Intelligent Agent and OEM

I find the node, but not coupling the DataBase.
My configuration
- OEM Oracle 9i (Windows 2000)
- DB Oracle9 and 8i (Solaris 8 and Windows 2000)

hello,
I have a problem with the installation of a agent in OEM on linux (Fedora).
this error has occur :
Oracle9i Enterprise Edition Release 9.0.1.5.0 - Production
With the Partitioning option
JServer Release 9.0.1.4.0 - Production
SQL> SQL> SQL> WEBSITE Creation FAILED = EM Website ERR:Host not found
CREATE DEFAULT WEBSITE FAILED : ORA-20998: Host not found
BEGIN
ERROR at line 1:
ORA-20999: CREATE DEFAULT WEBSITE FAILED : ORA-20998: Host not found
ORA-06512: at line 234
Disconnected from Oracle9i Enterprise Edition Release 9.0.1.5.0 - Production
With the Partitioning option
JServer Release 9.0.1.4.0 - ProductionWebsite target creation script failed.
Apr 19, 2004 11:26:04 AM oracle.agent.ConfigureAgent startAgentService
INFO: Starting the agent...
Starting the agent...TZ set to Europe/ParisOracle Enterprise Manager 10g Release 10.1.0.2.0.
Copyright (c) 1996, 2004 Oracle Corporation. All rights reserved.Starting agent .................... failed.
Apr 19, 2004 11:26:38 AM oracle.agent.ConfigureAgent startAgentService
INFO: Started agent Successfully
Started agent Successfully
The Management Agent Configuration Assistant has failed. The following failures were recorded:
Enterprise Manager Website target configuration failed.
Agent Service Failed to start.
Exit status: 1
Configuration assistant "Agent Configuration Assistant" failed
Can you help me please to resolve this problem.
ps:
OEM is succesfully installed in my computer.

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