title: ORA-00905: missing keyword after creating table
body: <p>I am working on sql developer (11g) , I'm trying to create this table, but it doesn't work, it says ORA-00905: missing keyword</p>
  
  <p>SQL Code</p>
  
  <pre><code>CREATE TABLE module(
      code_mod int NOT NULL,
      intitule varchar2(255) NOT NULL,
      charge_hor int NOT NULL,
      coef double NOT NULL,
      CONSTRAINT PK_module   PRIMARY KEY(code_mod) 
  );
  </code></pre>