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 4244

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

2 10206

What is ACQUIRE/RELEASE in BIND?

Cognizant,

3 27070

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

1 4135

What are foreign keys?

1 4956

What is JOIN and different types of JOIN.

IBM,

2 12698

What does DSNDB07 database do?

2 12348

What is a DB2 access path?

1 7247

What is a recovery log?

1 4895

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

3 20535

How does DB2 store NULL physically?

2 11031

Explain the use of the WHERE clause?

1 4199

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

CSI, CTS,

1 9645

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

1 4513

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

3 8566

Un-Answered Questions { IBM MainFrame }

can anybody post me about file-aid and changemen tools pls and give me reference if any mainframe guys are there

2436

What is the primary aspect of CICS?

1192

mention the option (along with argument type) used in a cics command to retrieve the response code after execution of the command?

1239

Every map is categorized into multiple fields, and there are three common working storage fields present for each of these respective fields. Mention those?

1113

What does reorg do in db2?

1095

Explain the purpose of dd * statement in jcl?

1130

What is the physical storage length of timestamp data type?

1157

Which components manage deadlocks in db2?

1135

How can a stopped job be started again?

1248

How to find the maximum value in a column in the db2 database?

1139

What kind of error is trapped by on size error option?

1299

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 ?

1084

how do you bind the cobol with db2

2860

What is commarea (communications area)?

1072

Explain how DSECT parameter is used in BMS ?

1264

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