title: ORA-02289:sequence does not exist
body: <p>I am using <code>FluentNHibernate</code>, I have a method that takes the JSON post makes a deserialize for the class type and saved it, and after is suppose to make a commit but I am getting the errors on save,</p>
  
  <pre><code>using (ITransaction transacao = _session.BeginTransaction(IsolationLevel.ReadCommitted))
  {
    _session.Save(cameras);
    transacao.Commit();
  }
  </code></pre>
  
  <p>the name of my class already equals the name on the bank, this is my mapping builder.</p>
  
  <pre><code>public MapCAMERAS()
  {
    Id(i =&gt; i.C_CAM);
    Map(c =&gt; c.C_BAL);
    Map(c =&gt; c.A_CAM);
    Map(c =&gt; c.D_CAM);
    Map(c =&gt; c.E_CAM);
    Map(c =&gt; c.N_CAM);
    Map(c =&gt; c.P_CAM);
    Map(c =&gt; c.S1_CAM);
    Map(c =&gt; c.S2_CAM);
    Map(c =&gt; c.T_CAM);
    Map(c =&gt; c.U_CAM);
    Map(c =&gt; c.DUMANUT);
  }
  </code></pre>
  
  <p>I check the names in table, all names are correct and I just have C_CAM as Id.
  For use this application is not necessary authentication.
  I have one Repository and I make my save method there, and service with method calling my Repository, on my post I'm using MVC.</p>
  
  <pre><code>var service = new ServiceCamera(new RepositoryCamera(session));
  var result = new RespostaPost();
  result = servico.Gravar(cameras);
  </code></pre>
  
  <p>Error: 
  <img src="https://i.stack.imgur.com/uGdx5.jpg" alt="enter image description here"></p>
  
  <p>My error is when I make the post method. How can I fix this error?</p>