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?

1074

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

1152

What is meant by an attribute byte?

1040

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

1074

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

1069

Explain the uses that are associated to tsq and tdq ?

1077

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 ?

1025

What does a deadlock mean in DB2?

1160

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

1165

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

1054

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

1072

Name the lockable units in DB2?

1124

What is the need of a secondary index in IMS?

1058

What is the place for VSAM KSDS?

1100

When are scope terminators compulsory?

1031

Un-Answered Questions { IBM MainFrame }

In job processing, what happens in conversion stage?

1189

Define the term function request shipping?

1020

What is downtime and what might be the reason?

1094

Explain database descriptor in brief?

1003

What is a hyperdescriptor?

932

Yes. Because the alternate key would first locate the primary key, which in turn locates the actual record. Needs twice the number of I/Os.

2413

What does a ROLLBACK do?

1520

What is fset?

1008

what are the differences between temporary storage queue (tsq) and transient data quene (tdq)?

1225

what happens in conversion stage in job processing?

1217

Is it possible to move an alphanumeric incentive to a numeric field?

993

What is cobol db2?

991

What is the main function of key-sequenced data set?

1021

what is use of space parameter in dd statement?

1268

Ap wkur,=p5 where wkur is a label?

1135

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