title: Connect to Oracle DB using sqlplus
body: <p>I am using below command in Unix environment to connect to Oracle database:</p>
  
  <pre><code>sqlplus test/test@'(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=hostname.com )(PORT=1521)))(CONNECT_DATA=(SID=mysid))'
  </code></pre>
  
  <p>But I am getting below error:</p>
  
  <pre><code>Use SQL*Plus to execute SQL, PL/SQL and SQL*Plus statements.
  
  Usage 1: sqlplus -H | -V
  
      -H             Displays the SQL*Plus version and the
                     usage help.
      -V             Displays the SQL*Plus version.
  
  Usage 2: sqlplus [ [&lt;option&gt;] [{logon | /nolog}] [&lt;start&gt;] ]
  
    &lt;option&gt; is: [-C &lt;version&gt;] [-L] [-M "&lt;options&gt;"] [-R &lt;level&gt;] [-S]
  </code></pre>
  
  <p>Please help me where I am doing mistake in using the command.</p>