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

What are the two outputs created as a result of generation of a map?

IBM,

2 8083

What is a Logical Unit of Work (LUW)?

1 15238

How does COBOL II and CICS release 1.7 provide for exceptional conditions and how does that differ from

IBM,

1 5617

I have written a CICS program. What tables should I setup to run this program?

IBM,

3 8337

List the sequence of steps used to achieve ?Modification in Skip Sequential Mode.?

1 6867

What do the terms locality of reference and working set mean?

1 5574

The EIB field which gives the last CICS command executed is

IBM,

2 9566

What is ENQ in CICS?

IBM,

2 20685

What are the six different types of argument values in COBOL that can be placed in various options of a CICS command?

1 6825

What is Journal Recovery and Dynamic Transaction Backout?

IBM,

2 6994

What is the CICS command that gives the length of TWA area?

IBM, TCS,

3 19040

What is the MASSINSERT option?

IBM, TCS,

1 7472

What will be the length of the eibcalen ,if the transaction is used to cics first time?

IBM,

3 7652

What is the difference between FSET and FRSET?

3 19403

What is the difference between a physical BMS mapset and a logical BMS mapset?

IBM,

3 10566

Un-Answered Questions { MainFrame }

Name all the file-open modes

1033

I need to compare 3 variables(dates) and do some processing based on the earliest date. There could be more then 1 date record in any of the 3 fields. What is the best way to code this?

2229

what is xfoot opcode ?

1722

In job processing, what happens in conversion stage?

1150

What is the function of rollback in idms?

867

Can the values of alphanumeric be moved to variable numeric?

1037

How to retrieve a physical file after deleting that?

1041

How do I add a column to an existing table in db2?

979

How jcl is used for testing batch programs?

1221

What is buffer pool and list some of them?

984

I have File 1 occurs 5 times with Employee-ID,Employee-Name,Employee-Dept (EEE and MECH). I have File 2 occurs 10 times with Employee-ID,Employee-Name,Employee-Dept (EEE,CIVIL,CHEMICAL and MECH). In FIle 1 and FIle 2 , for matching Employee-DEPT (Only MECH) , we need to move entire records from file1 to file 2. We should not use 2D array. Your help is needed here.

1510

What is ment by record level identifier?

1090

What does sqlcabc has?

999

How to handle exceptional conditions in cics?

1073

What is amode(24)?

1192

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