59041706 computer associates 7 material

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Computer Associates Material 2011

1 Need for Scheduler

CA-7 is an online, real time, interactive system, which

automatically controls, schedules and initiates work according

to time driven and/or event driven basis. It is used to reduce

manual work load.

What is a JOB?

A task or unit of work directed to CPU in batch environment.

A set of JCL control statements with one JOB statement and oneor more steps that are executed on a computer.

Batch Processing

Execution of a set of interrelated JOBs based on either dates or

times or events or dependencies.

Batch processing removes the need for manual intervention.

Features of CA-7

CA-7 scheduler provides intelligent workload managementfor OS/390 environment.

Ensures throughput is maximized.

Ensures OS/390 resources are efficiently used.

CA-7 Pre-requisites

JOBS need to be defined to CA-7.

Scheduling criteria needs to be defined for each job.

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CA-7 Common Terminology

Scheduling

Each job can have unique scheduling criteria that can be basedon either Dates and time or triggering.

Requirements

Predecessors that must be defined before a job can run.

They are called Predecessors as they must precede the job

They can be completion of another job, manual task andcreation of dataset.

They can be defined in addition to its scheduling criteria.

Schedule ID

They are the numbers from 1 to 255, which are used toidentify scheduling variations.

It allows scheduling of the same job in different ways.

1.5.3.1 Type of jobs:

1. Demand

2. Auto3. Sscn (scheduled scan jobs)

4. Run

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Example for SCHEDULE ID

Schedule Scan

The schedule scan program scans the CA-7 database, selectsthe jobs that are scheduled for processing in the next fewhours, and bring them into the request queue.

QUEUE

The disk datasets that hold the records of CPU jobs duringdifferent phases of processing.

There are eight such disk datasets :

Request Queue Trailer Queue Ready queue Active Queue Hold Queue Prior-run Queue

Preprocessing queue Post processing queues

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CA-7 Execution of Jobs

The following steps explain the execution order of the jobssubmitted to CA-7:

1. The Job starts in REQUEST queue.

2. As the job is put in the request queue, at the same time, theJCL copy is written to the TRAILER Queue.

3. The job record is moved to READY Queue, only when all the

requirements are satisfied.

4. JCL is submitted to JES when the resources are available.

5. When the Job goes active on the system, the JOB record ismoved to the ACTIVE queue.

6. At JOB termination, CA-7 returns the job record to REQUESTQueue.

7. If the termination is unsuccessful, then the record is held foroperator intervention in the HOLD queue.

8. Here the JCL remains in the TRAILER Queue so that it can berestarted.

9. If job is successful, the record is moved to PRIOR-RUN queueand JCL is deleted from TRAILER Queue

10. Remaining two Queues hold the data for non-computertasks.

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Entire job flow:

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Late job analysis:

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Online Mode:

Step 1 : Enter CA7 at the command prompt.

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Menu Utilities Compilers Options Status Help------------------------------------------------------------------------------

ISPF Primary Option Menu for S4HSOption ===> =ca7

--- ISPF/PDF --- --- Local Options (Scrollable) --- ---- Status Area ----More: +

0 Settings $ $AVRS SYSOUT Accum and View User ID . : G2BR82T1 View A ACF2 Options Time. . . : 06:222 Edit APC Automated Production Control Terminal. : 32783 Utilities CA1 CA1 Screen. . : 24 Foreground CA11 CA11 Language. : ENGLISH5 Batch CA7 CA7 TSO Interface Appl ID . : ISR6 Command C7 CA7 ISPF Interface TSO logon : $SPFUSRA7 Dialog Test D Docu/Text TSO prefix: G2BR82T8 LM Facility DB2 DB2 Options Panel System ID : S4HS9 IBM Products DISP DISPATCH MVS acct. : RCFS-TSO10 SCLM E EDS (Restricted) Release . : ISPF 5.211 Workplace ETF EKC Test Facility for ACF2

Enter X to Terminate using log/list defaults


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Step 2 : Enter option 1 for database enquiry

Step 3 : Enter Job Name for which you wish to obtain Scheduler

information

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. . . . . . . . . . . . . . . . . . . . . . . . . .---------------------------- CA7 TSO INTERFACE -------------------------------ENTER OPTION ===> 1

WELCOME TO THE NEW CA7 DATA BASE INQUIRY SYSTEM

1 DATABASE INQUIRY

2 CA7 FORCAST

PRESS PF3 TO EXIT

. . . . . . . . . . . . . . . . . . . . . . . . . . .

