装Oracle 9i 起不了XWindows

请各位兄弟帮忙
我在安ORACLE 9I时，按照http://www.fanqiang.com/a2/b2/20 ... 了.bash_profile文件
# Oracle Environment
export ORACLE_BASE=/opt/oracle
export ORACLE_HOME=/opt/oracle/product/9.0.1
export ORACLE_SID=test
export ORACLE_TERM=xterm
#export TNS_ADMIN= 设置这个变量，如果 sqlnet.ora, tnsnames.ora等不在$ORACLE_HOME/network/admin 目录下。
export NLS_LANG=AMERICAN;
export ORA_NLS33=$ORACLE_HOME/ocommon/nls/admin/data
LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib:/usr/openwin/lib
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/td/lib:/usr/ucblib:/usr/local/lib
export LD_LIBRARY_PATH
# Set shell search paths:
PATH=/bin:/usr/bin:/usr/sbin:/etc:/opt/bin:/usr/ccs/bin:/usr/openwin/bin:/opt/local/GNU/bin
PATH=$PATH:/opt/local/bin:/opt/NSCPnav/binORACLE_HOME/bin
PATH=$PATH:/usr/local/samba/bin:/usr/ucb:
export PATH
# CLASSPATH must include the following JRE locations:
CLASSPATH=$ORACLE_HOME/JREORACLE_HOME/jlibORACLE_HOME/rdbms/jlib
CLASSPATH=$CLASSPATHORACLE_HOME/network/jlib
重登录，就起不了XWINDOWS了，我将ORACLE用户删了，也起不了XWINDOWS，请各位帮忙，我如何能修复，XWINDOWS，谢谢　　　　　　

这和ORACLE没有关系吧，出现什么提示?　　　　　　

这是/var /log/XFree86.0.log文件的一部份，谢谢

(WW) xf86AcquireGART: AGPIOC_ACQUIRE failed (Device or resource busy)
(EE) GARTInit: AGPIOC_INFO failed (Invalid argument)
(EE) I810(0): AGP GART support is not available.  Make sure your kernel has
        agpgart support or that the agpgart kernel module is loaded.
(II) UnloadModule: "i810"
(II) UnloadModule: "ddc"
(II) Unloading /usr/X11R6/lib/modules/libddc.a
(II) UnloadModule: "int10"
(II) Unloading /usr/X11R6/lib/modules/linux/libint10.a
(II) UnloadModule: "vbe"
(II) Unloading /usr/X11R6/lib/modules/libvbe.a
(II) UnloadModule: "vgahw"
(II) Unloading /usr/X11R6/lib/modules/libvgahw.a
(EE) Screen(s) found, but none have a usable configuration.

Fatal server error:
no screens found

When reporting a problem related to a server crash, please send
the full server output, not just the last messages.
This can be found in the log file "/var/log/XFree86.0.log".
Please report problems to xfree86@xfree86.org.　　　　　　

重新配置一下你的Xwindows

XF86Configure

如果你用的是Redhat的话。