Infrastructure Software

I just upgraded up2date to move from rhn to oracle support. when I ran up2date --register it said my system already appears to be registered.
When I try to run other up2date commands I get this:

root@s0141231:/u01/install/GRID/rpms-> up2date nox show-channels
Error communicating with server. The message was:
Name or service not known

How do I troubleshoot this ? Is there a log to see what exactly is failing ?

We have a proxy server Here's my configuration (items 22 and 23 asterisked out) :

0. adminAddress ['root@localhost']
1. debug No
2. disallowConfChange ["'noReboot', 'sslCACert', 'useNoSSLForPackages', 'noSSLS
3. enableProxy Yes
4. enableProxyAuth Yes
5. enableRollbacks No
6. fileSkipList []
7. forceInstall No
8. gpgKeyRing /etc/sysconfig/rhn/up2date-keyring.gpg
9. headerCacheSize 40
10. headerFetchCount 10
11. httpProxy yes
12. isatty Yes
13. keepAfterInstall No
14. networkRetries 5
15. networkSetup Yes
16. noBootLoader No
17. noReboot No
18. noReplaceConfig Yes
19. noSSLServerURL http://linux-update.oracle.com/XMLRPC
20. pkgSkipList ['kernel', 'kernel-devel', 'kernel-hugemem', 'kernel-huge
21. pkgsToInstallNotUp ['kernel', 'kernel-modules', 'kernel-devel']
22. proxyPassword *******************
23. proxyUser ********************
24. removeSkipList ['kernel*']
25. retrieveOnly No
26. retrieveSource No
27. rhnuuid 5ea98d4a-fbbb-11da-9370-001438a7857d
28. serverURL https://linux-update.oracle.com/XMLRPC
29. showAvailablePacka No
30. sslCACert /usr/share/rhn/ULN-CA-CERT
31. storageDir /var/spool/up2date
32. systemIdPath /etc/sysconfig/rhn/systemid
33. updateUp2date Yes
34. useGPG Yes
35. useNoSSLForPackage No
36. useRhn Yes
37. versionOverride

Any help would be appreciated, thanks