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 we change the vsam file name in cics rigion? anybody elobrate this?

IBM,

3 11470

what is need of START 0?. In steed of '0' can we use any other numerics?. if we use what will happen?.

CSC, TCS,

4 11558

sample code for read a 2nd record from last in flatfile how can do?

iNautix,

4 14226

A cobol program to read a file , match it with other if. If match occurs then write it to an output file. If no match then no need to write it.Error log created by program to track any error.

1 7396

I have a jcl which is using 2 data sets i want to override those data sets. how can i override the files within the JCL. Give me the syntax. Make sure that it is not calling any Proc.

1 3741

Can we able insert data into a PS file Using IEBUPDTE utility??? If Yes can anyone describe it please..

1 5799

proc1,proc2,up to proc5 is there if i want to call proc1 and proc5how can u write the code

2 6441

Shall i use this query to retrieve first 4 records, Select empno, sal from emptbl where empno < 5. like this can we fetch first 100 records?

3 7535

Select empno, sal from emptbl where empno < 101.By this query can we fetch first 100 recs? where empno is primary key.It won't throw -811 error? if it wont,then what is use of cursor technique while fetching first 100 recs. Please need more clarification.

2 6246

what is lrec=f,what is difference between f,fb,v,vb?what is default value?how do we came to know that records are in f,fb,v,vb?

IBM, Wipro,

2 21836

I had 100 steps in jcl i want to execute first 10 steps only?

IBM,

6 12460

what is the use of ENTRY in IMS?

CGI,

3 13442

I had 100 records and i want to execute last three records by using cobol programming?what will be coding?

IBM,

4 11962

How do get the result of your program directly on your pc?

UST,

2335

What is diff between vsam and db2?what is advantage of db2 over vsam?which is best suited one?

Fidelity,

1 9416

Un-Answered Questions { IBM MainFrame }

What is host variable?

1053

What is the term “where” for?

1003

What are the error (ONCODES) codes did you encounter in PL/1 programme?

2913

Which isolation level provides maximum concurrency?

1150

what are transient data sets defined to cics?

1170

What is a dbrm in db2?

1020

How does jcl act on code(if you take a cobol program)?

1278

How to find schema of a table in db2?

1010

differentiate between sequential files and esds files in vsam?

1166

How to test SQL -911 error while developing COB-DB2 program

7558

before altering a table is it necessary to lock ? if lock what is it ? how to do ? ifi want to lock a table what is that command ?

2176

what is the difference between COBOL2 AND COBOL390?

3049

How to handle exceptional conditions in cics?

1130

Define base cluster?

1003

How do we specify index to include or not during bind process.

2126

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