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

What is the difference between a schema and a subschema in idms?

1 1256

When you are obtaining next within a set and get a end of set return code, on what record are you now current in idms?

810

What is a set in idms? What pointers are required, what are possible? How may sets be ordered?

864

If you are current on the owner of a set, what is the difference between an obtain next and obtain first in idms?

852

What does a rollback do in idms?

967

What is a region in idms?

895

What is the meaning of copy idms subschema-binds in idms?

872

What is the idd in idms?

1050

If the stored record is not defined as automatic of a set, how can it be stored as a member of the set?

810

What does a finish do in idms?

951

What is idms?

862

Is there a application program coding difference between local and central version mode in idms?

869

What is an area sweep and when is it used in idms?

1 1302

So manual and automatic are the connect options for a set. What are the disconnect options?

814

What is the difference between lds and esds?

1048

Un-Answered Questions { IBM MainFrame }

What is the structure and definition for the same?

1010

what is the purpose of coding class parameter in job statement?

1263

Can records be accessed randomly in esds?

984

What is database descriptor?

1023

Does Disconnect and Connect creates page lock in IDMS ?

1463

what do you mean by a upgrade set in vsam?

1077

What parameter directs the output of the job log dataset?

1282

how do you reference the variable unblock file formats from cobol programs

1328

What are the advantages of vsam over isam?

1135

What is the function of iebgener?

1055

what is the size of the address space in kbs for 16 bit address space?

1109

//S10 EXEC PGM=ICETOOL //TOOLMSG DD SYSOUT=* //DFSMSG DD SYSOUT=* //CON DD DSN=VAR.INPUT1,DISP=SHR // DD DSN=VAR.INPUT2,DISP=SHR //OUT DD DSN=VAR.OUTPUT,DISP=(NEW,CATLG,DELETE), // SPACE=(CYL,(5,5)),UNIT=SYSDA //TOOLIN DD * * Splice the needed data from the two VB files together SPLICE FROM(CON) TO(OUT) ON(5,5,CH) WITHALL - WITH(12,5) WITH(22,20) VLENMAX /*

1460

Explain about maximum displacement?

1060

What is an instance database?

1054

What are foreign keys in db2?

1108

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