yum update fails with Python Error – ImportError: No Module Named CElementTree

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…

New preinstall package for 12cR1

Oracle has also released a new preinstall RPM package for Linux. You can install it with yum: [root@# etc]# yum install oracle-rdbms-server-12cR1-preinstall.x86_64 The Package has this dependency: Dependencies Resolved =====================================================================================================================================================================================  Package                                                      Arch                           Version                                        Repository                          Size ===================================================================================================================================================================================== Installing:  oracle-rdbms-server-12cR1-preinstall                         x86_64                         1.0-8.el6                                      ol6_latest                          15 k Installing for dependencies:  cloog-ppl                                                    x86_64                         0.15.7-1.2.el6                                 ol6_latest                          93 k  compat-libcap1                                               x86_64                         1.10-1                                        …

Fehler rhn_register das dieses System schon registriert ist

Nach z.B. dem Klonen eines Oracle Enterprise Linux System oder Redhat System kann es durchaus vorkommen, das der Fehler „This System profile has already been registerd“ kommt. Der Fehler entsteht weil die UUID des System eigentlich die des alten Systems ist und erneuert gehört. [root@vmsvrocm02 ~]# cat /etc/sysconfig/rhn/up2date-uuid uuid[comment]=Universally Unique ID for this server rhnuuid=1c9a5606-6896-11e2-a8ac-00505692378a…