title: sqlplus stuck on delete query
body: <p>I'm experiencing a strange issue while using a an anonymous PL/SQL block launched by SQL*Plus. This block contains a delete statement and it works as expected if launched by the oracle sql developer interface. It gets stuck if I launch it from the cmd through sqlplus.
  I discovered the delete statement is the problem... I have the same situation with a simpler code like that:</p>
  
  <pre><code>set serveroutput on size 1000000
  begin
    DELETE FROM USER_LEAD;
    dbms_output.put_line('test');
  end;
  /
  exit;
  </code></pre>
  
  <p>If I remove the delete statement everything works and it's the same with my real anonymous block. I want to point out that I'm the only one using the db so I don't think the table is locked by another user/process.</p>
  
  <p>Has anyone experienced that problem?</p>