SYSUT1 DD Statement

The SYSUT1 DD statement defines a DASD volume that IEHMOVE uses for its work areas. The SYSUT1 DD statement must be coded:

  //SYSUT1 DD UNIT=xxxx,VOL=SER=xxxxxx,DISP=OLD

The UNIT and VOLUME parameters define the device type and volume serial number. The DISP=OLD specification prevents the inadvertent deletion of a data set. The SYSUT1 DD statement cannot define an SMS-managed volume.

At least three utility work areas of 13, 13, and 26 contiguous tracks, respectively, must be available for work space on the volume defined by the SYSUT1 DD statement. (This figure is based on a 3380 being the work volume. If a direct access device other than a 3380 is used, an equivalent amount of space must be available.)

IEHMOVE automatically calculates and allocates the amount of space needed for the work areas. No SPACE parameter, therefore, should be coded in the SYSUT1 DD statement. However, you can increase the size of the work areas by coding the POWER value in the PARM parameter of the EXEC statement.

Prior space allocations can be made by specifying a dummy execution of the IEHPROGM utility program before the execution of IEHMOVE.

Note: IEHMOVE uses nonstandard data set names to allocate its work data sets. The names start with one or more asterisks. These work data sets are deleted at completion of the requested functions.

However, if IEHMOVE does not end normally (abend, system malfunction, and so forth), these work data sets remain on the DASD volume and cannot be deleted with any IBM utility. You can delete them by executing an IEFBR14 job and specifying their data set names in single quotes with DISP=(OLD,DELETE).