title: Problem with execute procedure in PL/SQL Developer
body: <p>I this is my first attempt to create procedure and execute it.
  First I create simple table. DB scheme of table is here:</p>
  
  <p>Table name: Ziaci</p>
  
  <p>Columns:</p>
  
  <ul>
  <li>ZiakId - primary key, number</li>
  <li>Surname, varchar2</li>
  <li>FirstName, varchar2</li>
  <li>TriedaId - forgein key, number</li>
  </ul>
  
  <p>Store procedure only insert data in table, I created store procudure with this SQL cmd:</p>
  
  <pre><code>create procedure ziaci_proc(surname_in in varchar2, 
  firstname_in in varchar2, triedaid_in in number)
  is
  begin
    insert into ziaci (surname, firstname,triedaid) values (surname_in,firstname_in,triedaid_in);
    end;
  </code></pre>
  
  <p>And I try call this procudure as:</p>
  
  <pre><code>execute ziaci_proc('X','Y',1)
  </code></pre>
  
  <p>I get this error:</p>
  
  <p>ORA-00900 invalid SQL statement</p>
  
  <p>An in PL/SQL Developer IDE is with red color underlined execute word.</p>
  
  <p>I test this procedure and it works good.</p>
  
  <p>I can only execute this procedure with this SQL command:</p>
  
  <pre><code>begin
  ziaci_proc('A','B',2);
  end;
  </code></pre>
  
  <p>What is bad, thank for help.</p>