title: Cannot find table v$parameter in Oracle
body: <p>I want to get the number of sessions in Oracle using the SQL query:</p>
  
  <pre><code>SELECT value FROM v$parameter WHERE name = 'sessions'
  </code></pre>
  
  <p>But I get this error:</p>
  
  <pre><code>Error starting at line 1 in command:
  SELECT value FROM v$parameter WHERE name = 'sessions'
  Error at Command Line:1 Column:18
  Error report:
  SQL Error: ORA-00942: table or view does not exist
  00942. 00000 -  "table or view does not exist"
  *Cause:    
  *Action:
  </code></pre>
  
  <p>Maybe the Oracle user that I use is not privileged? </p>