topic Re: asynchronous update in Application Development and Automation Discussions

asynchronous update

Former Member — Mon, 17 Dec 2007 11:41:47 GMT

Hi to all Guru's,

1.can anybody explain me what is asynchronous update?

2.Which one of the following is an example of an asynchronous update?

a) insert wa into ztable.

b) call function 'update_table' in update task.

c) update ztable from ztable.

d) modify ztable from wa.

Thanks

Priya

Re: asynchronous update

ThomasZloch — Mon, 17 Dec 2007 11:49:45 GMT

which test are you taking there, my friend?

async update -> process A triggers a DB update in process B, but does not wait for process B to finish.

2.b)

Re: asynchronous update

Former Member — Mon, 17 Dec 2007 11:53:04 GMT

hi,

asynchronous update means at single shot we can update 'N' no of records to database...

reward points if helpful...

Re: asynchronous update

Former Member — Mon, 17 Dec 2007 11:53:41 GMT

Hi Thomas ,

can you explain me what is asynchronous update?

it will be a fever for me

Thanks

Priya

Re: asynchronous update

Former Member — Mon, 17 Dec 2007 12:02:34 GMT

Hi maddipatla,

can u tel me Which one of the following is an example of an asynchronous update?

a) insert wa into ztable.

b) call function 'update_table' in update task.

c) update ztable from ztable.

d) modify ztable from wa.

Thanks & Regards

Priyalatha

Re: asynchronous update

Former Member — Mon, 17 Dec 2007 12:06:19 GMT

Hi,

B&C.........

Re: asynchronous update

Clemenss — Mon, 17 Dec 2007 12:12:23 GMT

Hi,

I'm so happy I found the answer:

[sap abap asynchronous update|http://www.google.com/search?num=100&hl=de&newwindow=1&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=sapabapasynchronous+update&spell=1]

Regards,

Clemens

Re: asynchronous update

Former Member — Mon, 17 Dec 2007 12:14:11 GMT

Hi ,

The perfect solution is Calling the Update Function module i.e b.

Because,

whenever u use a standard update Function module, it will update the data into all the relevat tables , with validations .

where as the other options like insert/update /modify will change/insert the data from datbase table without any validations.

Revrt back if any issues,

Regards,

Naveen

Re: asynchronous update

Former Member — Mon, 17 Dec 2007 12:18:46 GMT

good

Synchronous calls are slower but should be used for transactions that are updating the database because control is not passed back to the program until a successful database commit (or rollback) has been executed. Note this the real SQL commit at the database level not the ABAP command COMMIT WORK. Synchronous calls will set the return code (sy-subrc) if an error is encountered. There are actually two synchrounous update modes:

'S', Synchronous update mode makes database entries describing the updates to be done and an update task (potentially running on a different computer) reads those database entries, does the update, and then deletes the entries describing the update task.

'L', Local update mode describes the updates to be done in the memory of the current process. No entries are made in and then deleted from the database describing the update task.

Asynchronous calls are the default if the UPDATE parameter is not specified. Asynchronous calls do not effect the return code (sy-subrc).

Note - This is opposite of how synchronous/asynchronous workflow tasks behave, in the sense that control is returned to the workflow in a synchronous step even if there is no commit or rollback encountered!

c-> updte ztable from ztable is the example of asynchronous update.

thanks

mrutyun^