title: Oracle 10g SQL plus username, password + Host string unkown
body: <p>I have just installed Oracle 10g database and also oracle developer suit, which is installed as DevSuiteHome1 in my computer. I could not use SQL plus because I dont know the exact username, password and host string to connect. During installation I did not ask to enter any username &amp; password. Then what would be the username,password + host string? Help me out of this. 
  <img src="https://i.stack.imgur.com/l3OR0.jpg" alt="enter image description here"></p>