Tasks
Tasks (for Beginners)
Summary
For extensive information, go through the Performing Tasks (for Experienced)
Creating a Backup Copy -
IEBGENER is used to create a backup copy of a sequential data set or PDS or PDSE member.
Example -
Requirement - Create flat (PS) file backup.
Input PS File - MATEPK.IEBGENER.INPUTPS
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
********************************* Top of Data **********************************
E0001 EMPLOYEE1 DIR LOC1 0000100000
E0002 EMPLOYEE2 MGR DEPT1 LOC1 0000080000
E0003 EMPLOYEE3 MGR DEPT2 LOC2 0000075000
E0004 EMPLOYEE4 TL DEPT1 LOC1 0000050000
E0005 EMPLOYEE5 SSE DEPT1 LOC1 0000045000
E0006 EMPLOYEE6 SE DEPT1 LOC1 0000034000
E0007 EMPLOYEE7 SSE DEPT2 LOC2 0000046000
******************************** Bottom of Data ********************************Code -
----+----1----+----2----+----3----+----4----+----5----+----6----+----7--
***************************** Top of Data ******************************
//MATEPKC JOB (123),'MTH',CLASS=A,MSGCLASS=A,MSGLEVEL=(1,1),
// NOTIFY=&SYSUID
//**********************************************************************
//* CREATE A BACKUP OF FLAT FILE
//**********************************************************************
//STEP10 EXEC PGM=IEBGENER
//SYSPRINT DD SYSOUT=*
//SYSUT1 DD DSN=MATEPK.IEBGENER.INPUTPS,DISP=SHR
//SYSUT2 DD DSN=MATEPK.IEBGENER.BACKUPPS,
// DISP=(NEW,CATLG,DELETE),
// SPACE=(TRK,(10,10),RLSE),
// UNIT=3390,VOL=SER=DEVHD4,
// DCB=(DSORG=PS,RECFM=FB,LRECL=80,BLKSIZE=800)
//SYSIN DD DUMMY
**************************** Bottom of Data ****************************Output - MATEPK.IEBGENER.BACKUPPS
VIEW MATEPK.IEBGENER.BACKUPPS Columns 00001 00072
Command ===> Scroll ===> CSR
=COLS> ----+----1----+----2----+----3----+----4----+----5----+----6----+----7--
****** ***************************** Top of Data ******************************
000100 E0001 EMPLOYEE1 DIR LOC1 0000100000
000200 E0002 EMPLOYEE2 MGR DEPT1 LOC1 0000080000
000300 E0003 EMPLOYEE3 MGR DEPT2 LOC2 0000075000
000400 E0004 EMPLOYEE4 TL DEPT1 LOC1 0000050000
000500 E0005 EMPLOYEE5 SSE DEPT1 LOC1 0000045000
000600 E0006 EMPLOYEE6 SE DEPT1 LOC1 0000034000
000700 E0007 EMPLOYEE7 SSE DEPT2 LOC2 0000046000
****** **************************** Bottom of Data ****************************Explaining Example -
- SYSUT1 DD maps the input data set (MATEPK.IEBGENER.INPUTPS).
- SYSUT2 DD defines the output flat file (MATEPK.IEBGENER.BACKUPPS).
- SYSIN DD defines the control data set as DUMMY to specify no control statements are using.
Creating a PDS or PDSE from Sequential File Input -
IEBGENER can logically divide a sequential file into record groups and assign member names to the record groups.
Example -
Requirement - Create PDS member from PS file.
Input PS File - MATEPK.IEBGENER.INPUTPS
Code -
----+----1----+----2----+----3----+----4----+----5----+----6----+----7--
***************************** Top of Data ******************************
//MATEPKC JOB (123),'MTH',CLASS=A,MSGCLASS=A,MSGLEVEL=(1,1),
// NOTIFY=&SYSUID
//**********************************************************************
//* COPY FALT FILE DATA INTO THE NEW MEMBER OF NEW PDS
//**********************************************************************
//STEP10 EXEC PGM=IEBGENER
//SYSPRINT DD SYSOUT=*
//SYSUT1 DD DSN=MATEPK.IEBGENER.INPUTPS,DISP=SHR
//SYSUT2 DD DSN=MATEPK.IEBGENER.NEWPDS(BACKUPPS),
// DISP=(NEW,CATLG,DELETE),
// SPACE=(TRK,(10,10),RLSE),
// UNIT=3390,VOL=SER=DEVHD4,DSNTYPE=LIBRARY,
// DCB=(DSORG=PO,RECFM=FB,LRECL=80,BLKSIZE=800)
//SYSIN DD DUMMY
**************************** Bottom of Data ****************************Output - MATEPK.IEBGENER.OUTPDS(BACKUPPS)
VIEW MATEPK.IEBGENER.NEWPDS(BACKUPPS) - 01.00 Columns 00001 00072
Command ===> Scroll ===> CSR
=COLS> ----+----1----+----2----+----3----+----4----+----5----+----6----+----7--
****** ***************************** Top of Data ******************************
000001 E0001 EMPLOYEE1 DIR LOC1 0000100000
000002 E0002 EMPLOYEE2 MGR DEPT1 LOC1 0000080000
000003 E0003 EMPLOYEE3 MGR DEPT2 LOC2 0000075000
000004 E0004 EMPLOYEE4 TL DEPT1 LOC1 0000050000
000005 E0005 EMPLOYEE5 SSE DEPT1 LOC1 0000045000
000006 E0006 EMPLOYEE6 SE DEPT1 LOC1 0000034000
000007 E0007 EMPLOYEE7 SSE DEPT2 LOC2 0000046000
****** **************************** Bottom of Data ****************************Explaining Example -
- SYSUT1 DD maps the input data set (MATEPK.IEBGENER.INPUTPS).
