Oracle Error Message
ORA-23398: user name “string” at database link “string” does not match local user name “string”
Reason for the Error
the user name of the replication administration user at the local node and the user name at the node corresponding to the database link are not the same. Symmetric replication expects the two users to be the same.
Solution
Ensure that the user ID of the replication administration user at the local node and the user ID at the node corresponding to the database link are the same.