'Antwort: Re: Dialog instance installation'

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List:       mysap-linux-general
Subject:    Antwort: Re: Dialog instance installation
From:       "Dietmar Stein" <DStein () phoenixcontact ! com>
Date:       2002-06-24 6:12:19
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Hi

I solved my needs on Friday. Now I have got two dialog instances running,
which are load balanced. We are using SAP R/3 4.6C SR2 and Oracle 8i
database on Linux (SuSE SLES7).

Next step would be to disallow any connections to the central instance so
that users could connect to dialog instances only.

Thanks, Dietmar

                                                                                      \

                      Huseyin Bilgen                                                  \

                      <huseyin.bilgen@basiscons         An:      Dietmar Stein \
                <DStein@phoenixcontact.com>                                      
                      ultant.com>                       Kopie:   \
                linux.general@listserv.sap.com                                        \

                                                        Thema:   Re: Dialog instance \
                installation                                               
                      21/06/02 15:37                                                  \

                      Bitte antworten an                                              \

                      huseyin.bilgen                                                  \

                                                                                      \

                                                                                      \

Hi Dietmar,
First of all, please provide us information about your platform choice.
OS/DB?
You must consider that, on each Dialog instance, Database ( doesn't
matter which one you select ) Client software must be installed, so that
Diaglog instance can be seen via R3trans.
for your second question,
You are already installed message server when you installed central
instance.
There is two options for load balancing:
1. let the message server routes users to dialog instances or central
instance according to load on each server. message server will select
the instance with less load.
2. create user groups via SMLG and assign them to specific instances.by
this way you can also assign a backup instance for user group so that
users can logon via backup instance when their primary instance is down.

i hope i helped you.
For more questions you can have a look at my site:
http://www.basisconsultant.com

Regards
Huseyin Bilgen
Certified SAP Basis Consultant

Dietmar Stein wrote:

> Hello
> 
> 
> I am new to the list, but went through the archive first, but I found no
> similar question or a related topic / answer.
> 
> I am setting up a R/3 installation (4.6C SR2) for testing purposes and we
> do want to have a central instance host, with database on it, and
different
> hosts with dialog instances on it.
> 
> First, we like to have one or two dialog instance (application servers as
> named in the installation document). A graphic within the installation
> manual shows a similiar setup (page 18) with a central instance and two
> (three to be true) dialog instances, named D00 and D01 on two different
> hosts. What name must / can the central instance have? I have decided Z01
> for central and D00 for dialog, but I get error message "Database is not
> available via R3trans on the remote host" when I start sap on the dialog
> host. Is it a wrong name decision?
> 
> Second we like to have load balancing or login balancing so to say. If a
> user connects to the dialog instances it should be chosen by system on
> which dialog host he connects. Do we need a message server therefore and
> how to set it up? I can't find any documentation about it?
> 
> Third we like to separate central instance and database; could the central
> instance be load balanced in any way with SAP software or can't it be
> balanced at all?
> 
> 
> Regards,
> 
> Dietmar Stein
> 
> _______________________________________________
> linux.general mailing list
> linux.general@listserv.sap.com
> http://listserv.sap.com/mailman/listinfo/linux.general
> 
> 
> 

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