title: Web Interface lost connection after I alter the oracle password of my database
body: <p>My company has a database for vehicle tracking system. And It has a website for user to log on and use.</p>
  
  <p>After I change the sys and the main user password through "ALTER USER --- identified by' command. The website login became dysfunctional. Our DBA just quit so I have no idea how to troubleshoot.</p>
  
  <p>Is there any guideline I can use?</p>