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 the use of lds (linear data set)?

1027

Explain the catalog?

990

Define dynamic processing?

1014

Explain the index set?

1090

Explain the purpose of the file status clause in the select statement?

993

Explain the significance of the shareoptions parameter?

1012

Explain what are the optional parameters to the input dataset while loading the empty cluster with the data records?

1154

What is the purpose of idcams?

1049

What does the keyranges parameter in define cluster command do?

1051

Define free space?

1057

Define a path?

1086

Define base cluster?

1011

What are the common vsam error conditions and codes?

1084

What is recovery parameters in define cluster command?

1057

Tell me how many alternate indexes you can have on a dataset?

1101

Un-Answered Questions { IBM MainFrame }

what operation is performed by job statement?

1128

What is hierarchical database?

3723

My Question is 1. How to cound no. of records in JCL. Please explain with an example. 2. How to execute only odd steps in JCL? I know EDIT TYPE = Inculde, Step Name = 1,3,5 and COND code for all even step. Anyone knows other than this.

2470

What is a run unit?

1389

What are various loop types supported by rexx?

948

how to handle -911 (deadlock) error in a db2 program so that the program will never abend?

1035

What is lock escalation in db2?

1033

What is inspect?

1013

How to create db2 table in mainframe?

1154

What is idms-restart ?

1485

B37 abend during spufi?

1455

how do you code a null statement?

1342

Differentiate between control interval (ci) and control area (ca)?

1008

Define an associator in adabas?

961

which is the cics control program that provides communication services between user written application programs and terminals?

998

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