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

What are the situations u have used in ur project for Subcript and Index ? 1.if u use Subscript why not Index,why u choose Subscript only? 2.if u use Index why not Subscript,what abt Displacement?

Cap Gemini,

2 9235

when GDG version number get changed ? bcz always Generations only increasing.

Cap Gemini,

1 7321

i want to learn mainframe..any websites and material to learn from basic..? my mail id : rajeswaribe2010@gmail.com

2219

Is it possible to delete Symbolic Map? What is the impactness if we delete symbolic map?

CTS,

3 11411

I have sequential file recl 1000 i want to add another 15 bytes to it. The record length should not change..How?

CTS, HCL,

1 5159

How to print data of sequential file to Spool..?

2 8107

Particular area has been affected in cics screen, what is the process to find?

Cap Gemini,

3 9881

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 ?

IBM,

2177

what is the total syntax for fetch ? can any one please give me all the details of fetch ? thx

IBM,

2 6387

can we view the access paths created by dbrm ? how ? thx

IBM,

2 7085

suppose in my table 10 rows are there , i want to update odd rows salary as 90000 ? how u do it ? any one help me ? what do we use here cursor-fetch or normal sql ?

IBM,

5 10821

i have a ps with two columns eno and ename , i need to copy eno column values in one ps and ename column values in one Ps ? is it possible through iebgener . how ? thx in advance

IBM, TCS,

1 6845

wht is packed decimal in cobol

2 7258

How do you round the addition or subtraction of two numbers in assembler? what does the following code do? AP WKUR,=P'5' where WKUR is a label

CSC, IBM,

3 10628

what is sort? whis is internal & external sort ?when do u go for inter sort & external sort? tell about some sort utilites?

BirlaSoft,

2 8688

Un-Answered Questions { IBM MainFrame }

Explain index cardinality?

1054

Explain the hierarchy levels in jcl?

1677

Which mode is used to operate the sequential file?

1200

What happens if both JOBLIB & STEPLIB is specified ?

1139

to use the rewrite command, how should the vsam file be opened?

1307

) How do u handle errors in BMS macro

2042

what is the difference between a return with transid and xctl? For example program. A is issuing return with transid to program b. Program a. Is isssuing xctl to program b?

1183

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

993

What is dbdgen process?

1166

What are the some important fields in the eib block?

1147

IF I mention stop run in CICS what happens?

2371

What is the term conversational programs means?

1010

How many types of page locks can be held in db2?

1038

How many register we are using in mvs?

1051

What are literals?

1127

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