topic Re: diff appli and pres in Application Development and Automation Discussions

diff appli and pres

Former Member — Fri, 26 Jan 2007 07:12:00 GMT

what is the difference between application server and presentation server, which server is used in the BDC

Re: diff appli and pres

Former Member — Fri, 26 Jan 2007 07:14:25 GMT

You can use both the servers to upload the data for running BDC. The program always executes on application server and updates data in Database server of SAP.

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Re: diff appli and pres

rahulkavuri — Fri, 26 Jan 2007 07:15:51 GMT

It does not matter from where you are passing your data onto to BDC as finally the contents within a internal table are finally used for processing

presenation server would be your desktop from where you might me uploading ur data onto the internal table

application server is SAP Memory where you have already uploaded your data from presentation server

We use application server in the cases where the user need not again upload the data from presenation server.

We can save the generated report (download) into the application server and we can hard code the path in case the program uses the same application server file always

You can view application server files using AL11 transaction

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Re: diff appli and pres

Former Member — Fri, 26 Jan 2007 07:16:11 GMT

presentation server is the one which you see and feel and with which you interact by giving inputs and take outputs.

Application server is the one which is underlying the presentation server and all the programs and applications exist in this layer. It fetches data from the underlying database layer, processes it and presents it to the presentation layer.

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Abhishek

Re: diff appli and pres

Former Member — Fri, 26 Jan 2007 07:18:07 GMT

you can use both servers as per the requirement.

Presentation Server

The presentation server is actually a program named sapgui.exe. It is usually installed on a user's workstation. To start it, the user double-clicks on an icon on the desktop or chooses a menu path. When started, the presentation server displays the R/3 menus within a window. This window is commonly known as the SAPGUI, or the user interface (or simply, the interface). The interface accepts input from the user in the form of keystrokes, mouse-clicks, and function keys, and sends these requests to the application server to be processed. The application server sends the results back to the SAPGUI which then formats the output for display to the user.

Application Server

An application server is a set of executables that collectively interpret the ABAP/4 programs and manage the input and output for them. When an application server is started, these executables all start at the same time. When an application server is stopped, they all shut down together. The number of processes that start up when you bring up the application server is defined in a single configuration file called the application server profile.

Each application server has a profile that specifies its characteristics when it starts up and while it is running. For example, an application sever profile specifies:

Number of processes and their types

Amount of memory each process may use

Length of time a user is inactive before being automatically logged off

The application server exists to interpret ABAP/4 programs, and they only run there-the programs do not run on the presentation server. An ABAP/4 program can start an executable on the presentation server, but an ABAP/4 program cannot execute there.

If your ABAP/4 program requests information from the database, the application server will format the request and send it to the database server.

regds,

kiran

Re: diff appli and pres

SantoshKallem — Fri, 26 Jan 2007 07:18:11 GMT

from both servers u can upload.

if it is in application server, have to use DATASETS.

HI sunil. Try to search in the forum for all u r doubts. it it won't solve u r problem then post it.

Regards..

santhosh reddy

Re: diff appli and pres

Former Member — Fri, 26 Jan 2007 07:18:12 GMT

You can use both the servers in BDC. if you are running the program in foreground, you can store your files on both application and presentaion server, but if you are running in background, then upload the file into application server only.

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Cheers

Abhishek