title: Changing a column type from varchar to CLOB with JPA
body: <p>I'm trying to change the data type of a column using the JPA annotation:</p>
  
  <pre><code>@Column(columnDefinition="CLOB")
  private String description;
  </code></pre>
  
  <p>Whenever this entity is persisted, a VARCHAR value is attempted to be stored, which is not long enough. I couldn't find any documentation on the @Column annotation specific to CLOB except one that defined a column = "CLOB NOT NULL". I want NULL values to be allowed. Is "CLOB" not the correct column definition here? </p>
  
  <p>I'm using EclipseLink to persist to a JavaDB database. </p>