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

If by mistake we MOVE a working storage variable into LINKAGE area. What will happen??

Accenture,

4 20896

What is a PLAN table? How will you use it? Give the various fields of PLAN table?

Accenture,

1 4340

My SQL is not performing well. Describe how will you fine tune it?

Accenture,

1 6656

Can anybody tell what is tool used to generate the list of PROCS used in JCL to generate a PROCTREE

2454

write a program to read from a VSAM file , there will be a 5 records to create name. empno. resignation and address to update in a db2 table and call another program using dynamic call to find the matching fields in program 1 to update in db2 table. anybody pls send de program for dis ? thanks in advance...

CTS,

2737

How to resolve deadlock issue

IBM,

5 20113

How to identify in JCL that an input file is empty without reading it?

L&T,

4 12075

I want to open particular list of members inside pds.Let me know whether below code will work.if not tell me how it works INPUT='DDM.DATASET(AAA*)' X = OUTTRAP(MEMS.)

Mind Tree,

3208

I have two files each contains 10 records. I would like to copy both files into one output file but in alternate sequence. for e.g. first record from file1 then record 2 from file2.....

RBS,

3 13573

Add a field to screen when what's the flow of impact?

Keane India Ltd,

2908

Explain page up and page down logic along with coding logic in cics?

Wipro,

3 16778

What is the exact difference between PRTY and DPRTY

iGate,

2 17662

how a data in physical and symbolic map gets treated? Since the physical map is much concerned about the screen alignment and the field positions, how the values entered in the field which has PICIN or PICOUT clause in Physical map gets treated? Does that mean datas recieved or sent to the physical map should be constant? How does the data in Symbolic map gets converted with 5suffix namely F,L,A,I and O. For example EMPNO is treated as EMPNOI, EMPNOO, EMPNOA, EMPNOL and EMPNOF. how does this happen in symbolic map. Please provide your inputs on the above and kindly correct me if I am wrong.

HP,

2700

How to send data from cobol program to jcl?

CSC,

2 9924

I have a Flat file in which certain records are present in a tabular format. I need to extract some of the records on some basis from it and copy them into a flat file...how it can be done ??

HCL,

2 9946

Un-Answered Questions { IBM MainFrame }

What is query_cache_limit?

970

What is the maximum No of rows per page?

1065

State the differences between vsam and non-vsam files?

1053

Explain how does idms communicate with cics?

900

How do I delete a table in db2?

1064

What are the cics transactions?

1028

How to override loadlib?

2036

What is a storage group (stogroup)?

1242

What is job control language?

1088

How are composite and multiple indexes different?

1006

what are the thress bms options?

1225

What are the types of important programs that are used in the cics?

1033

What are the different dataset organizations used in vsam?

994

How can the disposition of sysout datasets be set for an entire jobstream?

1336

how can you check if a file is empty using jcl?

1420

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