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 11561

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

iNautix,

4 14234

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 7397

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 6442

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 7540

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 21839

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

IBM,

6 12464

what is the use of ENTRY in IMS?

CGI,

3 13446

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

IBM,

4 11965

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

UST,

2337

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

Fidelity,

1 9417

Un-Answered Questions { IBM MainFrame }

What is the difference between the mro & isc?

1035

What is the need of running runstats in the test environment?

1074

Mention some fields that are a part of sqlca.

1017

Explain how do you handle errors in cics programs?

983

what are the six different type of argument values in cobol that can be placed in various options of a cics command?

1277

how to convert the recors form vsam file to db2 table tru file aid

3257

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

1121

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

1079

What does the sample library of uni-rexx consist of?

1063

Explain the difference between external subroutine and subprogram?

1222

What is the role of data manager in the db2 database?

1104

Can you explain cics transaction gateway?

1077

what are the parameter we cannot use in procedure? How many instream we can write in single jcl? Can we call instream to catalog and catalog to instream?

1036

What is the physical storage length of the data types date, time, and timestamp?

1084

HOW to change the coloumns in XREF?

2001

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