MainFrame Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

IBM MainFrame (5234)
IBM AS400 (1355)
IBM PL/1 (31)

MainFrame Interview Questions

Questions Answers Views Company eMail

without logical file we cannot access the data in physical file.but we specify physical file in the program(ie:- Ffile IF E k disk).how can it be accessed?

HSBC, TCS,

3 9872

while i am using the dspmsg command on comman line in Mocha am getting error like Not authorized to message queue message my messagequeue Name? can anybody help me how to change my message queue Am anable to see my messages in message queue

1 3342

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

how to know total no of records in pf with out using sql??????

3 13072

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

1 5805

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

2 6450

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 7548

Errors in Sql query will be in which state?

1 5400

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 6252

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 21850

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

IBM,

6 12490

what is the use of ENTRY in IMS?

CGI,

3 13459

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

IBM,

4 11981

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

UST,

2345

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

Fidelity,

1 9427

Un-Answered Questions { MainFrame }

What is the need to code commits in batch programs?

1151

How to read and write a single record into a file. I would like to use it to enter a single 8-character piece of information and use it to put it into a variable for processing in JCL. Thank you

1076

Explain the difference between external subroutine and subprogram?

1225

How may sets be ordered?

892

What is the default value(s) for an initialize and what keyword allows for an override of the default?

1212

in my project..TEST is db2 8.1 version In PROD it is 7.1 if i do REORG in TEST.. can I use the same REORG jcl with out modification in PROD region (this is DB2 8.1 )? if not, what modification i need to do in my REORG control card?

2097

What are the main control blocks available in ims db?

1095

what is unit testing ? on which basis you will write test case ?

2015

Explain the difference between intra partition tdq and extra partition tdq?

995

How can an in-stream dataset be terminated?

1342

What are the different types of model available in coolplex

1467

what is the command to know key fields of file?

1176

What is inspect and what is it used for?

977

How to run cobol program using jcl?

1231

Explain the maximum number of fields allowed per segment and what is the maximum number of fields per database?

1061

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