COMMAND ===>

JOBNAME = JOB2 Must be 1-8 alphanumeric characters. GenericJob searches and application searches are notsupported.

Press ENTER when all input has beenkeyed or press PF3 to return to previousscreen.


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Step 4: Note the Job information is retrieved as shown below.We can enter appropriateoption number at the prompt to get the relevant data.

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ENTER OPTION ===>

JOB2

DEFAULT INFORMATION:

CA7 SYSTEM NAME IS TESTSYSEXECUTION SET FOR SYSTEM 4JOB2 EXECUTION SWITCH IS SET TO YESLAST MAINTENANCE ON 03.365 AT 10:39:37 VIA DBM BY OCONSIDER ABNORMAL END IF 0000 IS NE HIGHEST STEP COND-CODE

OPTIONAL INFORMATION:

1 VIEW WHAT TRIGGERS JOB2

2 VIEW WHAT JOB2 TRIGGERS3 VIEW JOB REQUIREMENTS4 VIEW DSN REQUIREMENTS5 VIEW SCHEDULE(S)6 VIEW CALENDARS7 VIEW JOB DEPENDENCY-SUCCESSOR8 PRINT


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Step 5 : Option 1 will provide trigger Information

Step 6 : Option 2 will provide triggered Job Information

Step 7 : Option 3 is for Job requirements


COMMAND: SCROLL: CSR

THE FOLLOWING JOBS TRIGGER JOB2

LEAD SUBMITJOBNAME SCHID QTM TIME TIME

*************************** Top of Data *********************************----------------- TRIGGERED BY JOBS/DATASETS/NETWORKS ------------------

JOB=JOB1 SCHID=001 QTM=0010 LEADTM=0010 SUBMTM=0000

*************************** Bottom of Data *******************************

COMMAND: SCROLL: CSR

THE FOLLOWING JOBS ARE TRIGGERED BY JOB2

LEAD SUBMITJOBNAME SCHID QTM TIME TIME

*************************** Top of Data******************************--------------------------- TRIGGERED JOBS ---------------------------

JOB=JOB3 SCHID=001 QTM=0010 LEADTM=0010 SUBMTM=0000

****************************Bottom of Data***************************

COMMAND : SCROLL : CSR

JOB REQUIREMENTS FOR JOB2**************************** Top of Data ****************************

JOB=JOBA SCHID=001 VRSN=94279/1300 LEADTM=10**************************** Bottom of Data **************************


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Step 10 : Option 6 is for determining the BASE CALENDAR.

COMMAND: 6SCROLL : CSR

************************************* Top of data************************

**********************************************************

**** CA-7 SCHEDULE CALENDAR FOR

JOB=JOB2** DATE 01333** BASE CALENDAR SCAL01CD (DEFAULT)

SCH*************************************************

***********************************************************

************

**** MONTH 01 JAN**** SUN MON TUE WED

THU FRI SAT**** 02 03

04 05** 07 09 10

11 12** 14 16 17

18 19** 21 23 24

25 26** 28 30 31

***********************************************

************

***********************************************************



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CA-7 DATABASE ENQUIRY:

A FORCAST IS A DISPLAY OF WHAT JOB(S) OR SYSTEM(S)WILL RUN DURING A SPECIFIED TIME PERIOD. IF YOU USE JOBSEQUENCE, THE JOBS ARE LISTED IN JOBNAME ORDER. IF YOUUSE EXECUTION SEQUENCE, THE JOBS ARE LISTED IN THEORDER OF EXECUTION.

THERE ARE TWO TYPES OF FORCASTS AVAILABLE WITH THISFACILITY:

FORCAST - SUMMARY REPORT. MANY JOBSPER PAGE

LISTING START DATE/TIME, ENDDATE/TIME,

TRIGGERING.

FORCAST WITH DETAILS FULL DETAIL REPORT. ONE PAGE PER

JOBLISTING START DATE/TIME, END

DATE/TIME,TRIGGERING, JOBDEPS,

REQUIREMENTS, ETC. )

COMMAND ===> ENTER THE NUMBER WHICHCORRESPONDS TO THE TOPIC YOU WISH TO DISPLAY OR (UP)

TO PRIOR PANEL

Note: Press F1 for help fromany screen for further details



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Important CA-7 Commands:

