php_oci8.dll doesn't work

[he_guai]

I install php 4.0.8-dev and OmniHTTPD.
if the php.ini is:
;extension=php_oci8.dll
extension=php_oracle.dll
it works.

if it changes to:
extension=php_oci8.dll
;extension=php_oracle.dll
or
extension=php_oci8.dll
extension=php_oracle.dll
it doesn't work.(all *.php doesn't work,it shows timeout.)