TNS-01199：Warning! Different databases have registered the same service

解决方法：In a multitenant container database (CDB) setup, this error indicates the usage of identical Oracle Net service name by multiple CDBs. The default Oracle Net service name for a pluggable database (PDB) in a CDB is derived from PDB name, so ensure that multiple CDBs registering with the same listener are not using identical PDB names. However, this error can be safely ignored if the usage of identical Oracle Net service name across multiple databases is intentional.