In this example, sequential input is converted into two partitioned members. The newly created members are merged into an existing partitioned data set. User labels on the input data set are passed to the user exit routine.

  //DISKTODK JOB  ...
  //STEP1    EXEC PGM=IEBGENER
  //SYSPRINT DD  SYSOUT=A
  //SYSUT1   DD  DSNAME=INSET,UNIT=disk,DISP=(OLD,KEEP),
  //             VOLUME=SER=111112,LABEL=(,SUL)
  //SYSUT2   DD  DSNAME=EXISTSET,UNIT=disk,DISP=(MOD,KEEP),
  //             VOLUME=SER=111113
       GENERATE  MAXNAME=3,MAXGPS=1
          EXITS  INHDR=ROUT1,INTLR=ROUT2
         MEMBER  NAME=(MEMX,ALIASX)
  GROUP1 RECORD  IDENT=(8,'FIRSTMEM',1)
         MEMBER  NAME=MEMY
 

The control statements are as follows:

• SYSUT1 DD defines the input data set (INSET). The input data set, which resides on a disk volume, has standard user labels.
• SYSUT2 DD defines the output partitioned data set (EXISTSET). The members created during this job step are merged into the partitioned data set.
• The SYSIN DD statement is omitted. Because the GENERATE line does not begin with //, the system assumes it is preceded by a //SYSIN DD * line. SYSIN DD defines the control data set, which follows in the input stream. The utility control statements are used to create members from sequential input data; the statements do not specify any editing.A /* at the end of any DD * data set is unnecessary because a JCL statement or end of the job stream marks the end of the input stream data set.
• GENERATE indicates that a maximum of three names and aliases are included in subsequent MEMBER statements and that one IDENT parameter appears in a subsequent RECORD statement.
• EXITS defines the user routines that are to process user labels.
• The first MEMBER statement assigns a member name (MEMX) and an alias (ALIASX) to the first member.
• The RECORD statement identifies the last record to be placed in the first member. The name of this record (FIRSTMEM) appears in the first eight positions of the input record.
• The second MEMBER statement assigns a member name (MEMY) to the second member. The remainder of the input data set is included in this member.