title: Oracle DB 12c: sqlplus as sysdba causes ORA-01017
body: <p>Good day. If i do <code>sqlplus user/oracle@db</code> i have successfull connection with db.</p>
  
  <p>If i do <code>sqlplus user/oracle@db as sysdba</code> i  have error ORA-01017.</p>
  
  <p>But at the server this command executes successfully.</p>
  
  <p>My tnsnames.ora:</p>
  
  <pre><code>db =
    (DESCRIPTION =
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.100.175)(PORT = 1521))
      )
      (CONNECT_DATA =
          (SERVER = DEDICATED)
          (SERVICE_NAME = orcl)
      )
    )
  </code></pre>
  
  <p>Also i can't do <code>sqlplus /@db as sysdba</code>. And after <code>sqlplus user@db as sysdba</code> i enter a password and have this error too. At the server this executes without errors. What is the problem?</p>
  
  <p>Oracle VirtualBox with Win2008, Oracle 12c</p>