title: Can't login as sysdba in oracle sqlplus
body: <p>'hello </p>
  
  <p>I am trying to login  locally installed oracle 11g database from my windows machine using </p>
  
  <pre><code>system / as sysdba 
  </code></pre>
  
  <p>Its asking for username and password , but In my knowledge its using default windows account and will login without any prompt . why its prompting here and the current account is indeed a memeber of oradba group .</p>
  
  <p>2) I tried to connect using </p>
  
  <p><code>conn /as sysdba</code> </p>
  
  <p>its logging inside sqlplus without any prompt</p>
  
  <p>Whats happening in both cases , can someone give me a quick heads up ? </p>
  
  <p>thanks </p>
  
  <p><strong>Update 1</strong> </p>
  
  <p><a href="https://i.stack.imgur.com/w0VWU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/w0VWU.png" alt="enter image description here"></a></p>