Chapter 01_Background Processing

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2005 IBM CorporationData Interfaces | 7.01 March-2005

Background Processing


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2005 IBM Corporation2 March-2005Data Interfaces | 7.01

Objectives

The participants will be able to:

Describe how the SAP system handles background processing.

Create variants for ABAP programs.

Create, schedule, and analyze a job using transactions SM36 and SM37.

Explain the purpose of background processing.


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Background Processing

Phases of Background Processing.

Passing Data to Subsequent Job Steps.

Scheduling Job within ABAP Program.


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Work Processes

Dispatcher

Background

EnqueueUpdate SpoolDialog

Transaction

SM50


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The Background Work Process

Background

Defining a

background job (SM36)

Background Job A

Step #1

Step #2


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Phases of Background Processing

Job

Processing

Job

Scheduling

Job

Overview


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Scheduling a Background Job

Job

Scheduling

Transaction

SM36


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Creating Step for Background Job

JobScheduling

Steps

ABAP External program


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Start Criteria for Background Job

Jobs can be scheduled to

run immediately or at a

particular date/time.

Jobs can be

scheduled to run

after another job has

been completed.

Jobs can be scheduled

to run after an event has

been triggered/raised.

If you start a job based on a date/time or an event, you

can schedule the job to run at regular intervals, not just

at a particular time.

Job

Scheduling

Immediate After EventAfter JobDate/Time

Start Condition


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Scheduling a Periodic Job

Job

Scheduling

With the Period

Values pushbutton,

you can schedule

the job to run hourly,

daily, weekly,

monthly, etc.

By checking the

Periodic Job option,you can specify

that the job run at

regular intervals.

Periodic jobX

Start date

Period values


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Scheduling Job After Another Job

If you check the Start status-depend.

option, this job will run only if the

specified job ends successfully.

After Job

Start status-depend.X

After clicking on the

After Job pushbutton,you must specify the

name of the job that must

be completed before this

job will run.

Start date

Job

Scheduling


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Scheduling Job After an Event

Job

SchedulingAfter EventStart date

After clicking on the After Event

pushbutton, you must specify thename of the event that must be

raised before this job will run. You

can distinguish between different

occurrences of a particular event

by specifying a parameter.

If you check the Periodic Job option, the

system starts a new job each time the

specified event is raised.


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Triggering/Raising Events

CALL FUNCTION BP_EVENT_RAISEEXPORTING

EVENTID =

EVENTPARM =

TARGET_INSTANCE =

EXCEPTIONS

BAD_EVENTID = 1

EVENTID_DOES_NOT_EXIST = 2EVENTID_MISSING = 3

RAISE_FAILED = 4

OTHERS = 5.

The only required

exporting parameter is the

name of the event to raise.

To trigger/raise an event from within an ABAP program, you

must call the BP_EVENT_RAISE function module.


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Job

Scheduling

Job

Processing

Job

Overview


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Processing a Background Job

Background

Dispatcher

Job

Processing

JobScheduler

Job


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Transaction

SM50

JobProcessing

Application ServerWork Processes

1 Spool8 Online 3 Background


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Scheduler

Start Module

Job Step #1

Job Step #2

Job Step #3

Job Log

Entries from start and endmodules.

All messages issued by job

steps and system.

Job

Processing

List

All WRITEstatement output

from job step.

PRINT SPOOL

End Module


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Job

Scheduling

Job

Processing

Job

Overview


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Transaction

SM37

Job

Overview

Job Status

Job Overview

Spool List

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Job Analysis Using Job Log

Job

OverviewSystem and Program

Messages

You can use this Job Log to analyze each step of a finished or

cancelled background job.

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Job Analysis Using Job Spool

Display

Report

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Other BackgroundProcessing Topics

Passing Data to Subsequent Job Steps

Scheduling Job within ABAP Program

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Scheduling Job withinABAP Program

Open Background Job

JOB_OPEN

Insert Job Step

JOB_SUBMIT

Close Background Job

JOB_CLOSE

JOB_SUBMIT iscalled for each

step that is to be

added to the job

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JOB_OPEN

JOB_OPEN Background Job

Exporting:

jobname =

Importing:

jobcount =

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JOB_SUBMIT

JOB_SUBMIT

Background Job`Exporting:

authcknam =

jobcount =

jobname =

report = variant =

Step #1

Step #2

Exporting:

authcknam =

jobcount = jobname =

report =

variant =

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JOB_CLOSE

JOB_CLOSE Background Job

Exporting:

jobcount =

jobname =

sdlstrtdt = sdlstrttm =

strtimmed =

Importing:job_was_released =

Step #1

Step #2

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ABAP Program Example

REPORT YDI00001.

