Example 6: Using standard image copies and Instant Snapshots

This example illustrates how to use both Instant Snapshot copies and standard image copies based on the size of the data.

Output data sets are defined for each type of copy. To do so, the example uses the following commands and options:

OUTPUT commands that define output data sets for each type of copy—Instant Snapshots and standard image copies
OUTSIZE option on the OPTIONS command to define the threshold at which Instant Snapshots will be made
BIGDDN option on the COPY command to identify the output file names for the consistent copies

The following figure shows an example of the JCL necessary to perform this task. For more information, see Standard-image-copies.

//NSCCOPY EXEC PGM=ACPMAIN,
//          PARM='&SSID,SZC233,MSGLEVEL(1)',REGION=0M
//      INCLUDE MEMBER=NSCSTEP
//      INCLUDE MEMBER=DB2LIBS
//STEPLIB   DD DISP=SHR,DSN=PRODUCT.LOAD.LIBS
//          DD DISP=SHR,DSN=DSNEXIT
//          DD DISP=SHR,DSN=DSNLOAD
//SYSPRINT DD DSN=RMD.NSC.&SSID..&CASE..SYSPRINT,
//            DISP=(NEW,CATLG),UNIT=SYSALLDA,
//            SPACE=(CYL,(1,1)),
//            DCB=(RECFM=FB,LRECL=133,BLKSIZE=13300)
//SYSOUT   DD SYSOUT=*
//ALPPRINT DD SYSOUT=*
//AFRSTMT DD SYSOUT=*
//AFRPRINT DD SYSOUT=*
//AFRSUMRY DD SYSOUT=*
//AFROSUM DD SYSOUT=*
//* SMALL DATASETS WILL USE STANDARD IMAGE COPIES
//* LARGE DATASETS WILL USE INSTANT SNAPSHOT COPIES
//SYSIN DD *
OPTIONS IXDSNUM DATASET
     XBMID XBMDB2

OUTSIZE 250K

OUTPUT COPY0001
    CATLG YES
    DSSNAP NO
    SPACE CYL

OUTPUT COPY0002
    CATLG YES
    DSSNAP YES
    SPACE CYL

COPY TABLESPACE NSCDB52.*
         DSNUM DATASET
         INDEXES YES
         COPYDDN(COPY0001)
         COPYDSN(DEC2CAT.&DB.&TS.&TYPE&PART.T&TIME)

         BIGDDN(COPY0002)
         BIGDSN(DEC2CAT.&DB.&TS.B&TYPE&PART.T&TIME)
    RESETMOD NO
    SHRLEVEL CHANGE CONSISTENT YES
/*

Example 6: Using standard image copies and Instant Snapshots

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