OAM and Sharepoint 2013 integration

I'm using Sharepoint server 2013 running on Windows Server 2012R2 and IIS 8.5. I want to integrate sharepoint 2013 with OAM(Oracle Access Manager) for single sign on purpose. I followed some guides on the internet, but it all use webgate 10g to communicate with OAM server and integrate with sharepoint 2010. I tried to install webgate 10g on IIS 8.5 but it seem doesn't work, maybe compatibility problem. Then i tried install webgate 11g but it doesn't work too. Here is my event viewer log when i browse the web application that is protected by webgate 11g:

And here is my log in oblog in webgate folder:

2016/04/27@00:12:30.754000 8216 5736 INIT ERROR 0x000003B6 base\oblistrwutil.cpp:225 "Could not read file" filename^e:\oracle\product\11.1.1\as_2\webgate\iis/oblix/lang/en-us/globalmsg.xml
2016/04/27@00:12:30.755000 8216 5736 INIT ERROR 0x000003B6 base\oblistrwutil.cpp:225 "Could not read file" filename^e:\oracle\product\11.1.1\as_2\webgate\iis/oblix/lang/fr-fr/globalmsg.xml
2016/04/27@00:12:30.755000 8216 5736 INIT ERROR 0x000003B6 base\oblistrwutil.cpp:225 "Could not read file" filename^e:\oracle\product\11.1.1\as_2\webgate\iis/oblix/lang/de-de/globalmsg.xml
2016/04/27@00:12:30.755000 8216 5736 INIT ERROR 0x000003B6 base\oblistrwutil.cpp:225 "Could not read file" filename^e:\oracle\product\11.1.1\as_2\webgate\iis/oblix/lang/es-es/globalmsg.xml
2016/04/27@00:12:30.755000 8216 5736 INIT ERROR 0x000003B6 base\oblistrwutil.cpp:225 "Could not read file" filename^e:\oracle\product\11.1.1\as_2\webgate\iis/oblix/lang/it-it/globalmsg.xml
2016/04/27@00:12:30.755000 8216 5736 INIT ERROR 0x000003B6 base\oblistrwutil.cpp:225 "Could not read file" filename^e:\oracle\product\11.1.1\as_2\webgate\iis/oblix/lang/ja-jp/globalmsg.xml
2016/04/27@00:12:30.755000 8216 5736 INIT ERROR 0x000003B6 base\oblistrwutil.cpp:225 "Could not read file" filename^e:\oracle\product\11.1.1\as_2\webgate\iis/oblix/lang/ko-kr/globalmsg.xml
2016/04/27@00:12:30.755000 8216 5736 INIT ERROR 0x000003B6 base\oblistrwutil.cpp:225 "Could not read file" filename^e:\oracle\product\11.1.1\as_2\webgate\iis/oblix/lang/zh-cn/globalmsg.xml
2016/04/27@00:12:30.755000 8216 5736 INIT ERROR 0x000003B6 base\oblistrwutil.cpp:225 "Could not read file" filename^e:\oracle\product\11.1.1\as_2\webgate\iis/oblix/lang/zh-tw/globalmsg.xml
2016/04/27@00:12:30.755000 8216 5736 INIT ERROR 0x000003B6 base\oblistrwutil.cpp:225 "Could not read file" filename^e:\oracle\product\11.1.1\as_2\webgate\iis/oblix/lang/pt-br/globalmsg.xml
2016/04/27@00:12:30.858000 8216 5736 INIT ERROR 0x000003B6 base\oblistrwutil.cpp:225 "Could not read file" filename^e:\oracle\product\11.1.1\as_2\webgate\iis/config/oblog_config.xml
2016/04/27@00:12:33.213000 8216 1068 CONNECTIVITY ERROR 0x0000211E ..\src\obsocket.cpp:430 "Invalid hostname for OAM Server defined." 2016/04/27@00:12:35.495000 8216 1068 CONNECTIVITY ERROR 0x0000211E ..\src\obsocket.cpp:430 "Invalid hostname for OAM Server defined." 2016/04/27@00:12:37.757000 8216 1068 CONNECTIVITY ERROR 0x0000211E ..\src\obsocket.cpp:430 "Invalid hostname for OAM Server defined." 2016/04/27@00:12:40.016000 8216 1068 CONNECTIVITY ERROR 0x0000211E ..\src\obsocket.cpp:430 "Invalid hostname for OAM Server defined." 2016/04/27@00:12:40.016000 8216 5736 CONFIG ERROR 0x00000505 ..\src\obconfig.cpp:747 "ObAccess exception thrown" raw_code^0
2016/04/27@00:12:40.016000 8216 5736 ACCESS_GATE FATAL 0x00001520 ..\src\iisentry_web_gate.cpp:619 "Exception thrown during WebGate initialization" 2016/04/27@00:12:40.017000 8216 5736 ACCESS_GATE FATAL 0x0000182C ..\src\iisentry_web_gate.cpp:620 "The AccessGate is unable to contact any Access Servers." raw_code^301
2016/04/27@00:12:40.017000 8216 5736 CONFIG FATAL 0x0000181C ..\src\obconfig.cpp:863 "Oracle AccessGate API is not initialized." raw_code^204
2016/04/27@00:12:40.017000 8216 5736 CONFIG FATAL 0x0000181C ..\src\obconfig.cpp:863 "Oracle AccessGate API is not initialized." raw_code^204
2016/04/27@00:12:40.018000 8216 5736 CONFIG FATAL 0x0000181C ..\src\obconfig.cpp:863 "Oracle AccessGate API is not initialized." raw_code^204
2016/04/27@00:12:40.018000 8216 5736 CONFIG FATAL 0x0000181C ..\src\obconfig.cpp:863 "Oracle AccessGate API is not initialized." raw_code^204
2016/04/27@00:12:40.018000 8216 5736 CONFIG FATAL 0x0000181C ..\src\obconfig.cpp:863 "Oracle AccessGate API is not initialized." raw_code^204
2016/04/27@00:12:40.018000 8216 5736 CONFIG FATAL 0x0000181C ..\src\obconfig.cpp:863 "Oracle AccessGate API is not initialized." raw_code^204
2016/04/27@00:12:40.018000 8216 5736 CONFIG FATAL 0x0000181C ..\src\obconfig.cpp:863 "Oracle AccessGate API is not initialized." raw_code^204
2016/04/27@00:12:40.019000 8216 5736 CONFIG FATAL 0x0000181C ..\src\obconfig.cpp:863 "Oracle AccessGate API is not initialized." raw_code^204

I have a question, On webserver IIS, to communicate with OAM Server i just need to install Webgate or need to be install other components? I'm really confused, please help me, thank you all.

You just need to install and Configure WebGate on IIS Webserver.

The OAM hostname is either incorrect or not getting resolved from your IIS box.

2016/04/27@00:12:33.213000 8216 1068 CONNECTIVITY ERROR 0x0000211E ..\src\obsocket.cpp:430 "Invalid hostname for OAM Server defined." 2016/04/27@00:12:35.495000 8216 1068 CONNECTIVITY ERROR 0x0000211E ..\src\obsocket.cpp:430 "Invalid hostname for OAM Server defined."