Hi Gurus, I'm trying to upgrade my test 9.2.0.8 rac to 10.1 rac. I cannot upgrade to 10.2 because of RAM limitations on my test RAC. 10.1 Clusterware software was successfully installed and the daemons are up with OCR and voting disk created. Then during the installation of RAC software at the end, root.sh needs to be run. When I run root.sh, it gave the error: while loading shared libraries: libpthread.so.0: cannot open shared object file: No such file or directory. I have libpthread.so.0 in /lib. I looked up on metalink and found Doc ID: 414163.1 . I unset the LD_ASSUME_KERNEL in vipca (unsetting of LD_ASSUME_KERNEL was not required in srvctl because there was no LD_ASSUME_KERNEL in srvctl). Then I tried to run vipca manually. I receive the following error: Error 0(Native: listNetInterfaces:[3]). I'm able to see xclock and xeyes. So its not a problem with x. oifcfg iflist eth0 192.168.2.0 eth1 10.0.0.0 oifcfg getif eth1 10.0.0.0 global cluster_interconnect eth1 10.1.1.0 global cluster_interconnect eth0 192.168.2.0 global public cat /etc/hosts 192.168.2.3 sunny1pub.ezhome.com sunny1pub 192.168.2.4 sunny2pub.ezhome.com sunny2pub 192.168.2.33 sunny1vip.ezhome.com sunny1vip 192.168.2.44 sunny2vip.ezhome.com sunny2vip 10.1.1.1 sunny1prv.ezhome.com sunny1prv 10.1.1.2 sunny2prv.ezhome.com sunny2prv My questions are: should ping on sunny1vip and sunny2vip be already working? As of now they dont work. if you look at oifcfg getif, I initially had eth1 10.0.0.0 global cluster_interconnect,eth0 192.168.2.0 global public then I created eth1 10.1.1.0 global cluster_interconnect with setif. Should it be 10.1.1.0 or 10.0.0.0. I looked at the subnet calculator and it says for 10.1.1.1, 10.0.0.0 is the subnet. In metalink they had used 10.10.10.0 and hence I used 10.1.1.0 Any ideas on resolving this issue would be very much appreciated. I had been searching on oracle forums, google, metalink but all of them refer to DOC Id 414163.1 but it does n't seem to work. Please help. Thanks in advance. -- //www.freelists.org/webpage/oracle-l