- SYSUT2 DD specifies the output file as PDS member MATEPK.IEBGENER.NEWPDS(BACKUPPS). MATEPK.IEBGENER.NEWPDS and BACKUPPS are the newly created in this job.
- SYSIN DD Specifies the control data set as DUMMY to identify no control statements are used.
Adding Members to a PDS or PDSE -
IEBGENER can creates the members from sequential file input and adds them to the data set.
Example -
Requirement - Create a new member in the existing PDS from PS file.
Input PS File - MATEPK.IEBGENER.INPUTPS
Code -
----+----1----+----2----+----3----+----4----+----5----+----6----+----7--
***************************** Top of Data ******************************
//MATEPKC JOB (123),'MTH',CLASS=A,MSGCLASS=A,MSGLEVEL=(1,1),
// NOTIFY=&SYSUID
//**********************************************************************
//* COPY FLAT FILE DATA INTO THE NEW MEMBER OF EXISTING PDS
//**********************************************************************
//STEP10 EXEC PGM=IEBGENER
//SYSPRINT DD SYSOUT=*
//SYSUT1 DD DSN=MATEPK.IEBGENER.INPUTPS,DISP=SHR
//SYSUT2 DD DSN=MATEPK.IEBGENER.OUTPDS(BACKUPPS),DISP=OLD
//SYSIN DD DUMMY
**************************** Bottom of Data ****************************Output - MATEPK.IEBGENER.OUTPDS(BACKUPPS)
VIEW MATEPK.IEBGENER.OUTPDS(BACKUPPS) - 01.00 Columns 00001 00072
Command ===> Scroll ===> CSR
=COLS> ----+----1----+----2----+----3----+----4----+----5----+----6----+----7--
****** ***************************** Top of Data ******************************
000001 E0001 EMPLOYEE1 DIR LOC1 0000100000
000002 E0002 EMPLOYEE2 MGR DEPT1 LOC1 0000080000
000003 E0003 EMPLOYEE3 MGR DEPT2 LOC2 0000075000
000004 E0004 EMPLOYEE4 TL DEPT1 LOC1 0000050000
000005 E0005 EMPLOYEE5 SSE DEPT1 LOC1 0000045000
000006 E0006 EMPLOYEE6 SE DEPT1 LOC1 0000034000
000007 E0007 EMPLOYEE7 SSE DEPT2 LOC2 0000046000
****** **************************** Bottom of Data ****************************Explaining Example -
- SYSUT1 DD maps the input data set (MATEPK.IEBGENER.INPUTPS).
- SYSUT2 DD specifies the output file as PDS member MATEPK.IEBGENER.OUTPDS(BACKUPPS). MATEPK.IEBGENER.OUTPDS is an existing PDS and BACKUPPS is the newly created member in this job.
- SYSIN DD Specifies the control data set as DUMMY to identify no control statements are used.
Changing Logical Record Length -
IEBGENER is used to produce a output data set that can contain either fixed-length or variable-length records with a logical record length different from the input logical record length.
Example -
Requirement - Create new PS with different length from input PS file.
Input PS File - MATEPK.IEBGENER.INPUTPS
Code -
----+----1----+----2----+----3----+----4----+----5----+----6----+----7--
***************************** Top of Data ******************************
//MATEPKP JOB (123),'MTH',CLASS=A,MSGCLASS=A,MSGLEVEL=(1,1),
// NOTIFY=&SYSUID
//**********************************************************************
//* COPY INPUT PS DATA TO NEW PS FILE BY CHANGING LENGTH
//**********************************************************************
//STEP10 EXEC PGM=IEBGENER
//SYSPRINT DD SYSOUT=*
//SYSUT1 DD DSN=MATEPK.IEBGENER.INPUTPS,DISP=SHR
//SYSUT2 DD DSN=MATEPK.IEBGENER.OUTPUT1,
// DISP=(NEW,CATLG,DELETE),
// SPACE=(TRK,(10,10),RLSE),
// UNIT=3390,VOL=SER=DEVHD4,
// DCB=(DSORG=PS,RECFM=FB,LRECL=70,BLKSIZE=700)
//SYSIN DD *
GENERATE MAXFLDS=1
RECORD FIELD=(70,1,,1)
/*
**************************** Bottom of Data ****************************Output - MATEPK.IEBGENER.OUTPUT1
VIEW MATEPK.IEBGENER.OUTPUT1 Columns 00001 00070
Command ===> Scroll ===> CSR
=COLS> ----+----1----+----2----+----3----+----4----+----5----+----6----+----7
****** ***************************** Top of Data ******************************
000001 E0001 EMPLOYEE1 DIR LOC1 0000100000
000002 E0002 EMPLOYEE2 MGR DEPT1 LOC1 0000080000
000003 E0003 EMPLOYEE3 MGR DEPT2 LOC2 0000075000
000004 E0004 EMPLOYEE4 TL DEPT1 LOC1 0000050000
000005 E0005 EMPLOYEE5 SSE DEPT1 LOC1 0000045000
000006 E0006 EMPLOYEE6 SE DEPT1 LOC1 0000034000
000007 E0007 EMPLOYEE7 SSE DEPT2 LOC2 0000046000
****** **************************** Bottom of Data ****************************Explaining Example -
- SYSUT1 DD maps the input data set (MATEPK.IEBGENER.INPUTPS).
