OCI-22053: overflow error - C #

I'm developing a web application in MVC with C# . I made a method that makes a select in my bank oracle and with the value returned I fill in a DataTable . But it returns an error when I run " dataAdapter.Fill(resultado) " returning error:

  

OCI-22053: overflow error .

Does anyone know the reason for this error?

Follow method code:

public DataTable ResgataArquivos()
{
    var resultado = new DataTable();

    myConnection.ConectarBanco(modelLogin);

    var query = "SELECT * FROM ARQUIVO";

    var command = new OracleCommand(query, myConnection.connection);
    var dataAdapter = new OracleDataAdapter(command); 
    dataAdapter.Fill(resultado);

    myConnection.FecharConexaoBanco();

    return resultado;
}