DFHSM

Data Facility Hierarchical Storage Manager:

1)Program that automatically performs space management and availability management in a storage device hierarchy.
2) DFHSM makes sure space is available on DASD volumes so that we can extend our old data sets and allocate new ones.
3) DFHSM also makes sure that backup copies of our data sets are always available if our working copies get lost or corrupted.

SPACE MANAGEMENT

PRIMARY SPACE MANAGEMENT
SECONDARY SPACE MANAGEMENT

PRIMARY SPACE MANAGEMENT

Deletion of temporary data sets
Deletion of expired data sets
Release of unused, over allocated space
Migration to DFHSM-owned migration volumes

SECONDARY SPACE MANAGEMENT

Migration level cleanup, which includes deletion of expired migrated data sets and some migration control data set (MCDS) records
Migration level 1 (ML1) to migration level 2 (ML2) volumes.

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What is console?

1) Computer operators are responsible for monitoring

and managing the operations of MVS operating system.

2) Computer operators use consoles to

· Issue system commands

· Receive system messages

OperatorèConsoleèMVS

MVS sends messages via the console that

· Inform you of the status of jobs

· Request that you perform a required action, such as mounting tapes or Cartridges 

Operator çConsoleçMVS 

Consoles provide a communication link between you

and MVS, JES2/JES3, VTAM, other system components and

application programs.

So console is nothing but the interface between Operating system (MVS) and the User.

THE THOUGHTS WHEN I DRUNK

1)Every successful man there is a woman,but every unsuccessful man there is also a woman,normally many  unsuccessful  men are in the world.

2)why only some peoples are rich in this world?

3)why some times little kids effecting by cancer.

4)How to overcome a fear completely..?

5)How to become a world no.1 Billionaire?

6)why some people are handicapped by birth?

7)why i am drinking?

8)how to free my country from corruption?


9)why some people are always using others for their own needs?

10)I hate those people who is coming to me when i am happy and having money.


11)I want to change the world..

12)I am wasting my knowledge..

13)why i am still in this  position ?

14)when do i start my own company?


15)why i am not getting any new idea?

16)why my friends are not understanding me?

Submitting Job Tru ISPF

Cobol Execution

C0bol Interview Questions & Answers

COBOL Questions:

1. Program name: P1.
Load library: TRGF99.COBOL.LOADLIB
Input File: TRGF99.FILE1
Output File: TRGF99.OUTFILE

//JOB1 JOB 124
//STEP01 EXEC PGM=P1
//STEPLIB DD DSN=TRGF99.COBOL.LOADLIB1,DISP=SHR
//INFILE DD DSN=TRGF99.FILE1,DISP=SHR
//OUTFILE DD DSN=TRGF99.OUTFILE,DISP=MOD

In the above scenario, if we execute the above program which one of the following errors we get?
a) S806 b)SE37 c)S0C4 d)S0C7

2. If ‘MAINPGM’ is a COBOL program that calls another program ‘LINKPGM’ and passes a value say, ‘10’, that value will be accepted by another variable in link program. Where that variable is declared?
a) Working Storage Section of MAINPGM
b) Linkage Section of MAINPGM
c) Linkage Section of LINKPGM
d) Working Storage Section of LINKPGM
e) Both b & d

3. A file attribute mismatch was encountered. Which of the following status code is related to the above message?
a)35 b)39 c)46 d)90

4. Which of the following divisions are mandatory
i) IDENTIFICATION
ii) ENVIRONMENT
iii) DATA
iv) PROCEDURE

a) i only b) i & ii c) iv only d) i & iv e) iii & iv

5. 01 WS-ABC PIC X.
88 FOUND VALUE ‘Y’.
88 NOT-FOUND VALUE ‘N’.
What is the error in the above code?
a) PIC clause is missing in the FOUND declaration.
b) PIC clause is missing in the NOT-FOUND declaration.
c) 88 level variables are declared in Area-A.
d) 01 level variable is declared in Area-A.

6. Every file entry in the File Control should have a description in the File Section.
a) True b) False

7. IF A>B
IF A>C
DISPLAY ‘A’
NEXT SENTENCE
END-IF
DISPLAY ‘C’
END-IF.
DISPLAY ‘B’.

If A=10, B=5, C=7. What is the output?
a) A C B b) A B c) B d) C B

8. What is the statement that is used to stop the execution of the program?
a) GOBACK b) EXIT c) STOP RUN d) EXIT

9. MAIN-PARA
DISPLAY ‘IN MAIN-PARA’.
PERFORM PARA1 THRU PARA2.
STOP RUN.

PARA1.
DISPLAY ‘IN PARA1’.

PARA3.
DISPLAY ‘IN PARA3’.

PARA2.
DISPLAY ‘IN PARA2’.

Assume that the above code is in the PROCEDURE DIVISION of a COBOL program. If the above program is executed, what is the output?

a) IN MAIN-PARA b) IN MAIN-PARA c) IN MAIN-PARA
IN PARA1   IN PARA1   IN PARA1
IN PARA2   IN PARA3   IN PARA2
IN PARA2   IN PARA3

d) Compilation Error as Para-names are not declared in a proper order.



