Why should we go for job instead of trigger

hi all,
whats the exact purpose of job n trigger?
why should we go for job instead of trigger?
any one pls help me regarding this
thnaks in advance.

When you have code that is to be called, implementing it with a trigger leaves the process synchronous. In other words: the code is executed within the same transaction as the invoking code. This means real-time, but it makes your transaction heavier. Implementing it with a job, makes it asynchronous. In other words: the code gets executed in another session. Now it is not real-time anymore, but since it is executed in the background, nobody cares anymore how long it takes (to a certain point of course).
Regards,
Rob.

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> 1) how customer gets benifit out of this esoa...??? how it solves customer problems in present market.??
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>
> 3) If it is a wsdl, why should we go for PI 7.1 only...we can also generate wsdls from all previous versions ?
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>
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lothar_m wrote:
in my machine netcfg really takes some time too.
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Off topic: Nice Blackadder Quote you have as a signature ;-)

Why we will go for Queue delta instead of Unserialized and Direct delta ?

Hi Experts,
Why we will go for Queue delta instead of Unserialized and Direct delta ? specify any reasons for that ?
What happens internally when we use Queue delta , Direct delta ?
I will allocate points to those who help me in detail. My advance thanks who respond to my query.

Hi,
Direct Delta
With this update mode, extraction data is transferred directly to the BW delta queues every time a document is posted. In this way, each document posted with delta extraction is converted to exactly one LUW in the related BW delta queues. If you are using this method, there is no need to schedule a job at regular intervals to transfer the data to the BW delta queues. On the other hand, the number of LUWs per DataSource increases significantly in the BW delta queues because the deltas of many documents are not summarized into one LUW in the BW delta queues as was previously the case for the V3 update.
If you are using this update mode, note that you cannot post any documents during delta initialization in an application from the start of the recompilation run in the OLTP until all delta init requests have been successfully updated successfully in BW. Otherwise, data from documents posted in the meantime is irretrievably lost. The restrictions and problems described in relation to the "Serialized V3 update" do not apply to this update method.
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Queued Delta
With this update mode, the extraction data for the affected application is compiled in an extraction queue (instead of in the update data) and can be transferred to the BW delta queues by an update collective run, as previously executed during the V3 update.
Up to 10,000 delta extractions of documents to an LUW in the BW delta queues are cumulated in this way per DataSource, depending on the application.
If you use this method, it is also necessary to schedule a job to regularly transfer the data to the BW delta queues ("update collective run"). However, you should note that reports delivered using the logistics extract structures Customizing cockpit are used during this scheduling. This scheduling is carried out with the same report which is used when you use the V3 updating (RMBWV311, RMBWV312 or RMBWV313).There is no point in scheduling with the RSM13005 report for this update method since this report only processes V3 update entries. The simplest way to perform scheduling is via the "Job control" function in the logistics extract structures Customizing Cockpit. We recommend that you schedule the job hourly during normal operation - that is, after successful delta initialization.
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In the posting-free phase during the recompilation run in OLTP, you should execute the update collective run once (as before) to make sure that there are no old delta extraction data remaining in the extraction queues when you resume posting of documents.
Using transaction SMQ1 and the queue names MCEX11, MCEX12 or MCEX13 you can get an overview of the data in the extraction queues.
If you want to use the functions of the logistics extract structures Customizing cockpit to make changes to the extract structures of an application (for which you selected this update method), you should make absolutely sure that there is no data in the extraction queue before executing these changes in the affected systems. This applies in particular to the transfer of changes to a production system. You can perform a check when the V3 update is already in use in the respective target system using the RMCSBWCC check report.
In the following cases, the extraction queues should never contain any data:
- Importing an R/3 Support Package
- Performing an R/3 upgrade
For an overview of the data of all extraction queues of the logistics extract structures Customizing Cockpit, use transaction LBWQ. You may also obtain this overview via the "Log queue overview" function in the logistics extract structures Customizing cockpit. Only the extraction queues that currently contain extraction data are displayed in this case.
The restrictions and problems described in relation to the "Serialized V3 update" do not apply to this update method.
This update method is recommended for the following general criteria:
a) More than 10,000 document changes (creating, changing or deleting a document) are performed each day for the application in question.
b) In future delta initializations, you must reduce the posting-free phase to executing the recompilation run in R/3. The document postings should be included again when the delta Init requests are posted in BW. Of course, the conditions described above for the update collective run must be taken into account.
Un-serialized V3 Update
Note: Before PI Release 2002.1 the only update method available was V3 Update. As of PI 2002.1 three new update methods are available because the V3 update could lead to inconsistencies under certain circumstances. As of PI 2003.1 the old V3 update will not be supported anymore.
With this update mode, the extraction data of the application in question continues to be written to the update tables using a V3 update module and is retained there until the data is read and processed by a collective update run.
However, unlike the current default values (serialized V3 update); the data is read in the update collective run (without taking the sequence from the update tables into account) and then transferred to the BW delta queues.
The restrictions and problems described in relation to the "Serialized V3 update" do not apply to this update method since serialized data transfer is never the aim of this update method. However, you should note the following limitation of this update method:
The extraction data of a document posting, where update terminations occurred in the V2 update, can only be processed by the V3 update when the V2 update has been successfully posted.
This update method is recommended for the following general criteria:
a) Due to the design of the data targets in BW and for the particular application in question, it is irrelevant whether or not the extraction data is transferred to BW in exactly the same sequence in which the data was generated in R/3.
Thanks,
JituK

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Why should we select all key fields when using for all entries

Hi,
Why should we select all key fields in our select query when using for all entries statement?
I read about for all entries but this point was not clear in any post.
Please explain me
Regards,
Subhashini

Dear Subhasini,
It is because FOR ALL ENTRIES deletes the duplicate entries before populating the target internal table.
Please do an F1 on FOR ALL ENTRIES & read the SAP documentation.
I mean how duplicate entries will not get deleted when we use this?
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BR,
Suhas
Edited by: Suhas Saha on Oct 16, 2009 9:41 AM

Why should we go for job instead of trigger

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