- SYSUT2 DD specifies the output file MATEPK.IEBGENER.OUTPUT1 with record length 70.
- SYSIN DD specifies the control data set as DUMMY to identify no control statements are used.
Creating an Edited Data Set -
IEBGENER can specify editing information that applies to a record, a group of records, selected groups of records, or an entire data set.
Below are scenarios when the edited dataset is created -
- Rearranging or ignoring data fields within a record.
- Supplying literal information as replacement data.
- Converting data from one format to another.
Example -
Requirement - Create new PS with different 40 length and copy data(1-29 bytes and 60-70 bytes) from PDS member.
Input PS File - MATEPK.IEBGENER.NEWPDS(BACKUPPS)
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
********************************* Top of Data **********************************
E0001 EMPLOYEE1 DIR LOC1 0000100000
E0002 EMPLOYEE2 MGR DEPT1 LOC1 0000080000
E0003 EMPLOYEE3 MGR DEPT2 LOC2 0000075000
E0004 EMPLOYEE4 TL DEPT1 LOC1 0000050000
E0005 EMPLOYEE5 SSE DEPT1 LOC1 0000045000
E0006 EMPLOYEE6 SE DEPT1 LOC1 0000034000
E0007 EMPLOYEE7 SSE DEPT2 LOC2 0000046000
******************************** Bottom of Data ********************************Code -
***************************** Top of Data ******************************
//MATEPKC JOB (123),'MTH',CLASS=A,MSGCLASS=A,MSGLEVEL=(1,1),
// NOTIFY=&SYSUID
//**********************************************************************
//* COPY PDS MEMBER DATA TO PS WITH EMPNO, EMPNAME AND SALARY
//**********************************************************************
//STEP10 EXEC PGM=IEBGENER
//SYSPRINT DD SYSOUT=*
//SYSUT1 DD DSN=MATEPK.IEBGENER.NEWPDS(BACKUPPS),DISP=SHR
//SYSUT2 DD DSN=MATEPK.IEBGENER.OPDS2,
// DISP=(NEW,CATLG,DELETE),
// SPACE=(TRK,(10,10),RLSE),
// UNIT=3390,VOL=SER=DEVHD4,
// DCB=(DSORG=PS,RECFM=FB,LRECL=40,BLKSIZE=400)
//SYSIN DD *
GENERATE MAXFLDS=2,MAXGPS=1
RECORD FIELD=(29,1,,1),
FIELD=(10,60,,30)
RECORD IDENT=(5,'E0005',1)
/*
**************************** Bottom of Data ****************************Output - MATEPK.IEBGENER.OUTPUT1
VIEW MATEPK.IEBGENER.OPDS2 Columns 00001 00040
Command ===> Scroll ===> CSR
=COLS> ----+----1----+----2----+----3----+----4
****** ***************************** Top of Data ******************************
000001 E0001 EMPLOYEE1 0000100000
000002 E0002 EMPLOYEE2 0000080000
000003 E0003 EMPLOYEE3 0000075000
000004 E0004 EMPLOYEE4 0000050000
000005 E0005 EMPLOYEE5 0000045000
****** **************************** Bottom of Data ****************************Explaining Example -
- SYSUT1 DD maps the input data set (MATEPK.IEBGENER.INPUTPS).
- SYSUT2 DD specifies the output file MATEPK.IEBGENER.OUTPUT1 with record length 70.
- SYSIN DD specifies the control data set as DUMMY to identify no control statements are used.
- GENERATE MAXFLDS=2,MAXGPS=1 indicates a maximum of two fields and 1 INDENT uses in subsequent control statements.
- RECORD FIELD=(29,1,,1) specifies 1-29 bytes should place from the 1st byte in output file.
- FIELD=(10,60,,30) specifies 60-70 bytes should place from the 30th byte in output file.
- RECORD IDENT=(5,'E0005',1) specifies copy upto the record having 'E0005' in the 1-5 positions.