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

How do you handle empty files in a JCL ?

Wipro, Xansa,

3 17745

I have a JCL which 20 steps. How do I execute 17 th step alone (It should execute only 17ths tep.and it should not execute 18,19,20 steps??

IBM, Infosys, TCS, Xansa, Xchanging,

9 65216

What is a GDG? Why do we go for a GDG ? utility used to create GDG?

Xansa,

3 12263

What is a MODEL Paramater in GDG ?

Xansa,

2 8883

GDG Create syntax ?

Xansa,

4 16582

Max generations in GDG??

Xansa,

15 24646

I have 5 generations in my GDG. How do I code in the JCL to consider all the 5 versions of the GDG ?

Xansa,

5 22706

What is SORT ? How do we eliminate duplicate records ? How do I select some records using SORT ?

GE, Xansa,

9 36951

what is XSUM in some fields= none, xsum ??

Xansa,

7 68890

what is reuse parameter ?

Polaris, Xansa,

3 28584

What is VERIFY command ? when do you use this command?? What actually it does ??

Xansa,

2 30402

Create syntax for a VSAM file ?

Xansa,

2 24044

How did you refresh a VSAM file and how frequently you do it ?

CSC, IBM, Patni, Xansa,

3 11588

How do you prepare a COBOL + DB2 program from coading till execution ?

Amdocs, Xansa,

1 10647

what are the frequent DB2 abends did you encounter in your programs ?? What are different SQL abends ??

Xansa,

4 14151

Un-Answered Questions { IBM MainFrame }

What does a cics translator do?

1438

Explain the maximum number of segment types allowed for a single database?

2270

How to find out the closest prime number of an input number? I believe it has something to do with SEARCH and COBOL Linear Array.

4172

If DB2 query returns in null value, how do you work with it in PL/1?

2364

What do you mean by hierarchical database?

1203

Name and explain the location modes?

892

WORKING-STORAGE SECTION. 77 W-A PIC 9(3)V99 VALUE 23.75. 77 W-B PIC ZZ9V99 VALUE 123.45. PROCEDURE DIVISION. MOVE W-A TO W-B. DISPLAY W-B. STOP RUN. compiler : IGYGR1080-S A "VALUE" clause literal was not compatible with the data category o subject data item. The "VALUE" clause was discarded. WORKING-STORAGE SECTION. 77 W-A PIC 9(3)V99 VALUE 23.75. 77 W-B PIC ZZ9V99. PROCEDURE DIVISION. MOVE 123.45 TO W-B. MOVE W-A TO W-B. DISPLAY W-B. STOP RUN. 2375

1477

What is null indicator in cobol db2?

1067

What is icm instruction?

1062

How to define a directory?

981

How to Build a Row Condition?

1726

Can dynamic calls be used in CICS?

1140

What is db2 bind?

1082

What is the function of dbctl?

1122

What are the different commands used in idcams for vsam?

1064

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