title: asp.net application not connecting to oracle 11g even after installing oracle instant client for 11g
body: <p>I have a asp.net mvc application which is using oracle 11g database. In development machine every thing worked fine, but while deploying it in production server asp.net application is not able to connect to the database server. It is always throwing an empty exception. </p>
  
  <p>I wrote also a simple console application to test the db connectivity. It is also not working. Then I realized it is because that the machine doesn't have a oracle client installed. so I installed Oracle instant client for 11g database 32 bit version. After this the console application started working but the web application still could not connect.</p>
  
  <p>I google lot and finally decided to analyse using process monitor. In process monitor I found that the web application (iis) is looking for an oraclient12.dll.</p>
  
  <p>This oraclient12.dll is part of oracle client for 12c database. I can't understand why it is looking for this dll.</p>
  
  <p><img src="https://i.stack.imgur.com/70G7u.jpg" alt="enter image description here"></p>
  
  <p>After installing oracle database client for 12g, the above issue with oraclient12.dll got fixed. but iis is now not able to locate oraclsce12.dll.
  I searched the whole file-system for this file but could not find. </p>
  
  <p>does anyone know what should i install to get oraclsce12.dll.</p>
  
  <p><img src="https://i.stack.imgur.com/QOVFA.jpg" alt="enter image description here"></p>
  
  <p>Thanks,
  Sujith</p>