10. Can we move a variable containing Alphanumeric value to a variable containing Numeric value?

a) Yes b) No

11. How many bytes are required to store data internally for a variable defined as PIC 9(7)V99 USAGE COMP-3.

a) 4 b) 5 c) 6 d) 9

12. Find the number of bytes which will be stored in the variable EMP-RECORD
01 EMP-RECORD.
02 EMP-DATA1.
03 EMP-NAME PIC X(10).
03 EMP-SAL PIC 9(04).
02 EMP-DATA2 REDEFINES EMP-DATA1.
03 EMP-N1 PIC X(12).
03 EMP-N2 PIC 9(02).
02 EMP-DATA3.
03 DEPT1 PIC X(02).
03 DEPT2 PIC X(02).

a) 14 b) 16 c) 18 d) 32

13. A PIC 9(2)V9(3) VALUE 10.121
B PIC 9(2) VALUE 12
C PIC 9(2)V99 VALUE 11.23

What will be the value in C after the following statement is executed
ADD A, B GIVING C ROUNDED

a) 22.121 b) 22.12 c) 22.13 d) 11.23

JCL ABENDS

1)SOC 1 ==>Misspeld of DD statement/Suscript Error.
2)SOC 4 ==>Storage protection Error.When your pgm is trying to store the data in memory that is not allocated.
3)SOC 7==>If u r trying to move the Numeric data into the NON-Numeric Field.
4)S222 ==> Operater cancelld the job,It may be improperly accessing a magnetic tape.
5)S322===>Time Out error.Due to the end less loop in your program.STEP time exceeded.
6)S522===>Time out error. JOB time exceeded than the specified time.
7)S804===>It is due to the lack of virtual storage.Increase the region parameter.
8)S806===>is an error that usually means you are not able to load or link in another
module.
9)  SB37==>End of the volume,no furthur volumes are specified.
10)SD37==>Secondary space not specified,primery space filled.
11)SE37==>Both primary and secondary space filled.

SMF

System Management Facilities. Function within z/OS whichcollects data on all system activities for use in accounting, performancemonitoring, capacity planning, etc. SMF creates log entries (SMF records) ofthis data.

MVS CONSOLE COMMANDS

DISPLAY COMMANDS:

1)D A,L --TO DISPLAY ACTIVE  TASKS,TSO USERS & JOBS.

2)D R,L--TO DISPLAY OUTSTANDING REQUESTS

3)D C-----TO DISPLAY CONSOLE STATUS INFORMATION.

4)D T-----TO DISPLAY GMT TIME & DATE.

5)D TS,L---TO DISPLAY NO.OF TSO USERS LOGGED ON TO THE SYSTEM.

6)D GRS,C---TO CHECK CONTENTION

7)D U,TAPE,ONLINE---TO DISPLAY ONLINE TAPES.

8)D U,DASD,ONLINE,,NO.OF DEVICES TO DISPLAY==>TO DISPLAY ONLINE DASD VOLUMES.

9)D U,DASD,OFFLINE,,NO.OFF DEVICES TO DISPLAY==>TO DISPLAY OFFLINE DASD VOLUMES.

10)D U,DASD,,NO.OF DEVICES TO DISPLAY===>TO DISPLAY DASD VOLUMES INCLUDING OFFLINE.

11)D PFK ====>TO DISPLAY PF KEYS.

12)D U,ALLOC,,NO.OF DEVICES TO BE DISPLAY==>TO DISPLAY THE STATUS OF ALLOCATED RESOURCES

13)D XCF==>TO DISPLAY THE SYSPLEX

14)D SMF==>TO DISPLAY SMF STATUS

15)D M=CHP(CHPID)===>TO DISPLAY PARTICULAR CHIP.

16)CF CHP(CHPID),ONLINE==>TO CONFIGURE CHIP ONLINE.

17)CF CHP(CHPID),OFFLINE==>TO CONFIGURE CHIP OFFLINE.

18)D IPLINFO==>TO DISPLAY THE CURRENT IPL INFO.

19)D DUMP==>TO DISPLAY DUMP DATASETS.

20)D TCPIP,,NETSTAT,HOME==>TO KNOW IP OF THE SYSTEM.

CA-7 COMMANDS

1) LQ,JOB=JOBNAME
2)LIST
3)XQM,JOB=JOBNAME
4)LJOB,JOB=JOBNAME,LIST=ALL
5)LJOB,JOB=JOBNAME,LIST=NODD
6)LJOB,JOB=JOBNAME,LIST=TRIG
7)LJOB,JOB=JOBNAME,LIST=DEPJ
8)DEMANDH,JOB=JOBNAME
9)RUNH,JOB=JOBNAME
10)FSTRUC,JOB=JOBNAME,SCHID=NNN
11)FRJOB,JOB=JOBNAME
12)LPRRN,JOB=JOBNAME
13)LRLOG,JOB=JOBNAME,DATE=*
14)DEMAND,JOB=JOBNAME,SET=NTR
15)DEMAND,JOB=JOBNAME,SET=SKIP
16)LSCHD,JOB=JONAME,LIST=CALS
17)LPDS,DSN=DATASETNAME,MEM=MEMBERNAME
18)HOLD,JOB=JOBNUMBER
19)LJCL,JOB=JOBNAME
20)/DISPLY,ST=JCL
21)/DISPLAY,Q=ALL
22)START,Q=ALL
23)STOP,Q=ALL

IMP Links

http://www.mainframegurukul.com/srcsinc/JCL2.html

http://www.geekinterview.com/question_details/71599

http://itknowledgeexchange.techtarget.com/itanswers/ipl-details-2/#answer

Hi Wel come to All...

This Blog is for Mainframes.