to fix the Oracle error ORA-23356: masterdef recognizes a master which does not recognize the masterdef?

In this post, you’ll learn more about the Oracle ErrorORA-23356: masterdef recognizes a master which does not recognize the masterdef with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-23356: masterdef recognizes a master which does not recognize the masterdef

Reason for the Error ORA-23356: masterdef recognizes a master which does not recognize the masterdef

Possibly drop_master_repgroup was run at a master site but remove_master_databases was not run at master definition site for that master.

How to fix the Error ORA-23356: masterdef recognizes a master which does not recognize the masterdef ?

You can fix this error in Oracle by following the below steps

Run remove_master_databases from master definition site to remove the appropriate master (see associated error messages).