in listener.ora,
specify listener description first.

ECQ2 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = ecq2.ges.xxxxx.com)(PORT = 1527))
)
)
SID_LIST_ECQ2 =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = ECQ2.GES.XXXXX.COM)
(ORACLE_HOME = /ECQ2/oh/1020)
(SID_NAME = ECQ2)
)
)


And also try specifying ip adress rather than hostname in your tns entry in your tnsnames.ora file.