Oracle Database Discussions

Please help me!! I got this message when I tried to start the listener:

[oracle@serverbd ~]$ lsnrctl start

LSNRCTL for Linux: Version 10.2.0.3.0 - Production on 04-MAY-2010 08:26:38

Copyright (c) 1991, 2006, Oracle. All rights reserved.

Starting /u01/app/oracle/oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 10.2.0.3.0 - Production
System parameter file is /u01/app/oracle/oracle/product/10.2.0/db_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/oracle/product/10.2.0/db_1/network/log/listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=xxxx.yyyyy.zzzz)(PORT=1521)))
TNS-12560: TNS:protocol adapter error
TNS-00583: Valid node checking: unable to parse configuration parameters


Listener failed to start. See the error message(s) above...

****

LSNRCTL> status
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 2: No such file or directory
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=xxxx.yyyyy.zzzz)(PORT=1521)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 111: Connection refused

****

I have this into listener.ora

# listener.ora Network Configuration File: /u01/app/oracle/oracle/product/10.2.0/db_1/network/admin/listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u01/app/oracle/oracle/product/10.2.0/db_1)
(PROGRAM = extproc)
)
)

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = xxxx.yyyyy.zzzz)(PORT = 1521))
)
)



INBOUND_CONNECT_TIMEOUT_LISTENER

****

And this into tnsnames.ora

# tnsnames.ora Network Configuration File: /u01/app/oracle/oracle/product/10.2.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.

UIF =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = xxxx.yyyyy.zzzz)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = uif)
)
)


EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
)
)

****

I tried to recreate the listener with netmgr, netca but I got this:

[oracle@serverbd bin]$ ./netmgr
**** ORACLE_HOME environment variable not set!
ORACLE_HOME should be set to the main
directory that contains Oracle products.
Set and export ORACLE_HOME, then re-run.
[oracle@serverbd bin]$

[oracle@serverbd bin]$ ./netca
**** ORACLE_HOME environment variable not set!
ORACLE_HOME should be set to the main
directory that contains Oracle products.
Set and export ORACLE_HOME, then re-run.
[oracle@serverbd bin]$

Just in case, I could startup normally the database.

What can I do???