DATA: JOBNUM LIKE TBTCJOB-JOBCOUNT.

PARAMETERS: JOBNAME LIKE TBTCJOB-JOBNAME,

PROGRAM LIKE SY-REPID,

VARIANT LIKE RALDB-VARIANT,

USER LIKE SY-UNAME.

CALL FUNCTION JOB_OPEN

EXPORTING JOBNAME = JOBNAME

IMPORTING JOBCOUNT = JOBNUM.

CALL FUNCTION JOB_SUBMIT

EXPORTING AUTHCKNAM = USER

JOBCOUNT = JOBNUM

JOBNAME = JOBNAMEREPORT = PROGRAM

VARIANT = VARIANT.

CALL FUNCTION JOB_CLOSE

EXPORTING JOBCOUNT = JOBNUM

JOBNAME = JOBNAME.

Open Job

Submit Step

Close Job

SY-SUBRC

CHECK

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Passing Data to SubsequentJob Steps

Background Job

Step #1

. . .

EXPORT TO DATABASE

ID .

EXPORT < obj1 objn>TO DATASET

ID .

Step #2

. . .

IMPORT < obj1 objn> FROM DATABASE

ID .

IMPORT < obj1 objn> FROM DATASET

ID .

DBTABLE

id1 data1

.

.

FILENAME

id2 data2

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Passing Data to SubsequentJob Steps (Contd.)

Background Job

Step #1

. . .

EXPORT TO DATABASE

ID .

EXPORT < obj1 objn>TO DATASET

ID .

Step #2

. . .

IMPORT < obj1 objn> FROM DATABASE

ID .

IMPORT < obj1 objn> FROM DATASET

ID .

DBTABLE

id1 data1

.

.

FILENAME

id2 data2

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Background JobStep #1TABLES: INDX.

DATA: var1(9) TYPE p

DECIMALS 2.

. . .

EXPORT var1 TO DATABASEindx(st) ID 12345

Step #2

TABLES: INDX.

DATA: var1(9) TYPE pDECIMALS 2.

. . .

IMPORT var1 FROM

DATABASE indx(st) ID

12345.

INDX

MANDT RELID SRTFD CLUSTR

800

800

800

800

SP

ST

ST

TM

.. CLUSTD

SPH_I

12345

ABCL

KVERM

254

53

73

97

FF05010102

FF05016876

FF05075372

FF03578902

Using the Database to Pass Data between Job Steps

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Background JobStep #1TABLES: INDX.

DATA: var1(9) TYPE p

DECIMALS 2.

. . .

EXPORT var1 TO DATABASEindx(st) ID 12345

Step #2

TABLES: INDX.

DATA: var1(9) TYPE pDECIMALS 2.

. . .

IMPORT var1 FROM

DATABASE indx(st) ID

12345.

INDX


800

800

800

800

SP

ST

ST

TM

.. CLUSTD

SPH_I

12345

ABCL

KVERM

254

53

73

97

FF05010102

FF05016876

FF05075372

FF03578902

Using the Database to Pass Data between Job Steps (Contd.)

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INDX


800

800

800

800

SP

ST

ST

TM

... CLUSTD

SPH_I

12345

ABCL

KVERM

254

53

73

97

FF0501010254787

FF0501687618710

FF0507110005472

FF0357890541472

Structure of the Data Cluster Table

SRTF2

0

0

0

0

Client

Area

Key fields touniquely identify

Data Cluster

ClusterLength

Cluster

Data

Fields to store information pertaining tocluster data, not automatically updated byexport, need to be explicitly set before the

export statement

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Structure of the Data Cluster Table (Contd.)

INDX


800

800

800

800

SP

ST

ST

TM

... CLUSTD

SPH_I

12345

ABCL

KVERM

254

53

73

97

FF0501010254787

FF0501687618710

FF0507110005472

FF0357890541472

SRTF2

0

0

0

0

Client

Area

Key fields touniquely identify

Data Cluster

ClusterLength

Cluster

Data

Fields to store information pertaining tocluster data, not automatically updated byexport, need to be explicitly set before the

export statement

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Demonstration

Creation, scheduling and analyzing a background job using transactions SM36and SM37.

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Practice

Creation, scheduling and analyzing a background job using transactions SM36and SM37.

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Step #1

Step #2

Background

Job Log

Spool List

JobScheduling

JobProcessing

JobOverview

Summary

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Questions

What are the various types of work processes present in the R/3 system ?

What are the main phases of background processing ?

What are the main function modules used to create background job through

ABAP program ?

Chapter 01_Background Processing

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