How to create Logon groups for JAVA Systems

[DominikP]

Hi,

I am implementing an BI JAVA Landscape. We do have 1 Central Instance(CI) and 2 Dialog Instances (DI) JAVA Standalone. Everything based on NW04s

I have set up a Web Dispatcher to do a load balancing. The Web Dispatcher is connected to the Message Server (MS) of the JAVA CI to get all the information about the Engines.

I am now looking to create Logon groups to distibute the load according the application used applications. I am not sure if there is a possibility to set up logon groups (server groups) directly somewhere in the J2EE engine, or if I have to set this up in the WebDispatcher konfiguration files?!

Thanks in advance and best regards,

Dominik

[Former Member]

Here's the documentation link for doing this "[Using Logon Groups for Load Balancing|http://help.sap.com/saphelp_nwce10/helpdata/en/45/3c61108c604c2ce10000000a1553f6/frameset.htm]". It describes doing this via the nwa and Web Dispatcher configuration files. While the former is recommended we had more success with the latter. Note: don't try doing both ways as they conflict.

Thanks,

William

[Former Member]

We're trying to do something similar with NetWeaver CE 7.1.

According to [this documentation|http://help.sap.com/saphelp_nwce10/helpdata/en/45/3dbe11a82b6bf1e10000000a1553f6/frameset.htm] there are 3 steps to doing this for NetWeaver CE 7.1:

1. Logon Groups

2. Web Dispatcher profile changes

3. HTTP Provider property changes

We've set up a Logon Group in the NetWeaver nwa and associated the two instances (one host) with it.

"[Configuring Logon Groups Using Configuration Files|http://help.sap.com/saphelp_nwce10/helpdata/en/45/3c3f0cad9f4c2de10000000a1553f6/frameset.htm]" says: "...to create the files using HTTP Provider service."

There it doesn't say exactly how to generate those 3 text files; it says: "1. Create the icrgroups.txt and urlinfo.txt files that define the logon groups. For more information, see the documentation of SAP Web Dispatcher." ; but, has no link to what it says to see. So, I manually go to ["SAP Web Dispatcher", "Assigning Logon Groups"|http://help.sap.com/saphelp_nwce10/helpdata/en/b4/9aa8862e714e6db8e74e48e5d3283b/frameset.htm]. But, it all pretty much breaks down there because it's referring to apparently non-NetWeaver CE 7.1 stuff (as near as I can tell); for instance, how do the transactions SMLG and SICF relate to NetWeaver CE 7.1, or am I in the wrong place?

I tried to press ahead with files similar to the examples here, but I hit this error in the Web Dispatcher:

[Thr 5132] *** WARNING => ICT: path prefix /Curam/ not allowed in this context. Only prefix / allowed. [ictxxptab.c 764]

[Thr 5132] *** WARNING => When a file is specified in wdisp/J2EE/url_map_location only URL prefix '/' is supported. See also SAP note 1033470. [icrxx.c 2925]

The note reference looks hopeful, but I cannot read it; I get:

Note 1033470   
 The requested SAP Note is either in reworking or is released internally only

Does anyone have a copy of this Note or knows if it's helpful?

Has anyone done this with NetWeaver CE 7.1?

Tahnks,

William

[Former Member]

Dominik

You can setup zones for your application:

1)Configure Zone separator http://help.sap.com/saphelp_nw04/helpdata/en/56/dcf4c12b072c4e89884dc164b3762c/frameset.htm

2)Setup login groups

http://help.sap.com/saphelp_nw04/helpdata/en/a9/775a421b5ec153e10000000a1550b0/frameset.htm

3)Configure SAP webdispatcher to work with the zones

http://help.sap.com/saphelp_nw04/helpdata/en/87/252c4142aef623e10000000a155106/frameset.htm

Or you can configure the logon groups in sapwebdispatcher configuration:

1) Find out Instance ID names.

2) Set up info.icr file see note 740234

Mine looks like this for 2 dialog instances

#############

Version 1.0

J2EE1088500

J2EE J2eedialoghostname1 50000 LB=100

J2EE1088400

J2EE J2eedialoghostname1 50000 LB=100

############

3)set up icrgroups.txt

Mine looks something like this defining a logon group

INTRANET whit the two dialog instances

#############################

Version 1.0

J2EE1088500

J2EE1088400

INTRANET:J2EE1088400,J2EE1088500

###############################

4)Set up urlinfo.txt to assign urls to logon groups

Mine looks like this.Assigning /nwa to INTRANET logon group

################################

Version 1.0

PREFIX=/nwa/&GROUP=INTRANET

################################

Save files in startup directory of the sapwebdispatcher

5)Edit sapwebdispatch startup profile:

Add following parameters.

wdisp/server_info_location = file://info.icr

wdisp/group_info_location = file://icrgroups.txt

wdisp/url_map_location = file://urlinfo.txt

Startup sapwebdispatcher

Good luck