How to upgrade Oracle 11g 64bit from 11.1.0.6 to 11.1.0.7

Jephe Wu - http://linuxtechres.blogspot.com

Objective: easily upgrade Oracle 11g to 11.1.0.7
Environment: CentOS 5.5 64bit, Oracle 11g 11.1.0.6

Steps:

1. ssh into server as user 'oracle', then type in 'vncserver'
2. From windows pc, use vncviewer to connect to server.
3. at xterm windows, run Oracle installer, use the same path as what 11.1.0.6 is using. You cannot choose the different path.
4. follow the screen instruction to finish upgrading
5. use dbua command to finished database upgrading
6. lsnrctl start, sqlplus / as sysdba ; alter system register
7. database should has already been started by dbua itself.