Was working with site today trying to upgrade their OES2sp1 server to OES2sp2. We where also doing a SuSE10sp2 to sp3 in place upgrade at same time. Got to the OES update portion and got the following error:

Checking if server is ready to service requests...Name resolution failed:Error = -634

The instance at /etc/opt/novell/eDirectory/conf/nds.conf is upgraded successfully

ERROR: /opt/novell/eDirectory/bin/ndsconfig return value = 56

This server is one of 8 OES2 servers in the tree, but runs his DNS/DHCP and iprint environment. He was able to abort the update and bring the server back online using a mirror disk he had prepared before the upgrade, so server is back to where it was before the we tried the upgrade. He really wants to either migrate these services off this server, or get the OES2 to latest version but can't migrate due to prerequisites require for the OES11 migration tool. Edirectory was checked before upgrade and time was in synch. We did get time synch error before we got this error in the process as well.