IDCAMS is the Access Method Services program. IDCAMS program is useful in creating
VSAM, GDG and PS file by supplying AMS commands thru SYSIN. The below examples are
very useful in coding the requirements for VSAM and GDG users.

Defining GDG

//GDG JOB ‘XXXXXX’,’YYY’,CLASS=A,MSGCLASS=X,NOTIFY=&SYSUID
//STEP1 EXEC PGM=IDCAMS
//SYSPRINT DD SYSOUT=*
//SYSIN DD *
DEFINE GDG –
( –
NAME(XXXXXX.YYY.GDG) –
LIMIT(10) –
NOEMPTY – <= NOEMPTY <-> EMPTY
SCRATCH – <= SCRATCH <-> NOSCRATCH
)
/*
//

Important SQL CODES and ABEND CODES

SORT JOIN – TO JOIN TWO FILES BASED ON A KEY

KNOW YOUR MAINFRAME

REXX – INITIAL SETUP

IDCAMS – Define VSAM ESDS

IDCAMS – Define VSAM RRDS

IDCAMS – Define VSAM KSDS

IDCAMS – Define Alternate Index (AIX)

IDCAMS – Define PATH for Alternate Index

IDCAMS – Define GDG

IDCAMS – Alter GDG, VSAM or PS File

IDCAMS – Delete GDG, VSAM or PS File

IDCAMS – Print VSAM File

IDCAMS

Recovery of Deleted Tape data set (Using Volume Serial)

JCL – SYSIN CONCATENATION

JCL – RUN ONLY ONE MIDDLE STEP (RESTART)

GDG – Delete Just Versions Not BASE

JCL – COPY DCB OF INPUT FILE TO OUTPUT FILE

HOW TO SUBMIT A JOB AUTOMATICALLY AFTER A JOB FINISHES

DELETE ALL GDG VERSIONS WITHOUT DELETING BASE

LISTCAT – BATCH JOB

IEBCOPY Examples

IEBGENER – INTERNAL READER TO SUBMIT

Delete Multiple datasets with same HLQ

JCL INTERVIEW QUESTIONS

JCL TIPS