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 is auditing?

2 5157

Lot of updates have been done on a table due to which indexes have gone haywire. What do you do?

2 5245

When do you specify the isolation level? How?

1 5343

What do the initials DDL and DML stand for and what is their meaning?

2 5603

What is the error code -803 ?

3 11972

What can the SET option of the Repair Utility accomplish?

1 5670

What are the levels of isolation available with DB2V4

IBM,

2 4755

Where are plans stored?

2 7263

What is a clustering index?

2 5676

What is a Resource Control Table(RCT)? Describe its characteristics.

3 13697

How is the SUBSTR keyword used in sql?

1 9468

What is an inner join, and an outer join ?

CTA,

1 13059

Where is the access path logic created by the DB2 Optimizer stored?

1 8460

What is a root page?

1 4431

What happens to the PLAN if index used by it is dropped?

1 5842

Un-Answered Questions { IBM MainFrame }

What is psb?

1096

Define a page in idms?

885

How do you create a temporary dataset?

1250

Explain about cursor stability?

1113

What do we mean by 'Virtual storage' for a dataset and for a JOBSTEP ? What is the significance of the following statement for a programmer 'Virtual storage results in program addresses being independent of the addresses that actually exist in a computer' ?

2085

why should SYSIN DD * statement should not be included inside a PROCedure snippet??? please answer this.. i need to know.

2506

is delete operation supported in an esds? Is rewrite operation possible in esds?

1169

How many maximum base registers we can have in a program?

1076

accept ws-date from date will return the current date?

1081

How do you simulate the explain of an embedded sql statement in spufi/qmf?

1154

in a cobol select statement, can you tell what is the organization for a ksds?

1169

What is cobol db2?

1055

What are the pertinent COBOL

2634

What is the use of uni-rexx?

1001

Is it possible to alter a table – for example adding a column, when another user is accessing or updating some columns?

1150

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