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LOGON Groups in NWA

pr_srinivas
Contributor
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Where & How can i user logon groups which i create under /nwa link

under SYSTEM MANAGEMENT --> CONFIGURATION -> LOGON GROUPS

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Logon Groups

Logon load balancing increases the efficiency of various work groups. To improve performance and system resource consumption, users are distributed across the available application servers based on the requirements of work group services and load sensitivity. Eah SAP application has different resource requirements, therefore certain applications that may require more servers and logon groups can be created and configured in this view.

==

Rgds

PR

Accepted Solutions (1)

Accepted Solutions (1)

pr_srinivas
Contributor
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Dear

Firstly thank you very much for your quick reply.

We have Web Dispatcher in place. and we configured with message server port in web dispatcher configuration.

Our Scenario :

Portal (JAVA) - DB+CI on 1 host i.e JC09 on host "epspcs2c"

Portal (JAVA) - DI on 2 host i.e J09 on host "epspcs1c"

We have Webdispatcer.

In Web dispatcher's "sapwebdisp.pfl" - we maintained the following values

rdisp/mshost = epspcs2c

ms/http_port = 8108

I have not created any LOGON groups - But the requests are redirecting to across above 2 server and we went into assumption that if web dispatcher points to HTTP Mesage server port. - Message server redirects to the hosts where load is low.

if our conslusion is wrong. - how it is redirecting across 2 servers

of out conclusion is right - with out SAPLOGON groups creation also load balancing taking place & what advantage comes in my scenario if LOGON groups is created.

Please Clarify !!

Thanks in Advance

Rgds

PR

Former Member
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Hi,

your assumption is correct: the web dispatcher uses the message server to get the instances in the cluster, which are available to process user requests. However, this load balancing works perfectly in case you have a homogenous cluster.

In case you would like to have a "heterogeneous" cluster, this is where logon groups come into play. In your example, using logon groups, you could streamline all portal requests to, say, your DI instance on host 2.

Hope that explains things a bit.

Former Member
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Hi Ivanov,

We need the same scenario for one of our customer right now.

We have EP7.0 on HP-UX with Oracle 10g. It has one CI (with four server nodes) and one DI (with four server nodes) both on the same server. We will be installing an additional DI (with four server nodes) on another server for capacity requirements for many of our custom applications.

Right now we have setup webdispatcher to do load-balancing of requests when accessing the portal via webdispatcher.

Now, the scenario is to have a request from particular custom application (in our case it is mypurchases application) to be using logon groups to access the portal. In the logon group we define the second dialog instance, so that the requests from that application can use only the second dialog instance and not any other.

Is this practically possible. If yes, how to achieve this scenario ?

Thanks in advance.

Regards,

Sailesh K

former_member203322
Participant
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Hello

I have the same issue....did you manage to solve the problem ?

thanks and regards

Michele

Answers (2)

Answers (2)

jasen_minov
Discoverer
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Hi,

I think the link below answers to your question why the requests are distributed between the two servers:

<a href="http://help.sap.com/saphelp_nw2004s/helpdata/en/1f/63af32f15e7d479227a9528c5def2a/content.htm#_msocom_1">http://help.sap.com/saphelp_nw2004s/helpdata/en/1f/63af32f15e7d479227a9528c5def2a/content.htm#_msocom_1</a>

You could find more info here:

<a href="http://help.sap.com/saphelp_nw2004s/helpdata/en/42/5cfd3b0e59774ee10000000a114084/frameset.htm">http://help.sap.com/saphelp_nw2004s/helpdata/en/42/5cfd3b0e59774ee10000000a114084/frameset.htm</a>

Best Regards,

J

Former Member
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Hi,

some hints about how to setup logon groups on SAP web dispacher and AS Java, you can see <a href="http://help.sap.com/saphelp_nw04/helpdata/en/45/3c61108c604c2ce10000000a1553f6/frameset.htm">this</a> piece of documentation. Basically, apart from defining the logon groups with the NWA, you should configure few more parameters to enable SAP Web Dispatcher poll the definition of the groups from the server's database.

Hope that helps!