>>-UNABLE TO OBTAIN CKPT DATA SET LOCK – ----------------------->

>--+-I/O ERROR-------------+-----------------------------------><
   +-MEMBER=--memname------+   
   +-MEMBER=INITIALIZATION-+   
   '-VALIDATION ERROR------'   

JES2 initialization processing was not able to obtain control of the checkpoint data set.

• If I/O ERROR appears in the message text, an I/O error occurred on all defined checkpoint data sets while JES2 was attempting to obtain the checkpoint data set lock.
• If MEMBER=memname appears in the message text, another member in the MAS configuration has abnormally ended without releasing the checkpoint data set lock.

  The member that has not released the lock is identified by memname.

• If MEMBER=INITIALIZATION appears in the message text, a system failure occurred while the operating system was initializing a JES2 member in the configuration. The JES2 member that the operating system was initializing did not release the checkpoint data set lock.
• If VALIDATION ERROR appears in the message text, the lock record was not in the correct format. Verify that the data set is a valid JES2 checkpoint.