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

how to fetch the record before the last record in a cobol file( its a huge file and if the key field is not known)

IBM,

5 19293

what is the meaning of pic 9(09)v99-

HSBC,

4 23025

How to open VSAM file from 3.4? i have millions of records and i dont want to use the print ch ids(/) command bcz it takes to much time. so if you have any another command to open this plz tell me.

HSBC,

2 24546

How to change size of Initial number of records to *NOMAX for ALL PF files from perticular library, how can I do that

3286

is there any way to execute more than one proc in the same exec statement at the same time..?

2680

I have a job (4 steps) with time parameter coded in job & exec, say time=10 in job & time =3,2,2,4 in each steps. Will the job executes successfully?

Cognizant,

4 12482

How to find out the number of records in a file using JCL

CTS,

5 46899

Say I have a file with 12 records. Each record has the name of the month. I have to append data in these 12 records into 1 record. How is it possible?

CTS,

2 10277

When a COBOL-DB2 program in PRODUCTION is updating main tables and gone for long run, what have to do?

Broadridge,

3645

I have database, in that segment1 having dept code and segment 2 and so on multiple employees num. using dept & employee num we have to compare whether that employee belong to that dept or not, if that employee belongs to that dept then incentive is same same as in the table or else incentive must be zero? using IMS & cobol

IBM,

1 5866

in my project..TEST is db2 8.1 version In PROD it is 7.1 if i do REORG in TEST.. can I use the same REORG jcl with out modification in PROD region (this is DB2 8.1 )? if not, what modification i need to do in my REORG control card?

2169

can any one provide me the link for the db2 v7 & db2 v8 manual for Z/os? i need to know about the syntax of REORG in both versions & need to know the difference as well

2306

What does an outer join do?

CTS,

1 7909

What happens to a cursor after a commit?

3 10104

What do you do to keep the cursor from closing after a commit?

1 7017

Un-Answered Questions { IBM MainFrame }

What is an mdt (modified data tag)?

1105

My Question is 1. How to cound no. of records in JCL. Please explain with an example. 2. How to execute only odd steps in JCL? I know EDIT TYPE = Inculde, Step Name = 1,3,5 and COND code for all even step. Anyone knows other than this.

2532

Explain the function of dd disp parameter?

1184

Explain the difference between a symbolic map and physical map?

1086

what do you mean by recovery and speed parameters in define cluster command?

1189

Explain the function of the load command?

1204

Can QSAM files be accessed from CICS?

1193

Can you explain function of dbctl?

1186

How to access db2 tables in mainframe?

1108

Explain the difference between local and central version operating modes?

900

Is it possible to move the alphanumeric variables to a numeric variable?

1304

How to compare two files by using sort?

1077

What is the maximum number of levels allowed in ims db?

1046

hi.... anybody send real time project related questions & answers whatever will ask in interview plz.....help me? advanced thanks....

2547

What is a db2 package?

1138

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