LACT - lists active jobs

LRDY - lists ready queue jobs

XQM lists the complete requirement of a job

XQJ lists of jobs in alphabetical order of job name

XQN lists the jobs based on ca-7 number

XQ lists the jobs based on first come first serve basis

CANCEL, JOB=JOBNAME, SCHID=050, FORCE=YES, REASON= -

cancels a job and clears the details from CMT also

CANCEL, JOB=JOBNAME, SCHID=050, REASON= - to cancel a

job

HOLD, JOB=JOBNAME, REASON= to hold a job

POST, JOB=JOBNAME to post a job after meeting the

requirement

SUBMT, JOB=JOBNAME to submit a job at specified time

LIST, JOB=JOBNAME list of failed jobs in list queue

LISTDIR, DSN=---------, MEM= - to see how many members in a

pds

LSCHD, JOB=JOBNAME, LIST=SCHD lists all the schids defined

for a particular job

LSCHD, JOB=JOBNAME, LIST=CALS lists the standard calendar

for a particular job

LSCHD, JOB=JOBNAME, LIST=TRIG list of triggered jobs

LSCHD, JOB=JOBNAME, LIST=NODD lists the jobs without dd

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LSCHD, JOB=DID* - list of each job in database with schedule

infoLSCHD, JOB=DID*, ST=EXP - list of each job in database with

schedule summary along with expired jobs also

LPRRN, JOB=JOBNAME lists of jobs which is last successful run

REQUEUE, JOB=JOBNAME when job is failed with syntactical

errors, that job must be requeue

REQUEUE, JOB=JOBNAME, Q=LACT if the job is in active

queue

LCTLG, DSN=TRGD.JOBNAME list of all the triggered jobs

L DSN=FSS254.SAI.PS, LIST=ALL lists the users who is using

the dataset

LQ lists all jobs in ca-7 queue are and tell which queue each

job is in

LQ, JOB=JOB NAME gives status of a job

LQ, JOB=JOB NAME, LIST=RQMT will give the requirements

the job is waiting on

LQ, ST=LATE lists the jobs which is late in all queues

LQ, ST=HELD list of held jobs

LQ, ST=SUBM list of submitted jobs

LQ, ST=ABND list of abended jobs

LJOB, JOB=JOBNAME complete information about job

LJOB, JOB=JOB NAME, LIST=TRIG lists the triggered jobs

LJOB, JOB=JOB NAME, LIST=PROS lists the demanded out jobs

LJOB, JOB=JOB NAME, LIST=RQMT requirement of a particular

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LJOB, JOB=JOBNAME, LIST=SCHD it will give how many schids

are assigned to a particular jobLPROS, JOB=JOBNAME used to get job docs

LPRRN, JOB=JOB NAME lists the last successful run of the job

- Lists start and end times of jobs

- Date and highest condition code

/STOP, Q=ALL to stop the ca-7 database

/HOLD, Q=ALL to put the request and ready queue are in hold

/RELEASE, Q=ALL to release the queue from hold

/START, Q=ALL to start the ca-7 database

/DISPLAY, ST=JCL list of all jcl ids and their associated

libraries

/DISPLAY, ST=JCL list of all jcl ids and associated libraries

/PROF lists and updates ca-7 user profiles

LJES lists of jobs that have been sent to JES

FRJOB, JOB=JOBNAME list of information about predecessors

FRQJOB, JOB=JOBNAME list of information about successors

FSTRUC, JOB=JOBNAME which schid is going to run today

DEMAND, JOB=JOBNAME, SCHID=050, SET=NTR

DEMAND, JOB=JOBNAME, SCHID=050, SET=SKIP

ADDRQ, JOB=JOBNAME, USR= reason to add a request to a

job in the request queue

LRLOG details of previous run since from midnight

LRLOG, JOB=JOBNAME how many times a job getting failed

LRLOG, ST=CANCEL, SPAN=24 list of canceled jobs in last

24hrs



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LRLOG, ST=FORCE, SPAN=24 list of force completed jobs in

last 24 hrsLRLOG, ST=RSTRT, SPAN=24 list of restarted jobs in last

24hours

LRLOG, JOB=JOBNAME, DATE=* - list of jobs in the last 5 days

/D U TAPE, STATUS=ALLOC gives how many tapes are

engaged

/V U, MODE=OFFLINE how many tapes are in offline

/V U, MODE=ONLINE how many tapes are available

/DISPLAY, Q=ALL to display all q

/DISPLAY, ST=JCL used to see all the jcl libraries

/LQ, LIST=USR how many jobs are waiting for user

requirement

LQP, JOB=JOBNAME lists job information in request and ready

Q

LJCL, JOB=JOBNAME lists jcl deck in XQM panel

/DISPLAY, ST=CAL display all calendars

/DISPLAY, FM=SCAL to display all calendars

DA OJOB used to see only active application job



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