title: Cannot login to 'postgres' database as 'postgres' user
body: <p>I am unable to login to 'postgres' database as 'postgres' user.
  OS : REHL Server release 6.3
  Postgresql version: 8.4
  There is a Database 'jiradb' which is used as a Backend for JIRA 6.0.8. </p>
  
  <p>When I give the command</p>
  
  <p>[root ~]#<strong>psql postgres postgres</strong><br>
  Password for user postgres: *******<br>
  <strong><em>psql: FATAL: could not open relation with OID 2696</em></strong></p>
  
  <p>How do I fix this error and login to 'postgres' database. Please ask me if you need more details. I am new to postgres DB.</p>
  
  <p>Thanks.</p>