Author: enrico-sorichetti
Subject: difference between ... DUMMY ... and ... NULLFILE ...
Posted: Mon Oct 17, 2016 4:31 pm (GMT 5.5)
There is no difference
as told here
http://www.ibm.com/support/knowledgecenter/SSLTBW_2.2.0/com.ibm.zos.v2r2.ieab600/iea3b6_Data_set_name_for_dummy_data_set.htm
and demonstrated here
edited to change the location of the dsn=nullfile
_________________
cheers
enrico
When I tell somebody to RTFM or STFW I usually have the page open in another tab/window of my browser,
so that I am sure that the information requested can be reached with a very small effort![icon_cool.gif]()
Subject: difference between ... DUMMY ... and ... NULLFILE ...
Posted: Mon Oct 17, 2016 4:31 pm (GMT 5.5)
There is no difference
as told here
http://www.ibm.com/support/knowledgecenter/SSLTBW_2.2.0/com.ibm.zos.v2r2.ieab600/iea3b6_Data_set_name_for_dummy_data_set.htm
| Quote: |
| NULLFILE Specifies a dummy data set. NULLFILE has the same effect as coding the DD DUMMY parameter. NULLFILE must be coded as a single-word parameter. For instance, IBM does not support the use of NULLFILE to obtain a dummy data set for these (or other) formats: When followed by a member name As a qualifier in a qualified data set name As a temporary data set name. |
and demonstrated here
| Code: |
********************************* TOP OF DATA ********************************** J E S 2 J O B L O G -- S Y S T E M S Y S 1 -- N 12.34.51 JOB04443 ---- MONDAY, 17 OCT 2016 ---- 12.34.51 JOB04443 IRR010I USERID ENRICO IS ASSIGNED TO THIS JOB. 12.34.51 JOB04443 ICH70001I ENRICO LAST ACCESS AT 12:34:32 ON MONDAY, OCTOBER 12.34.51 JOB04443 $HASP373 ENRICO1 STARTED - INIT 1 - CLASS A - SYS SYS1 12.34.51 JOB04443 IEF403I ENRICO1 - STARTED - TIME=12.34.51 12.34.51 JOB04443 IEF404I ENRICO1 - ENDED - TIME=12.34.51 12.34.51 JOB04443 $HASP395 ENRICO1 ENDED ------ JES2 JOB STATISTICS ------ 17 OCT 2016 JOB EXECUTION DATE 14 CARDS READ 58 SYSOUT PRINT RECORDS 0 SYSOUT PUNCH RECORDS 3 SYSOUT SPOOL KBYTES 0.00 MINUTES EXECUTION TIME 1 //ENRICO1 JOB NOTIFY=ENRICO, // CLASS=A,MSGCLASS=X,MSGLEVEL=(1,1) //* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - //* 2 //G EXEC PGM=IEBGENER //* 3 //SYSIN DD DUMMY //* 4 //SYSPRINT DD SYSOUT=* 5 //SYSUT1 DD DISP=SHR,DSN=ENRICO.TEST.ZA 6 // DD DISP=SHR,DSN=ENRICO.TEST.ZB 7 // DD DISP=SHR,DSN=ENRICO.TEST.ZC //* 8 //SYSUT2 DD SYSOUT=* ICH70001I ENRICO LAST ACCESS AT 12:34:32 ON MONDAY, OCTOBER 17, 2016 IEF236I ALLOC. FOR ENRICO1 G IEF237I DMY ALLOCATED TO SYSIN IEF237I JES2 ALLOCATED TO SYSPRINT IEF237I 0AB3 ALLOCATED TO SYSUT1 IEF237I 0AB4 ALLOCATED TO IEF237I 0AB1 ALLOCATED TO IEF237I JES2 ALLOCATED TO SYSUT2 IEF142I ENRICO1 G - STEP WAS EXECUTED - COND CODE 0000 IEF285I ENRICO.ENRICO1.JOB04443.D0000101.? SYSOUT IEF285I ENRICO.TEST.ZA KEPT IEF285I VOL SER NOS= STOR03. IEF285I ENRICO.TEST.ZB KEPT IEF285I VOL SER NOS= STOR04. IEF285I ENRICO.TEST.ZC KEPT IEF285I VOL SER NOS= STOR01. IEF285I ENRICO.ENRICO1.JOB04443.D0000102.? SYSOUT IEF373I STEP/G /START 2016291.1234 IEF374I STEP/G /STOP 2016291.1234 CPU 0MIN 00.06SEC SRB 0MIN 00.01S IEF375I JOB/ENRICO1 /START 2016291.1234 IEF376I JOB/ENRICO1 /STOP 2016291.1234 CPU 0MIN 00.06SEC SRB 0MIN 00.01S DATA SET UTILITY - GENERATE IEB352I WARNING: ONE OR MORE OF THE OUTPUT DCB PARMS COPIED FROM INPUT PROCESSING ENDED AT EOD za zb zc ******************************** BOTTOM OF DATA ******************************** |
| Code: |
********************************* TOP OF DATA ********************************** J E S 2 J O B L O G -- S Y S T E M S Y S 1 -- N 12.35.31 JOB04444 ---- MONDAY, 17 OCT 2016 ---- 12.35.31 JOB04444 IRR010I USERID ENRICO IS ASSIGNED TO THIS JOB. 12.35.31 JOB04444 ICH70001I ENRICO LAST ACCESS AT 12:34:51 ON MONDAY, OCTOBER 12.35.31 JOB04444 $HASP373 ENRICO1 STARTED - INIT 1 - CLASS A - SYS SYS1 12.35.31 JOB04444 IEF403I ENRICO1 - STARTED - TIME=12.35.31 12.35.31 JOB04444 IEF404I ENRICO1 - ENDED - TIME=12.35.31 12.35.31 JOB04444 $HASP395 ENRICO1 ENDED ------ JES2 JOB STATISTICS ------ 17 OCT 2016 JOB EXECUTION DATE 15 CARDS READ 58 SYSOUT PRINT RECORDS 0 SYSOUT PUNCH RECORDS 3 SYSOUT SPOOL KBYTES 0.00 MINUTES EXECUTION TIME 1 //ENRICO1 JOB NOTIFY=ENRICO, // CLASS=A,MSGCLASS=X,MSGLEVEL=(1,1) //* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - //* 2 //G EXEC PGM=IEBGENER //* 3 //SYSIN DD DUMMY //* 4 //SYSPRINT DD SYSOUT=* 5 //SYSUT1 DD DISP=SHR,DSN=ENRICO.TEST.ZA 6 // DD DUMMY 7 // DD DISP=SHR,DSN=ENRICO.TEST.ZB 8 // DD DISP=SHR,DSN=ENRICO.TEST.ZC //* 9 //SYSUT2 DD SYSOUT=* ICH70001I ENRICO LAST ACCESS AT 12:34:51 ON MONDAY, OCTOBER 17, 2016 IEF236I ALLOC. FOR ENRICO1 G IEF237I DMY ALLOCATED TO SYSIN IEF237I JES2 ALLOCATED TO SYSPRINT IEF237I 0AB3 ALLOCATED TO SYSUT1 IEF237I DMY ALLOCATED TO IEF237I 0AB4 ALLOCATED TO IEF237I 0AB1 ALLOCATED TO IEF237I JES2 ALLOCATED TO SYSUT2 IEF142I ENRICO1 G - STEP WAS EXECUTED - COND CODE 0000 IEF285I ENRICO.ENRICO1.JOB04444.D0000101.? SYSOUT IEF285I ENRICO.TEST.ZA KEPT IEF285I VOL SER NOS= STOR03. IEF285I ENRICO.TEST.ZB KEPT IEF285I VOL SER NOS= STOR04. IEF285I ENRICO.TEST.ZC KEPT IEF285I VOL SER NOS= STOR01. IEF285I ENRICO.ENRICO1.JOB04444.D0000102.? SYSOUT IEF373I STEP/G /START 2016291.1235 IEF374I STEP/G /STOP 2016291.1235 CPU 0MIN 00.04SEC SRB 0MIN 00.00S IEF375I JOB/ENRICO1 /START 2016291.1235 IEF376I JOB/ENRICO1 /STOP 2016291.1235 CPU 0MIN 00.04SEC SRB 0MIN 00.00S DATA SET UTILITY - GENERATE IEB352I WARNING: ONE OR MORE OF THE OUTPUT DCB PARMS COPIED FROM INPUT PROCESSING ENDED AT EOD za ******************************** BOTTOM OF DATA ******************************** |
| Code: |
