Sorry guys, got busy with other things. Here is the info you requested.

Listener.ora:
LISTEN_1521 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST=
(ADDRESS = (PROTOCOL = TCP)(HOST = IP ADDRESS)(PORT = 1521))
(SERVICE_NAME = SID)
)

listen.log:


type='UNKNOWN' level='16' host_id='hostname'
host_addr='IP ADDRESS'>
18-JUN-2009 10:25:50 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=hostname)(USER=user 'A'))(COMMAND=status)(ARGUMENTS=64)(SERVICE=listen_1521)(VERSION=185599744)) * status * 0




I can connect as user oracle via ssh.

when I am in sqlplus and try to connect remotely I get the error when the listener is started as the user 'A'.
SQL> conn user/[email protected];
ERROR:
ORA-12537: TNS:connection closed