ISTIC_FORCE_INCREMENT</code> are the following.  

 <p> If transaction T1 calls for a lock of type
 <code>LockModeType.PESSIMISTIC_READ</code> or
 <code>LockModeType.PESSIMISTIC_WRITE</code> on an object, the entity
 manager must ensure that neither of the following phenomena can
 occur: 
 <ul> 
 <li> P1 (Dirty read): Transaction T1 modifies a
 row. Another transaction T2 then reads that row and obtains the
 modified value, before T1 has committed or rolled back.

 <li> P2 (Non-repeatable read): Transaction