In this example, two members (A and B) are selected from two input partitioned data sets (DATASET5 and DATASET6) and copied to an existing output partitioned data set (DATASET1). Member B replaces an identically named member that already exists on the output data set. Figure 1 shows the input and output data sets before and after processing.

Figure 1. Selective Copy with Replace specified on the Member Level

  //COPY     JOB     ...
  //JOBSTEP  EXEC  PGM=IEBCOPY
  //SYSPRINT DD  SYSOUT=A
  //OUT1     DD  DSNAME=DATASET1,UNIT=disk,VOL=SER=111112,
  //             DISP=(OLD,KEEP)
  //IN6      DD  DSNAME=DATASET6,UNIT=disk,VOL=SER=111115,
  //             DISP=OLD
  //IN5      DD  DSNAME=DATASET5,UNIT=disk,VOL=SER=111116,
  //             DISP=(OLD,KEEP)
  //SYSUT3   DD  UNIT=SYSDA,SPACE=(TRK,(1))
  //SYSUT4   DD  UNIT=SYSDA,SPACE=(TRK,(1))
  //SYSIN    DD  *
  COPYOPER   COPY    OUTDD=OUT1
                     INDD=IN5,IN6
             SELECT  MEMBER=((B,,R),A)
  /*

The control statements are discussed below:

• OUT1 DD defines a partitioned data set (DATASET1), which contains three members (A, B and F).
• IN6 DD defines a partitioned data set (DATASET6), which contains three members (B, C and D).
• IN5 DD defines a partitioned data set (DATASET5), which contains two members (A and C).
• SYSUT3 and SYSUT4 DD define temporary spill data sets. One track is allocated for each on a disk volume.
• SYSIN DD defines the control data set, which follows in the input stream. The data set contains a COPY statement, an INDD statement, and a SELECT statement.
• COPY indicates the start of the copy operation. The use of a SELECT statement causes a selective copy. The OUTDD parameter specifies DATASET1 as the output data set.
• INDD specifies DATASET5 as the first input data set to be processed and DATASET6 as the second input data set to be processed. Processing occurs as follows:
  1. Selected members are searched for on DATASET5.
  2. Member A is found, but is not copied to DATASET1 because DATASET1 already has a member named "A", and the replace option is not specified for member A.
  3. Selected members not found on DATASET5 are searched for on DATASET6.
  4. Member B is found and copied to DATASET1, even though there is already a DATASET1 member "B" in DATASET1, because the replace option is specified for member B on the member level. The pointer in DATASET1's directory is changed to point to the new (copied) member B; thus, the space occupied by the old member B is unused.
• SELECT specifies the members to be selected from the input data sets (DATASET5 and DATASET6) to be copied to the output data set (DATASET1).