********************************* TOP OF DATA ********************************** J E S 2 J O B L O G -- S Y S T E M S Y S 1 -- N 12.58.01 JOB04446 ---- MONDAY, 17 OCT 2016 ---- 12.58.01 JOB04446 IRR010I USERID ENRICO IS ASSIGNED TO THIS JOB. 12.58.01 JOB04446 ICH70001I ENRICO LAST ACCESS AT 12:36:15 ON MONDAY, OCTOBER 12.58.01 JOB04446 $HASP373 ENRICO1 STARTED - INIT 1 - CLASS A - SYS SYS1 12.58.01 JOB04446 IEF403I ENRICO1 - STARTED - TIME=12.58.01 12.58.01 JOB04446 IEF404I ENRICO1 - ENDED - TIME=12.58.01 12.58.02 JOB04446 $HASP395 ENRICO1 ENDED ------ JES2 JOB STATISTICS ------ 17 OCT 2016 JOB EXECUTION DATE 15 CARDS READ 59 SYSOUT PRINT RECORDS 0 SYSOUT PUNCH RECORDS 3 SYSOUT SPOOL KBYTES 0.00 MINUTES EXECUTION TIME 1 //ENRICO1 JOB NOTIFY=ENRICO, // CLASS=A,MSGCLASS=X,MSGLEVEL=(1,1) //* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - //* 2 //G EXEC PGM=IEBGENER //* 3 //SYSIN DD DUMMY //* 4 //SYSPRINT DD SYSOUT=* 5 //SYSUT1 DD DISP=SHR,DSN=ENRICO.TEST.ZA 6 // DD DISP=SHR,DSN=ENRICO.TEST.ZB 7 // DD DSN=NULLFILE 8 // DD DISP=SHR,DSN=ENRICO.TEST.ZC //* 9 //SYSUT2 DD SYSOUT=* ICH70001I ENRICO LAST ACCESS AT 12:36:15 ON MONDAY, OCTOBER 17, 2016 IEF236I ALLOC. FOR ENRICO1 G IEF237I DMY ALLOCATED TO SYSIN IEF237I JES2 ALLOCATED TO SYSPRINT IEF237I 0AB3 ALLOCATED TO SYSUT1 IEF237I 0AB4 ALLOCATED TO IEF237I DMY ALLOCATED TO IEF237I 0AB1 ALLOCATED TO IEF237I JES2 ALLOCATED TO SYSUT2 IEF142I ENRICO1 G - STEP WAS EXECUTED - COND CODE 0000 IEF285I ENRICO.ENRICO1.JOB04446.D0000101.? SYSOUT IEF285I ENRICO.TEST.ZA KEPT IEF285I VOL SER NOS= STOR03. IEF285I ENRICO.TEST.ZB KEPT IEF285I VOL SER NOS= STOR04. IEF285I ENRICO.TEST.ZC KEPT IEF285I VOL SER NOS= STOR01. IEF285I ENRICO.ENRICO1.JOB04446.D0000102.? SYSOUT IEF373I STEP/G /START 2016291.1258 IEF374I STEP/G /STOP 2016291.1258 CPU 0MIN 00.05SEC SRB 0MIN 00.01S IEF375I JOB/ENRICO1 /START 2016291.1258 IEF376I JOB/ENRICO1 /STOP 2016291.1258 CPU 0MIN 00.05SEC SRB 0MIN 00.01S DATA SET UTILITY - GENERATE IEB352I WARNING: ONE OR MORE OF THE OUTPUT DCB PARMS COPIED FROM INPUT PROCESSING ENDED AT EOD za zb ******************************** BOTTOM OF DATA ******************************** |
edited to change the location of the dsn=nullfile
_________________
cheers
enrico
When I tell somebody to RTFM or STFW I usually have the page open in another tab/window of my browser,
so that I am sure that the information requested can be reached with a very small effort
