Minimizing operator involvement
If you suppress operator verification and you have predefined a replacement checkpoint data set, JES2 automatically forwards the checkpoint data set that experienced the I/O error. To suppress operator verification, specify OPVERIFY=NO on the CKPTDEF initialization statement or on a $T CKPTDEF command. Automatic forwarding allows you to minimize disruption to your production systems. JES2 follows your predefined instructions and forwards the checkpoint data set as specified on the CKPTDEF statement. You are not prompted to change those instructions at reconfiguration time, thereby reducing the time required to complete checkpoint reconfiguration.
If you suppress operator verification (that is, if you specify
OPVERIFY=NO) and NEWCKPTn= has been specified, JES2 takes the following
default reconfiguration actions:
- Rather than issuing $HASP273, JES2 replaces the checkpoint data set with its replacement data set defined on the NEWCKPTn parameter of the CKPTDEF statement.
- Rather than issuing message $HASP278 (with the CREATE option),
when JES2 cannot locate the specified replacement checkpoint data
set, JES2 automatically creates one on the previously specified DASD
volume, or JES2 can connect to a new coupling facility structure,
but only if your coupling facility resource
management (CFRM) policy has defined the structure. Note: If however, OPVERIFY=YES and a CFRM policy does exist, you will be prompted to define a replacement checkpoint at this time.