apache 2.0.46版本通过IP地址可以正常访问,通过域名访问出错

我想请问一下,apache:2.0.46-46,linux os kernel:2.4.21,通过IP访问时可以正常访问,通过域名访问出错,在apache日志出现以下错误

QUOTE:
Directory index forbidden by rule: /var/www/html/, referer: http://www.xxxx.com/200705/20070515111926.html

请问是由于什么原因造成的

期间又有如此报错,是哪方面导致的呢

QUOTE:
[notice] caught SIGTERM, shutting down
[notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[warn] No JkShmFile defined in httpd.conf. Using default /etc/httpd/logs/jk-runtime-status
[notice] Digest: generating secret for digest authentication ...
[notice] Digest: done
[warn] No JkShmFile defined in httpd.conf. Using default /etc/httpd/logs/jk-runtime-status
PHP Warning:  Unknown(): Unable to load dynamic library '/usr/lib/php4/oci8.so' - /usr/lib/php4/oci8.so: undefined symbol: OCINlsCharSetNameToId in Unknown on line 0
PHP Warning:  Unknown(): Unable to load dynamic library '/usr/lib/php4/pgsql.so' - libpq.so.3: cannot open shared object file: No such file or directory in Unknown on line