MainFrame Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

IBM MainFrame (5234)
IBM AS400 (1355)
IBM PL/1 (31)

MainFrame Interview Questions

Questions Answers Views Company eMail

What is the maximum Key length of a KSDS dataset

2 4969

What is dummy parameter in JCL??

TCS,

3 7808

Can AnyOne tell me how to read join logical file in rpg from starting to end?

2 5066

suppose we have 10 members in physical file and i have to use 4 out of 10 so how can we read this in RPG

TCS,

3 6197

Suppose we have 10 records with same name and we are reading using READE,after 4 record i have to use CHAIN what is the output

3 5339

How can we change element of compile time array?Can we do so

TCS,

1 4285

Suppose in CL we reach at end of file and again we have to reach from 1 record

TCS,

3 6390

Difference between RESET and CLEAR

TCS,

1 9020

How can we call CL program to RPG? How many number of parameter we can pass

TCS,

2 5805

Suppose we have one database file and it is used by 5 programs and in 3 program we have to add some records in datbase file s what is the impact on other program?

1919

How can you delete a record from a file in RPG without using DELETE oppcode?

UST,

2 6520

Why there is invention of RPG if we can do insert update delete in CL through SQL.Why the rise of RPG?

Infogain,

1 4329

we are sending data of physical file to screen design and it is showing no record why?

NTT Data,

1 5452

Can anyone answer me when we will go for LF without key fields

HCL,

4 7753

suppose there are 100 records and i want to read records between 60-70 how we can read this 10 records in rpg

Polaris,

2 6646

Un-Answered Questions { MainFrame }

What is the use of member in pf?

990

What is bufferpool in db2?

1052

i am using non join multiple format my 3 database file is like that pf97 R REC ENAME ETENNO ESTATUS K ENAME pf98 R REC1 ENAME ESAL K ENAME PF99 R REC3 ENAME CRDCARD EID K EID & MY NON JOIN LOGICAL FILE IS ALSO SAME EXCEPT RECORD NAMES BEFORE I TRIED WITH 2 FILES SO ITS SAYS ERROR I.E.(Key field attributes must be same as for previous formats. ) SO I CHANGED KEYFIELD ACCORDING TO PF SO ITS WORKING BUT AFTER ADDING 3 FILES ITS SAYING SAME ERROR . I DONT KNOW I NEW IN AS400 PLLZ HELP ME I HAVE ONE MORE QUE. CANT BE USE DIFFERENT KEYFIELD (NOT ACCORDING TO PF) IN NON JOIN LOGICAL FILE.

1502

Explain the maximum number of pcbs allowed in a psb?

3616

define what a data queue is along with a brief example of what it may be used for?

1811

What is the eib?

1023

How does cobol compile db2 program?

1051

What is a system catalog table in db2?

1184

Define an associator in adabas?

959

is there any other way to install s/w in mainframe apart from smp/e system?

2628

Explain the difference between pseudo-conversational and conversational?

1091

I have a cobol db2 program(PGM A) where other program (PGM B) will call this program and passes some 50 fields data to PGM A. PGM A has some layout in which it receives the data from PGM B. And this layout has been copied in the linkage section pf PGM A. After getting the data, PGM A writes the data in a flat file in the same layout which it receives from PGM B. PGM B is a simple COBOL pgm. Please provide a JCL to run these programs.

2356

Explain the difference between a package and a plan. How does one bind 2 versions of a cics transaction with the same module name in two different cics regions that share the same db2 subsystem?

1032

Can we redefine the field of x(200) to less than 200?

1369

How do I add a column to an existing table in db2?

1030

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