VSAM Interview Questions
Questions Answers Views Company eMail

What is the difference between CI( Control Interval)and CA (Control Area)?

TCS, Infosys,

3 8513

In vsam why we use export-import utility?

3 12183

What is the maximum no. of records that can be allowed in VSAM ?

2 5930

How do you convert flat files to VSAM files ?


5 18674

What is the maximum record length for the VSAM dataset?


7 14453

What is the procedure for running the batch job in mainframe?

1 4036

What do you mean by dirty read ?

5 9929

What do you mean by RDW in VSAM?

2 7498

While designing vsam files,what is the best way to choose control interval size for the data and the index?

1 4319

How vsam datasets are cataloged?

Ordain Solutions,

1 4220

What are the types of VSAM datasets?

3 5587

How are records stored in an ESDS, entry sequenced dataset?

1 3639

What is a CI, control interval?

3 3461

What are the distinctive features of a ksds, key sequenced dataset?

2 3831

What is a CA, control area?

1 2950

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Un-Answered Questions { VSAM }

Yes. Because the alternate key would first locate the primary key, which in turn locates the actual record. Needs twice the number of I/Os.


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..


what is the probability of a complete system distortion under high end low performing multiprocessor job?


In a KSDS file, key is missing for one record. How to insert the key for that particular record from back up file. Is there any sorting needed for the back up file before the key insertion?


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...


OPEN INPUT StudentFile READ StudentFile AT END SET EndOfStudentFile TO TRUE END-READ PERFORM UNTIL EndOfStudentFile DISPLAY StudentId SPACE StudentName SPACE CourseCode SPACE YOBirth READ StudentFile AT END SET EndOfStudentFile TO TRUE END-READ END-PERFORM CLOSE StudentFile STOP RUN what will be output