WebDispatcher on ABAP and JAVA on serperate Servers

[Former Member]

Hi all,

i read a lot of hours trough post concerning issues about web dispatcher, but i didn't find anything that suits my problem.

We have a MSCS-Cluster. One Node has the db which is for ABAP and JAVA (different schemas).

Than we have an SCS for ABAP and one for JAVA.

So the ABAP and JAVA-Instances are physically separated.

Now we want to use a web dispatcher to pass the requests to the right destination.

But i am not sure how to set it up. Do we need 2 dispatcher, or can one handle the requests. How does the dispatcher knows, where to redirect the requests ?

Is that done with the parameter icm/HTTP/redirect_<xx> ?

in hope of any advise to this problem

yours

BjoernTrabes

[Former Member · Accepted solution]

Hi,

You have to connect the web dispatcher to the Abap Message server.

The ICM wil be able to redirect the http requests to the abap or java stack.

By default, all URLs beginning with /sap go to the abap stack and all others to the Java stack.

And of course you get a problem with the standard URL /Systeminfo which is java based...

Regards,

Olivier

[Former Member · Accepted solution]

So, i tested around a little bit.

i am not clear with the function of the dispatcher.

When i bind the ABAP Dispatcher, than all requests to /sap/ are handled by the ABAP-Stack an are working, but when i browse to an Adress like /irj/portal/ the dispatcher says that the Adress is noch reachable.

When i bind the dispatcher to the Java-Stack, than all Java-Adresses work, but the /sap/ not, which is the ABAP Stack.

so, i don't know exactly where my fault is.

How knows the Dispatcher, where the ABAP or JAVA-Stack is.

On an other Machine where the java is an add-in, it works quite well, but on this server the abap and Java Servers are physically separated.

greets

Bjoern

Edited by: Björn Trabes on May 18, 2009 10:59 AM

[Former Member · Accepted solution]

Hi,

>On an other Machine where the java is an add-in, it works quite well, but on this server the abap and >Java Servers are physically separated.

Well, that's the point : what I described runs only on an add-in system. I am afraid that you need 2 different web dispatchers if Java is installed as a separate stack.

If you absolutely need a single HTTP point of entry, you have to install a third web dispatcher (or an Apache reverse proxy) in front of the abap and the java web dispatcher.

Regards,

Olivier

[Former Member · Accepted solution]

ok, that's what i needed to know

thanks a lot

Bjoern

[Former Member]

Hi,

Have a look at note 834184.

narsi

[Former Member]

have a look at this

[http://help.sap.com/saphelp_nw70/helpdata/en/ea/c30829166944edbc74b3c805bf529f/content.htm]

[http://help.sap.com/saphelp_nw70/helpdata/en/0b/25453cf1fcc85ee10000000a11402f/content.htm]