Using ISMF for Migrated Data Sets

You may choose to generate a data set list and obtain information about migrated data sets. When completing page 1 of the Data Set Selection Entry Panel, generate a list from the catalog (as opposed to the VTOC) and complete the ACQUIRE DATA IF DFSMShsm MIGRATED field. (See Completing Page 1 of the Data Set Selection Entry Panel for details.) This field lets you choose whether to retrieve information about data sets that DFSMShsm has migrated. Whether you select Y (yes) or N (no), the VOLUME SERIAL data column indicates MIGRAT.

When Data Is Not Acquired from the Migrated Version of the Data Set

If a data set is migrated and you specify an N, the processing time will be reduced. The devices ISMF generates for the DEVICE TYPE column are the device types (mostly tapes) after migration occurred. See Figure 1.

Figure 1. Data Set List When N Is Specified for the ACQUIRE DATA IF DFSMShsm MIGRATED Field

   Panel  List  Dataset  Utilities  Scroll  Help
 -------------------------------------------------------------------------------
                                 DATA SET LIST
 Command ===>                                                  SCROLL ===> HALF

                                                        Entries 1-9 of 9
 Enter Line Operators Below:                            Data Columns 16-19 of 41

     LINE                                    BLOCK    VOLUME  MULT  DEVICE
     OPERATOR          DATA SET NAME         UNUSED   SERIAL  VOL   TYPE
    ---(1)----  ------------(2)------------  -(16)--  -(17)-  (18)  -(19)--
                USER230.DASD1.DTYPE2         -------  MIGRAT  NO    3390
                USER230.DASD1.DTYPE3         -------  MIGRAT  NO    3390
                USER230.DASD1.DTYPE4         -------  MIGRAT  NO    3390
                USER230.DASD1.DTYPE6         -------  MIGRAT  NO    3390
                USER230.DATASET1.DTYPE1      -------  MIGRAT  NO    3590-1
                USER230.DATASET1.DTYPE3      -------  MIGRAT  NO    3590-1
                USER230.DATASET1.DTYPE4      -------  MIGRAT  NO    3590-1
                USER230.DATASET1.DTYPE5      -------  MIGRAT  NO    3480
                USER230.DATASET1.DTYPE6      -------  MIGRAT  NO    3590-1
    ----------  ------  -----------  BOTTOM  OF  DATA  -----------  ------  ----

When Data Is Acquired from the Migrated Version of the Data Set

If a data set is migrated and you specify a Y for the ACQUIRE DATA IF DFSMShsm MIGRATED field, the devices in the DEVICE TYPE column are DASD device types before migration occurred. See Figure 2.

Figure 2. Data Set List When Y Is Specified for the ACQUIRE DATA IF DFSMShsm MIGRATED Field

   Panel  List  Dataset  Utilities  Scroll  Help
 -------------------------------------------------------------------------------
                                 DATA SET LIST
 Command ===>                                                  SCROLL ===> HALF
                                                        Entries 1-9 of 9
 Enter Line Operators Below:                            Data Columns 16-19 of 39

     LINE                                    BLOCK    VOLUME  MULT  DEVICE
     OPERATOR          DATA SET NAME         UNUSED   SERIAL  VOL   TYPE
    ---(1)----  ------------(2)------------  -(16)--  -(17)-  (18)  -(19)--
                USER230.DASD1.DTYPE2         -------  MIGRAT  NO    3390
                USER230.DASD1.DTYPE3         -------  MIGRAT  NO    3390
                USER230.DASD1.DTYPE4         -------  MIGRAT  NO    3380
                USER230.DASD1.DTYPE6         -------  MIGRAT  NO    3380
                USER230.DATASET1.DTYPE1      -------  MIGRAT  NO    3380
                USER230.DATASET1.DTYPE3      -------  MIGRAT  NO    3380
                USER230.DATASET1.DTYPE4      -------  MIGRAT  NO    3380
                USER230.DATASET1.DTYPE5      -------  MIGRAT  NO    3380
                USER230.DATASET1.DTYPE6      -------  MIGRAT  NO    3380
    ----------  ------  -----------  BOTTOM  OF  DATA  --------  ---    ---  ----

In addition to the columns shown in Figure 2, ISMF also retrieves data for a number of other columns, including: ALLOCATED SPACE, DATA SET ORGANIZATION, RECORD FORMAT, BLOCK/CI SIZE, LAST REFERENCE DATE, and CHANGE INDICATOR. RECORD FORMAT is not completed for VSAM data sets.