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 are write I/Os from the buffer pool executed?

1 4140

What is the syntax of SELECT statement when embedded in a COBOL program?

2 10077

What is ACQUIRE/RELEASE in BIND?

Cognizant,

3 26820

Can All Users Have The Privilege To Use The SQL Statement Select (DML)?

1 4048

What are foreign keys?

1 4843

What is JOIN and different types of JOIN.

IBM,

2 12558

What does DSNDB07 database do?

2 12202

What is a DB2 access path?

1 7163

What is a recovery log?

1 4801

What is the COBOL picture clause of the following DB2 data types: DATE, TIME, TIMESTAMP?

3 20389

How does DB2 store NULL physically?

2 10933

Explain the use of the WHERE clause?

1 4093

How can you quickly find out the number of rows updated after an update statement?

CSI, CTS,

1 9533

How could one combine a set of incremental image copies into a single copy?

1 4406

When one binds a PACKAGE ( of a plan ) what package information is stored and where it is stored?

3 8425

Un-Answered Questions { IBM MainFrame }

what is the meaning of ssrange and nossrange?

996

What is difference between rollback and commit?

1154

what will happen if there is no secondary allocation made for datasets?

1109

What is the difference between plan and package in db2?

1106

Can records be accessed randomly in esds?

970

what is the role of the is numeric clause?

1090

how do you reference the variable block file formats from cobol programs

1246

Differentiate between addressing mode and run mode.

1073

Explain the advantage of dynamic generation of acb?

3196

what is buffering and how does it apply to vsam files ?

1170

define cond parameter in jcl?

1266

What is the difference between spufi and qmf?

1126

What do you understand by psb and acb?

1119

which utility is used a dummy utility?

1462

Is acct parameter mandatory?

1198

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