If its one database the keep the listener to

LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = hontsit-test)(PORT = 1521))
)

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = hmdw.world)
(ORACLE_HOME = E:\ORA9I)
(SID_NAME = hmdw)
)
)

and start the agent for ORA9I not for OEM