Here is my listener.ora

LISTENER_CATLMSXT501 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = catlmsxt501v)(PORT = 1521)(IP = FIRST))
)
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.62.206.121)(PORT = 1521)(IP = FIRST))
)
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
)
)
)

and tnsnames.ora
TPHXCCO2 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = catlmsxt501v.corp.cox.com)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = TPHXCCO)
(INSTANCE_NAME = TPHXCCO2)
)
)

TPHXCCO1 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = catlmsxt500v.corp.cox.com)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = TPHXCCO)
(INSTANCE_NAME = TPHXCCO1)
)
)

TPHXCCO =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = catlmsxt500v.corp.cox.com)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = catlmsxt501v.corp.cox.com)(PORT = 1521))
(LOAD_BALANCE = yes)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = TPHXCCO)
)
)

LISTENERS_TPHXCCO =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = catlmsxt500v.corp.cox.com)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = catlmsxt501v.corp.cox.com)(PORT = 1521))
)



TATLCCO2 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = catlmsxt501v.corp.cox.com)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = TATLCCO)
(INSTANCE_NAME = TATLCCO2)
)
)

TATLCCO1 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = catlmsxt500v.corp.cox.com)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = TATLCCO)
(INSTANCE_NAME = TATLCCO1)
)
)

TATLCCO =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = catlmsxt500v.corp.cox.com)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = catlmsxt501v.corp.cox.com)(PORT = 1521))
(LOAD_BALANCE = yes)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = TATLCCO)
)
)


LISTENERS_TATLCCO =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = catlmsxt500v.corp.cox.com)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = catlmsxt501v.corp.cox.com)(PORT = 1521))
)