Not able to load oci8.dll extension

[SmartPHP]

Can some one tell me how can i load OCI8.dll.

in my php.ini i have uncommented the line for oci8 dll,still i'm not able to load the dll.

[mwasif]

Did you set the correct value of extension_dir in php.ini? And do you OCI8.dll in the extensions directory?

[SmartPHP]

Did you set the correct value of extension_dir in php.ini? And do you OCI8.dll in the extensions directory?

yes,my path of extension_dir is correct..i'm able to load other extensions.
OCI8.dll is also present in my extension directory.