Want to remove global_name from DB links (Oracle 11g)
To remove DB_DOMAIN from DB_LINKS.

ALTER SYSTEM SET global_names = false SCOPE = SPFILE;
ALTER SYSTEM SET db_domain = '' SCOPE = SPFILE;
UPDATE GLOBAL_NAME SET GLOBAL_NAME = [Name without db_domain];


then restart, DB and Listener.

However, I still do not know how to use this with domain.