The following example illustrates a typical console sequence when an operator initiates the checkpoint reconfiguration dialog. The original checkpoint configuration as defined in the JES2 initialization data set is:

CKPTDEF CKPT1=(DSN=SYS1.JESCKPT1,VOL=CHECK1,INUSE=YES),
        CKPT2=(DSN=SYS1.JESCKPT2,VOL=CHECK2,INUSE=YES),
        NEWCKPT1=(DSN=SYS1.JES2REP1,VOL=CHECK3),
        NEWCKPT2=(DSN=SYS1.JES2REP2,VOL=CHECK4),
        MODE=DUAL

Assume that during a previous checkpoint reconfiguration, CKPT1 was forwarded to NEWCKPT1 on volume CHECK3. If you issue a $D CKPTDEF command, JES2 displays the following current checkpoint definition:

CKPTDEF CKPT1=(DSN=SYS1.JES2REP1,VOL=CHECK3,INUSE=YES),
        CKPT2=(DSN=SYS1.JESCKPT2,VOL=CHECK2,INUSE=YES),
        NEWCKPT1=(DSN=,VOL=),
        NEWCKPT2=(DSN=SYS1.JES2REP2,VOL=CHECK4),
        MODE=DUAL

To begin a checkpoint reconfiguration dialog and return CKPT1 to its original definition:

1. Enter

   $T CKPTDEF,NEWCKPT1=(DSN=SYS1.JES2CKPT1,VOL=CHECK1),RECONFIG=YES

2. $HASP285 JES2 CHECKPOINT RECONFIGURATION STARTING
3. $HASP233 REASON FOR JES2 CHECKPOINT RECONFIGURATION IS OPERATOR REQUEST
4. $HASP285 JES2 CHECKPOINT RECONFIGURATION STARTED - DRIVEN BY MEMBER SY4
5. $HASP271 CHECKPOINT RECONFIGURATION OPTIONS...VALID RESPONSES ARE...
6. $HASP272 ENTER RESPONSE
7. Operator response: R nn,1
8. $HASP273 JES2 CKPT1 DATA SET WILL BE ASSIGNED TO NEWCKPT1 ...
9. $HASP272 ENTER RESPONSE
10. Operator response: R nn,CONT
11. $HASP256 FUTURE AUTOMATIC FORWARDING OF CKPT1 IS SUSPENDED UNTIL NEWCKPT1 IS RESPECIFIED. ISSUE $T CKPTDEF,NEWCKPT1=(...) TO RESPECIFY

    In this example, $HASP256 is a highlighted message and remains on the screen until you issue $T CKPTDEF,NEWCKPT1=(...) in step 13.

12. $HASP255 JES2 CHECKPOINT RECONFIGURATION COMPLETE
13. Enter

    $T CKPTDEF,NEWCKPT1=(...)