IBM MainFrame Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

COBOL (1072)
JCL (1031)
CICS (755)
DB2 (1122)

IMS (143)
IDMS (107)
Natural (81)
ADABAS (26)

REXX (60)
Assembler (68)
CLIST (6)
QMF (32)

MVS (25)
OS390 (10)
OS 2 (7)
VSAM (319)

IBM MainFrame Interview Questions

Questions Answers Views Company eMail

what's the biggest disadvantage of using a VSAM dataset?

Anjana, CTS, DSRC, IBM,

8 20474

what's the device independent method to indicate where a Record is Stored?

1 5776

How many times secondary space allocated?

5 10904

what is the RRN for the first record in RRDS?

2 12159

what is a Base Cluster?

HSBC, TCS,

3 10979

If FSPC(100 10 is specified does it mean that both the control interval and control area will be left empty because 100 % of both CI and ca are specified to be empty?

DSRC,

1 8401

What is a Generation Data Group (GDG)?

2 10476

How is a GDG base created?

5 26866

What is model dataset label(Model DSCB)?

1 23879

How are GDGs concatenated?

1 14837

How is a new GDG coded?

2 10220

When should DISP=MOD is used?

TCS,

6 47189

How is a dataset passed from one step to another?

DELL,

2 16390

How are datasets concatenated?

CitiGroup,

3 14258

What is the difference between the JOBLIB and the STEPLIB statements?

3 38283

Un-Answered Questions { IBM MainFrame }

explain how do you define a gdg in vsam?

1038

Why adabas is used?

949

Explain the difference between various read and find statement?

1077

What type of database is db2?

975

What is a SSRANGE and NOSSRANGE?

1479

What is speed parameters in define cluster command?

1048

What is jcl in mainframe, and how many types of jcl statements are there for a job?

1204

Explain the function of the terminal control table?

1022

What are the retrieval sequences in ims db?

1363

What does a COMMIT statement do?

1400

Explain the difference between getting the system time with eibtime and asktime command?

1101

Explain the system transid cemt?

1115

How you can characterize tables in cobol?

1209

What type of SDLC u followed? Why?

2004

How do I import data from excel to db2?

1079

For More Un-Answered { IBM MainFrame } Questions Click Here