[oracle@ft101db ~]$ vncserver
You will require a password to access your desktops.
Password:
Verify:
xauth:  creating new authority file /home/oracle/.Xauthority

WARNING: The first attempt to start Xvnc failed, possibly because the font
catalog is not properly configured.  Attempting to determine an appropriate
font path for this system and restart Xvnc using that font path ...
Could not start Xvnc.

/usr/bin/Xvnc: symbol lookup error: /usr/bin/Xvnc: undefined symbol: pixman_composite_trapezoids
/usr/bin/Xvnc: symbol lookup error: /usr/bin/Xvnc: undefined symbol: pixman_composite_trapezoids

[oracle@ft101db .vnc]$ ls -alrt
total 20
-rw-------  1 oracle oinstall    8 Feb 27 09:53 passwd
drwx------. 6 oracle oinstall 4096 Feb 27 09:53 ..
drwxr-xr-x  2 oracle oinstall 4096 Feb 27 09:53 .
-rw-r--r--  1 oracle oinstall    6 Feb 27 09:53 ft101db:1.pid
-rw-r--r--  1 oracle oinstall  194 Feb 27 09:53 ft101db:1.log
[oracle@ft101db .vnc]$ vi      ft101db:1.log  

/usr/bin/Xvnc: symbol lookup error: /usr/bin/Xvnc: undefined symbol: pixman_composite_trapezoids
/usr/bin/Xvnc: symbol lookup error: /usr/bin/Xvnc: undefined symbol: pixman_composite_trapezoids
~
挂载Oracle Linux Server 6.2 iso，配置yum后（配置参考http://blog.itpub.net/35489/viewspace-1263896/），运行： 
# yum install  pixman pixman-devel libXfont  

再次运行： 
[oracle@ft101db ~]$ vncserver
New 'ft101db:1 (oracle)' desktop is ft101db:1
Creating default startup script /home/oracle/.vnc/xstartup
Starting applications specified in /home/oracle/.vnc/xstartup
Log file is /home/oracle/.vnc/ft101db:1.log


最后做一些VNC配置。