IBM MainFrame Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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REXX (60)
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CLIST (6)
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MVS (25)
OS390 (10)
OS 2 (7)
VSAM (319)

IBM MainFrame Interview Questions

Questions Answers Views Company eMail

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

Anjana, CTS, DSRC, IBM,

8 20445

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

1 5769

How many times secondary space allocated?

5 10889

what is the RRN for the first record in RRDS?

2 12143

what is a Base Cluster?

HSBC, TCS,

3 10960

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 8394

What is a Generation Data Group (GDG)?

2 10463

How is a GDG base created?

5 26837

What is model dataset label(Model DSCB)?

1 23869

How are GDGs concatenated?

1 14824

How is a new GDG coded?

2 10202

When should DISP=MOD is used?

TCS,

6 47170

How is a dataset passed from one step to another?

DELL,

2 16371

How are datasets concatenated?

CitiGroup,

3 14245

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

3 38260

Un-Answered Questions { IBM MainFrame }

Can you define mapset?

1043

Which is not true about evaluate statement

2458

how to compare two datasets without using superce because output is limited to 133 bytes

2108

What are storage attributes of records?

914

Define cebr?

1108

which parameter is used to check the syntax of a jcl without executing it?

1363

What is dpf in db2?

1111

Give certain situations where NEWCOPY is obligatory?

1116

When reorg is used?

1129

Explain about rct in db2?

1109

What is the IDD?

1553

what are s0c1, s0c4, s0c5, s0c7 abends?

1309

how JCL works?

1268

B37 abend during spufi?

1455

what is the resolution for sb37 error

9127

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