title: Caused by: java.lang.ClassNotFoundException: org.hibernate.service.ServiceRegistry
body: <p>so it's been 4 days now that Tomcat won't launch for some reason, tried everything i could but Nothing really worked for me, one of the errors i'm getting is as mentionned in the title, but i'm have a lot more than those (here is the full error log <a href="https://stackoverflow.com/questions/42693346/apache-tomcat-failed-to-start-lifecycle-exception">Apache TomCat failed to start lifecycle exception</a>)</p>
  
  <p>So first i thought i didn't have the class ServiceRegistry but i do have it <a href="https://i.stack.imgur.com/C3JBO.png" rel="nofollow noreferrer">As you can see here</a></p>
  
  <p><strong>UPDATE</strong><br>
  So i added hibernate core into the lib folder Under apache tomcat installation and the server started again, but it's not mapping my servlets for some reason</p>
  
  <p>**UPDATE 2 **<br>
  I  copied ojdbc6.jar and hibernate -core into the lib folder of tomcat and now it works fine<br>
  Thanks for your help lads.</p>