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

Can we update with histogram?

2 9952

difference between read(1) and read work file once ?

3 10419

differnce between read work file 1 and read work file once? why we are using work file once?

4 17999

how we can find occurence of MU and PE fileds in a file?

2 8642

how to move cursor to a particular field when position is not known?

3 10934

how many work file we can code in jcl?

2 9464

difference between escape(top or bottom) and escape immediate(top or bottom?

CTS,

3 22183

Is Constent can be define as a key field?

3 8024

Is it possible to create a logical file whose Physical file is not in same library?

6 14811

Is LDA can be access accross the Job?

9 15060

What is the purpose of the SDSNLOAD dataset in the STEPLIB while running DB2 programs?

2 14517

Explain fixed length record in cobol? with suitable example

IBM,

1 5751

What is the purpose of coding FETCH in a SQL SELECT query? Explain with an example in Detail?

4 8138

We are using the searching a table which is indexed, once the key is found, how can we get the occurance at which the key was found.

1 4605

I have a files containing both duplicate and non-duplicate records.The file is already sorted by a key.I want to determine those records that are duplicate and records that are non-duplicate.If duplicate the record is move to a duplicate file and if non-duplicate that will be move to valid file.thank you

1 5364

Un-Answered Questions { MainFrame }

I executed one job and I forget to save the final JCL. But took an XDC from SPOOL. Now I want to recover the JCL from XDC dataset. Is there any process to do this?. (Manually it takes a lot of time). Is there

3131

In Which Specs Arrays, Tables & Constants Are Defined?

1224

Mention a credible reason why select* is never given preference in an sql program that has been embedded.

1251

Can you define a gdg?

1055

Define the term mro (multi region operation)?

1179

how to run other job when one job is active?

1077

Name and explain the type of locks?

1023

What is the use of KSDS,LDS,ESDS,RRDS??what is VRRDS?? How are all these useful in realtime scenario??Plz helpme out...Its a recent question in IGATE..

8829

What does a deadlock mean in DB2?

1223

Define psb?

1177

define the purpose of the *cat function?

1752

What is perform what is varying?

1226

what are bind concepts in db2 cobol?

1143

What is the difference between lds and esds?

1108

Differentiate cobol and cobol-ii. (Most of our programs are written in cobolii, so, it is good to know, how, this is different from cobol)?

1177

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