You are trying to update Oracle Enterprise Linux and get a error similar like this.
[root@server2 ~]# yum update Loaded plugins: security Traceback (most recent call last): File "/usr/bin/yum", line 29, in <module> yummain.user_main(sys.argv[1:], exit_code=True) File "/usr/share/yum-cli/yummain.py", line 285, in user_main errcode = main(args) File "/usr/share/yum-cli/yummain.py", line 136, in main result, resultmsgs = base.doCommands() (..) File "/usr/lib/python2.6/site-packages/yum/misc.py", line 1141, in cElementTree_iterparse _cElementTree_import() File "/usr/lib/python2.6/site-packages/yum/misc.py", line 1136, in _cElementTree_import import cElementTree ImportError: No module named cElementTree
One cause of this error is that you have set a Oracle Environment (for example to ASM to handle your RAC Cluster). When you unset the LD_LIBRARY_PATH which is pointing to the CRS or Oracle Home the yum command is working.
[root@server2 ~]# echo $LD_LIBRARY_PATH /u01/app/12.1.0/grid/lib [root@server2 ~]# unset LD_LIBRARY_PATH [root@server2 ~]# yum update Loaded plugins: security repo id repo name status ol6_UEK_latest Latest Unbreakable Enterprise Kernel for Oracle Linux 6Server (x86_64) 239 ol6_latest Oracle Linux 6Server Latest (x86_64) 22.436 repolist: 22.675
Hope this helps
