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 11647

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 11776

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

iNautix,

4 14483

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 7514

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 3850

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

1 5900

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

2 6604

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 7716

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 6379

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 22005

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

IBM,

6 12767

what is the use of ENTRY in IMS?

CGI,

3 13657

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

IBM,

4 12190

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

UST,

2404

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

Fidelity,

1 9518

Un-Answered Questions { IBM MainFrame }

how can you define a dataarea(DTAARA) IN RPG? Which spec you define it C-spec/D-spec?

1919

How long have you been working on mainframes?

1018

What is runstats utility in db2?

1081

Explain processing program table(ppt)?

1224

How can an in-stream dataset be terminated?

1402

Suppose you are processing an input file in a natural program and you want the program to fail if the file is empty. What command you use in natural to force it to fail?

1147

What is explain in db2?

1090

What rules are followed by the search verb.

1206

If JOBA is in MSGW due to data decimal error and DUMP is generated and I found that Decimal field formatted with some special char which is coming from Input file amd file has millions of records. How I can find out on which record the error is occur. Please share your experience.....

2229

What dd statement is used to supply the name of a dataset?

1462

what is pdes?

1169

Define the attribute byte?

1289

name the command that is used to dump the main storage areas related to a task?

1153

What are the full forms of spufi and dclgen and why are they used?

1153

What is innodb buffer pool?

1146

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