Are you using  DNS or /etc/hosts for name resolution?

If /etc/hosts is being used, do you have the file /etc/netsvc.conf with the
single line content "hosts=local" (no spaces)?
if you are using DNS, can you resolve your host's name correctly via an
nslookup?

If you are using DNS and the name resolution isn't working, debug the DNS.
If you are using /etc/hosts and you have the /etc/netsvc.conf file, then
you can fool stupid Tivoli by copying nslookup to nslookup.ORIG and
substituting the following file for nslookup:

#!/bin/ksh
echo "Name: <hostname>.<domainname>"
echo "Address: <ipaddrofhost"

where hostname=name of your managed node.

In effect this fools Tivoli because the response is what the dump beast is
expecting from nslookup.

Regards,
ken
kgarst AT giantofmaryland DOT com