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IBM MainFrame Interview Questions
Questions Answers Views Company eMail

What is the meaning of VSAM RETURN-CODE 28?

 3 20588

On which datasets You can have ALT INDEX?

 2 4964

How many Alternate Indexes you can have on a dataset?

AB Inc,

2 8938

Is it slower if you access a record through ALT INDEX as compared to Primary INDEX? Why?

 1 5036

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.

 1881

What is RECOVERY and SPEED parameters in DEFINE CLUSTER command?

 1 13339

Describe SHAREOPTIONS parameter (SHR) in Define Cluster command.?

 1 16895

What does the KEYRANGES parameter in Define Cluster commend do?

 1 6685

What are the optional parameters to the input dataset While loading the empty cluster with the data records?

IBM,

1 5065

What is IDCAMS? and what is the purpose of it?

 4 17446

How to delete a member using JCL.?

 5 13553

What is the Difference between LDS & ESDS ?

 3 13905

Is a delete operation possible in an ESDS?B. Is rewrite operation possible in ESDS ?

 3 8715

What is an alternate index and path ?

Infosys, TCS,

2 25419

How many buffers are allotted to VSAM KSDS and ESDS?

 1 7419

Un-Answered Questions { IBM MainFrame }

What is the difference between drop table and delete table?

558

How to establish dynamic cursor position on a map?

587

Explain the mdt in cics?

621

What is one line to pass PARM from JCL to COBOL?

928

In the house keeping section of an MVS assembly language program, like the one below STM R14,R12,12(R13) BASR R12,R0 USING *,R12,R11 LA R11,2048 LA R11,2048(R11,R12) .... .... 1. What if BASR R12,R0 IS NOT PRECEDE USING *,R12,R11? 2. USING (base address), REGISTER does USING directive says assembler to treat particular Register as a base register with the mentioned base address..in the above case * i.e current location counter..well if that is the case why we need BASR R12,R0 ? 3. What if I write like STM R14,R12,12(R13) BASR R12,R0 LA R11,2048 LA R11,2048(R11,R12) USING *,R12,R11 there is no address resolution being calculated in both LA statements so is it a right way to set Base register?..will there be any issues with Domain regarding R11 and R12?

1531




is there an aix version of oorexx?

567

What is the maximum number of columns in a db2 table?

727

In COBOL programming, what is PERFORM? What is VARYING?

672

what is use of dsn parameter in dd statement?

675

Give some examples of command terminators?

761

What is bind plan?

616

explain in brief how you can create a vsam file?

662

What is package in db2 mainframe?

559

what is JCL?

698

Name a few CICS programs which are generally used ?

637

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