title: how can I solve ora 12560 TNS protocol adaptor error
body: <p>I'm running ORACLE 11gR2 through Windows server 2008 R2. Because of some reason shutdown database with "shutdown immediate" command, but when I need to startup again database, this error message is appear:
  "ORA-12560: TNS:protocol adapter error"
  about ORA 12560 I consumed many time through internet for finding soloution but all of the is very basic guide that could not solve my problem. please consider to my problem with following below image:
  1. when I want to startup database:
  <a href="https://i.stack.imgur.com/AG8LO.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/AG8LO.jpg" alt="enter image description here"></a></p>
  
  <ol start="2">
  <li><p>set oracle_sid in command prompt and check in windows environment variables:
  <a href="https://i.stack.imgur.com/sP2i1.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/sP2i1.jpg" alt="enter image description here"></a></p></li>
  <li><p>check lsnrctl status:<a href="https://i.stack.imgur.com/uDzkh.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uDzkh.jpg" alt="enter image description here"></a></p></li>
  <li><p>tnsping:
  <a href="https://i.stack.imgur.com/4Gfnx.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4Gfnx.jpg" alt="enter image description here"></a></p></li>
  <li><p>check windows oracle service:
  <a href="https://i.stack.imgur.com/HrLZC.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/HrLZC.jpg" alt="enter image description here"></a></p></li>
  </ol>
  
  <p>so, according those images everything looks fine but my database wont to start again I will be thankful if I have your clear, correct and tested solution for my problem</p>