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

If we wish to create bms executable, what are the basic steps that the user has to go through?

1105

In a particular cics program, what is the procedure to allocate dynamic memory?

1168

What is meant by an attribute byte?

1054

Is length = 0 sufficient to ascertain that the field has been modified?

1085

Explain the primary significance of intra-partition and extra-partition tdqs ?

1090

Explain the uses that are associated to tsq and tdq ?

1093

Whenever a cics program goes through a compilation process, there is always some extra code that is added to the program. Where exactly does this new piece of code go to and what is it termed as ?

1042

What does a deadlock mean in DB2?

1174

What is the advantage in De-normalizing tables in DB2?

1189

What parameters are used to control the free space in DB2?

1062

How can record locking be achieved in those DB2 versions which do not support it?

1086

Name the lockable units in DB2?

1133

What is the need of a secondary index in IMS?

1070

What is the place for VSAM KSDS?

1109

When are scope terminators compulsory?

1045

Un-Answered Questions { IBM MainFrame }

explain in brief what are the 3 types of vsam files?

1113

Which commend used for terminating a browser operation?

1008

Explain the difference between pseudo-conversational and conversational?

1099

what will happen when you try to open an empty vsam file in a cobol program for input?

1057

What is eib?

1178

What is difference between alias and synonym in db2?

1150

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 ?

2187

What happens when you issue a escape routine in a program? Will there be any compilation /run time erro?

1020

Can I share my data with other jobs? How?

1119

What is the default value(s) for an initialize? What keyword will allow for an override of the default?

1130

File not opened because library is *PROD and debug is UPDPROD(*NO). ? what may be the reason? how to solve it..?

2956

What is db2 bind process?

1247

What is an mdt (modified data tag)?

1039

Explain in DD statement what is the use of DCB parameter?

1152

what is “Cond= even” and “Cond=only”?

1318

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