| class  | JDODetachedFieldAccessException | This class represents exceptions caused by access of an unloaded field while
  the instance is detached. | 
| class  | JDONullIdentityException | An instance of this class is thrown when attempting to create an object id
  when the object id constructor parameter is null. | 
| class  | JDOQueryInterruptedException | This class represents exceptions caused when a query is cancelled by a user calling
 Query.cancel(). | 
| class  | JDOReadOnlyException | This class represents exceptions caused by an attempt to update a datastore
 when the PMF was created as "read-only". | 
| class  | JDOUnsupportedOptionException | This class represents exceptions caused by the use of optional features
 not supported by the JDO implementation. | 
| class  | JDOUserCallbackException | This class represents exceptions caused by exceptions thrown
 during execution of callbacks or listeners. |