首先要装Oracle客户端，数据库放在哪里就看你的情况了。
在项目中加入SubSonic.dll的引用；
在项目web.config的configuration中加入
<configSections>
<section name="SubSonicService" type="SubSonic.SubSonicSection, SubSonic" requirePermission="false"/>
</configSections>
<connectionStrings>
<clear/>
<add name="OracleDataConnection" connectionString="Data Source=yourdataspace;Persist Security Info=True;User ID=yourid;Password=yourpassword"/>
</connectionStrings>
<SubSonicService defaultProvider="OracleData">
<providers>
<clear/>
<add name="OracleData" type="SubSonic.OracleDataProvider,SubSonic" connectionStringName="OracleDataConnection" generatedNamespace="OracleDataDomain"/>
</providers>
</SubSonicService>
然后SubSonic DAL，参照http://hi.baidu.com/beloving/blog/item/472d17ce1ed17e3ab600c8a9.html