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

Q1. How will you use two different DB2 qualifiers in a single COBOL program? Suppose we have 2 tables EMP1 and EMP2 with same structure defined in two different DB2 qualifiers QUAL1.EMP1 and QUAL2.EMP2 now during first 15 days we want to use QUAL1.EMP1 and rest of the days QUAL2.EMP2 how will we do this. We can create a single program and a single load for this program.

RBS,

2 7454

Q3. How will you fetch duplicate values from a DB2 table?

RBS,

2 14999

Q4. How will you get the count of record without using COUNT verb in query?

IBM,

2 12711

I have file with data as follows data 1 2 3 4 5 I need to read 1 and 5 ,then 2 and 4 then like.. upto end of file, can any one help on this

ISG,

3 8254

I need to insert a record in a file using STRSQL containing the some field values same as an already existing record in that file.I know to smple insert mentioning those values one by one.But is there any another query can be prepared for the same .Please share the query if known to you. Thanks in advance.

CSC,

2741

Is it possible to add an keyfield or field to an Physical file without changing its file identifier. Example : - Say I have an existing physical file which is being used in 5 programs. Now I want to add an additional Keyfield or an field to it and I don't want to recompile the programs.

2 5311

Can be OVRDBF command mentioned after OPNQRYF command in CL?

1 5308

What is the exact difference between Service Program and Binding Directory?

1 7414

What are the types of Signature validation?

1 4409

What is an Array Data Structure?

1 3928

How to read data from *LDA (Local Data Area) in RPGLE program without using IN opcode?

1 9465

can i sort packed decimal if i can tell the syntax

Barclays,

1 5646

What is Multi Occurrence Data Structure(MODS)?

CTS,

1 4633

In all our JOB Statement we have always COND=(4,LT) defined. Nevertheless when a Job failed the last step should then be executed (send a message to an user). Due to we don't like to change all our JOB's (ca. 2000), we are looking for a simply solution.

4 9837

What is IBM OS/2?

1 2680

Un-Answered Questions { MainFrame }

What is need of start 0? In steed of can we use anyother numerics? If we use what will happen?

1044

Explain the difference between using the read command with into option and set option?

1022

what is the use of jdftval in join logical file?

1800

How to find schema of a table in db2?

1014

when does a dataset go uncataloged?

1302

How do you overcome this limitation ?

1201

What does sqlcabc has?

1049

what is difference between cobol and cobol/400

22919

What are the different open modes available in cobol?

1189

Mention the types of job control statements?

1174

which cl command is used to trap error messages during program execution?

1466

When The Define Jcl Is Not Available, How Can You Get Information About A Vsam File's Organisation ?

1219

What is the main function of the sign-on table?

1075

What is the need to code commits in batch programs?

1142

What do you mean by monitor block?

1855

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