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MainFrame Interview Questions
Questions Answers Views Company eMail

what's the biggest disadvantage of using a VSAM dataset?

Anjana, CTS, DSRC, IBM,

8 18147

what's the device independent method to indicate where a Record is Stored?

 1 5099

How many times secondary space allocated?

 5 9568

what is the RRN for the first record in RRDS?

 2 11271

what is a Base Cluster?

HSBC, TCS,

3 9765

If FSPC(100 10 is specified does it mean that both the control interval and control area will be left empty because 100 % of both CI and ca are specified to be empty?

DSRC,

1 7685

What is a Generation Data Group (GDG)?

 2 9307

How is a GDG base created?

 5 24834

What is model dataset label(Model DSCB)?

 1 22896

How are GDGs concatenated?

 1 13717

How is a new GDG coded?

 2 9186

When should DISP=MOD is used?

TCS,

6 44767

How is a dataset passed from one step to another?

DELL,

2 14823

How are datasets concatenated?

CitiGroup,

3 12811

What is the difference between the JOBLIB and the STEPLIB statements?

 3 36480

Un-Answered Questions { MainFrame }

How is the record format of an output dataset specified?

846

how you will know whether you are in sfldrop or sflfold mode?

726

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

819

What is the diff bw PF/LF Name and their Record format name? what is restriction in record format then file name?

2602

how can we repair a soc-7 error?

644




What is database descriptor?

665

What are the different rules for performing sort operation?

849

How do you write from PL/1 code to JCL?

1911

What are the error (ONCODES) codes did you encounter in PL/1 programme?

2560

In job processing, what happens in conversion stage?

844

what is sflpag and sflsiz ?

2565

My sql statement select avg(salary) from emp yields inaccurate results. Why?

735

What is a trigger in the db2 database?

668

Why block size is multiple of lrecl in jcl?

1021

what are necessary keywords to code message subfile?

1165

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