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 to read the 2nd last record of a VSAM file? (The file size is huge and we don't know the key)

HCL,

3261

In the house keeping section of an MVS assembly language program, like the one below STM R14,R12,12(R13) BASR R12,R0 USING *,R12,R11 LA R11,2048 LA R11,2048(R11,R12) .... .... 1. What if BASR R12,R0 IS NOT PRECEDE USING *,R12,R11? 2. USING (base address), REGISTER does USING directive says assembler to treat particular Register as a base register with the mentioned base address..in the above case * i.e current location counter..well if that is the case why we need BASR R12,R0 ? 3. What if I write like STM R14,R12,12(R13) BASR R12,R0 LA R11,2048 LA R11,2048(R11,R12) USING *,R12,R11 there is no address resolution being calculated in both LA statements so is it a right way to set Base register?..will there be any issues with Domain regarding R11 and R12?

1978

What does LA R3,R3 ?

Amdocs,

1 3220

What is SQL Code -904 and -903 in DB2 And how to handle it?

IBM,

1 7293

Why we should use cursor ?

3 4245

I know my query will return more than one row but I don't want cursor what should I do?

1 3433

How can you get the number of rows impacted by the last executed query?

1 2803

While unloading huge amount of data from table. Suddenly job failed some error. Imagine 1M data unloading, In that 90% data unloaded only 10% left, So if want to unload the rest 10% what needs to be done? Whether do i need to start from top or anything ?

JPMorgan Chase,

2324

How to fetch the uncommited data from table ?

JPMorgan Chase,

1 3651

Difference between Find and Read operation in ADABAS file.

Cognizant,

1 5490

I am having n number of records in a table which consists of emp-name is one of the field among them. Now i want to change the first letter of every name with capital.

Cap Gemini,

1 2523

assume ther are 5000 records in a database and want to fetch using cursor. cursor fetches only 3000 records and fetch is not happening for remaining 2000 records. why it happens and how to rectify it

TCS,

1 3192

in db2, already 10 columns arie der, and i want to insert 11th column. what parameters u wil consider for insertion and how will u insert

TCS,

1 3190

I have 60 steps in the JCL and want to Execute Only First from PROC by overriding in JCL ?

1836

How to override loadlib?

Fiserv,

2036

Un-Answered Questions { IBM MainFrame }

What are the parameter we cannot use in procedure? How many instream we can write in single jcl?

1072

Can you define bms?

1051

Explain how many work file we can code in jcl?

980

Explain the meaning of spufi?

1033

What is the use of predicate?

1040

what is the panel name of ispf primary option menu?

1147

What is image copy in db2?

1012

how do you reference the fixed unblock file formats from cobol programs

1234

What rules are to be followed while using the corresponding options?

1062

EXPLAIN MAIN FRAME TESTING PROCESS...HOW TO FIX THE MAINFRAME BUGS?

2540

Define an asra?

1031

Explain how can the disposition of sysout datasets be set for an entire jobstream?

1081

At what point are extension eliminators mandatory?

1001

Which command is used to remove all rows from a table?

1109

What is the latest version of ibm db2?

1268

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