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's a LDS (Linear Data Set) and what's it used for?

Cap Gemini, Steria,

1 18724

What is IDCAMS ?

2 8262

Can AMS commands be run from the TSO prompt ?

IBM,

1 6120

Syntax of AMS modal commands ?

IBM,

1 7290

Under IDCAMS , multiple functions can be executed, each of which returns a cond code. What will be the condition code returned to the operating system ?

IBM,

1 5653

What is Control Interval, Control Area?

1 5046

What is FREESPACE ?

2 6097

How do you decide on optimum values for CI, FREESPACE etc...?

1 4618

Would you specify FREESPACE for an ESDS?

1 7619

What is SHAREOPTS ?

2 8003

What is the meaning of each of the values in SHAREOPTS(2 ?

1 6106

How do you define a KSDS ?

IBM,

1 6491

How do you define an ALTINDX ? How do you use ALTINDXs in batch, CICS pgm?s ?

IBM,

2 7253

Using Alternate Indexes in Batch pgms: ?

IBM,

2 8218

Using Alternate Indexes in CICS pgms: ?

1 9283

Un-Answered Questions { IBM MainFrame }

What happens when you issue a escape routine in a program? Will there be any compilation /run time erro?

1003

Explain the function of the dd dcb keyword?

1252

What does the 'cebr:cics' transactions do?

1027

Why do we code s9 (4) comp. Inspite of knowing comp-3 will occupy less space?

1149

Explain the maximum number of levels allowed in ims db?

3781

how can i see junk values in dclgen or in hostvariable of comp ?

2993

What are the sub parameters for undo command?

1085

Explain the difference between a schema and a subschema in idms?

829

How to fetch the last row from the table in SQL (db2)?

1651

What is cursor in dbms?

1060

Why is free space left in ksds dataset?

1131

Write some characteristics of cobol as means of business language.

1142

Explain the function of dd disp parameter?

1116

What is copy pending and check pending in db2?

996

Can you define temporary storage?

1128

For More Un-Answered { IBM MainFrame } Questions Click Here