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

i created one base gdg with lrecl = 100 , now i need to create versions with different lrecl =150,200 can it be possible to create like tht ?

Patni, Syntel,

1 9910

is there any restrictions for unions ?

Patni,

4 9239

can i code union in cobol-db2 pgm ?

Patni,

4 13235

Suppose a generation of GDG gets created in a particular step of a proc. How would you refer the current generation in a subsequent step? What would be the disposition of this generation now ?

Patni,

4 8770

Size of a column has been changed in DB2 table (Suppose it was of 5 characters and later changed to 4 characters) and forgot to change the DCLGEN in COBOL program, what will happen during the execution of code? If the program Abends then what will be the error? If it doesn't abend then hpw the error can be catched?

IBM,

5 10968

I have a table with 3 dimensions like this : 01 ws-table 04 ws-page occurs 3 08 ws-column occurs 2. 12 ws-record occurs 20 pic x(40). How to code with PERFORM varying with 3 dimension...I forgot..

EDS,

2 6421

I have a JCL with 100 steps. I want run the Alternate steps in the JCL ( Like 2 ,4,6,8 etc.. ). How can I acheive this scenario? If It is by Cond Parameter can you provide the Condition code for that?

Polaris, Tech Mahindra, UST, Wipro,

5 28812

wht do u mean by internal reader in jcl ? wht is the use of internal reader ?

Syntel,

1 8089

wht happens if cond=true ? pls give me with an example ?

Syntel,

2 6362

i have records from 1 t0 100 . i need to open records from 10 to 18 and change the values in tht ? how can i do tht ?

Syntel,

2 8169

I have Job A and Job B. I want to trigger Job B from Job A. Please advise.

Wipro,

2 12516

how can u understand ps and pds from their names ?

TCS,

1 5575

i want to avoid the positional parameter how to code it ?

TCS,

3 12169

restart logic ?

TCS,

2 7447

what is d/f b/w sysout & sysprint

TCS,

4 16565

Un-Answered Questions { IBM MainFrame }

How many bytes will a s9(8) comp field occupy ?

1121

What is the difference between version control and debugging tools?

1047

Why would you use find and get rather than to obtain?

1183

How can we find that module can be called – whether DYNAMICALLY or STATICALLY?

1229

explain about maximum displacement and how to cross this limit?

1143

how do you reference the printer file formats from cobol programs

1218

What is the utilization of copybook in cobol?

1186

How to resolve deadlock issue

20113

What are the disadvantages of a hierarchical database?

3280

how you can access an uncataloged dataset in a JCL?

1133

How do you get parameter from JCL to PL1?

2429

What is the structure and definition for the same?

1005

What is idms-restart ?

1479

how do you define an altindx ? How do you use altindxs in batch, cics programs?

1068

Define task work area?

1314

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