title: Issue with DB2 database connection with uname/password
body: <p>In Ubuntu terminal when i do:
  $ db2 connect to sample user db2inst1 using db2inst1 </p>
  
  <p>I get the response: </p>
  
  <p>The database server was unable to perform authentication because security related database manager files on the server do not have the required operating system permissions. SQLSTATE=08001</p>
  
  <p>I thought there is user privilege issues so tried using 
  db2iupdt to update instance to db2inst1 but got the error 
  db2iupdt command not found.</p>
  
  <p>Any advice would be great.</p>
  
  <p>Thanks</p>