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 do you filter out the rows retrieved from a Db2 table ?

1 9362

What is a clustered index?

1 12534

When will you chose to run RUNSTATS?

1 9487

What does DML stand for and what are some examples of it?

IBM,

3 9851

What is meant by a unit of recovery?

1 6628

What is CHECK PENDING ?

5 20157

What is a thread?

3 8297

What is filter factor?

2 10805

What's the maximum number of volumes that can be added to a STOGROUP?

IBM,

1 9405

What are PACKAGES ?

3 9143

Which catalog tables contain authorization information?

1 6236

Is DECLARE TABLE in DCLGEN necessary? Why it used?

3 9818

How does one remove entries from the SCT02 table?

1 4683

what is the difference between join and union?

IBM,

4 19015

I use CS and update a page. Will the lock be released after I am done with that page?

2 9970

Un-Answered Questions { IBM MainFrame }

How do define dynamic array in cobol. how do you define single dimensional array and multidimensional array in your cobol?

1315

Can QSAM files be accessed from CICS?

1193

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?

2340

How to remove the spaces at end of each record in the output file Via COBOL program? note: The file has a VB length ----TRY

1443

What are the building blocks used in vsam datasets?

1042

What is meant by MDT? Furthermore, comment on FRSET and FSET ?

1226

What is the function of entry sequenced data set?

1144

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 ?

2236

What are the types of processes to create a map in cics?

1107

what is the resolution for sb37 error

9281

How to run my rexx exec?

980

Explain about mirror activator disk mirroring?

1068

In COBOL programming, what is PERFORM? What is VARYING?

1217

WORKING-STORAGE SECTION. 01 GROSS-PAY. 05 BASIC-PAY PIC 9(5). 05 ALLOWENCES PIC 9(3). PROCEDURE DIVISION. MOVE 1000 TO BASIC-PAY. MOVE 250 TO ALLOWENCES. DISPLAY GROSS-PAY. STOP RUN. 77 W-A PIC 9(3)V99 VALUE 23.75 77 W-B PIC ZZ9V99 VLAUE 123.45 after the statement MOVE W-A TO W-B what will be W-B's value? a.123.75 b.b23.75 (where b indicates space) c.023.75 d.invalid move

1435

How to run cobol program using jcl?

1302

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