Balancing Server Usage

Hello
I am looking for some pointers and ref materials.
How does one go about working out what a machine can handle and when we need to invest in more equipment? I realize that this is a "wide open" question as it all relates to how busy the users are on the system. But there must be some basic guidelines that can be used.
If I use the following information as a baseline can someone help with a starting point?
Services used :
Address Book
iCal
iChat
Mail
Wiki server (main use)
Accounts/stock Database (Hansaworld)
FTP (very low use)
Open Directory / DNS
Currently the load is still small but we see this raising to around 50 users over the next 18 months, all mac machines.
Let me define a user here, each user has a "local' account on their desk top machine and do not have network accounts they do most of their work within the wiki server and have access to the database on the server.
Current machine is a base xServe 2.26 quad with 10.6.4
Our current limiting factor is our connectivity and this will have to be resolved too but that another post !
I know its a hit and miss type thing but any input will be greatly appreciated .. Many Thanks

> We are at starting stage of SAP core project implementation with EHp4, so we would like to take your suggestions and recommendations on storage systems.
> We need suggestions on best storage as mentioned above.
What do you mean with "best storage"? Are you talking about how many disks etc.?
Markus

Similar Messages

Load Balancing Server Error

Hi Expert's
          I am working on Netweaver BI integrated with EP. while creating JCo destinations for both model and meta data, we have an option of selecting load balancing server and application server. the connection with application server is working fine but when come's to load balancing server it is asking for system group.
         Added to this we are working on single server. Pls let us know is system group is necessary? also let us know where to create system group?
Regards
Subbaraju

Hi Ashok,
           As I already mentioned we are working on BI 7.0 We are facing problem while Configuring JCo destinations In JCo we have maintained Meta and Model Data using load balancing server and application server Now when using Tr.RSPLAN and selecting START MODELER it is routing into local host. But after logging, It is routing to standard SAP host (host=pwdfm101) instead of our local host .
Note: Routing means opening the web Dynpro page.
I hope this makes things clear.
Regards
Subbaraju

Load balancing server names

My Application is handled by three load balanced servers.I have a functionality in which first i send a request for a document printing.This request is posted in Database.Then a backend script runs and takes each requets in DB and executes and creates a file and places in server space. This works fine when i have only one server.But when i have load balanced servers user can give request for print from one server(he does know where from he is giving) and backend shell scripts can take the OPEN record from DB and execute in another server.So user is not able to find the document thought his request is processed.I have tried to know the DNS names of teh server whose are taking the print request so that i can track. But when i check with ServletRequest.getServerName() but i always get the application URL not teh specific load balance server name. I am tryong my luck with java.net.InetAddress

Hey i could solve this problem. i have used java.net.InetAddress class and its methods to know the system name on which my code is executing.
Viswanath

Load balance server

Hello all,
I am using Hyperion v11.1.1.1.0.
I want to install FDM 11.1.1.
Will it work fine with hyperion 11.1.1.1.0?
It is written in the documentation that we need to install & configure Load Balance Server
properly prior to installing FDM.
How to install Load balance server and from where will I get the software for Load balance server?
Thanks

As Gilles said you need to make sure that the return traffic from the real server should come back to CSS.
Your routing infrastructure should ensure that flow should be the following for both "real server in the same DC" & "Real Server in Different DC".
1. Client Traffic should hit the VIP configured on CSS.
2. CSS should forward the client request to the Selected Real Server.
3. Real Server's Response should reach CSS. (It should not go to Client directly)
4. CSS should send the response on Real Server's behalf.
As long as the above conditions are met you are fine. Step 3 is the key and becomes could become tricky for Remote Real Servers.
HTH
Syed Iftekhar Ahmed

Error in creation of JCO with Load balancing server

Hi,
We are using a ABAP user base for our WEBAS server 6.40 (with ABAP+JAVA). i have created a Public group in concerned ECC 5.0 system. I have already configured SLD, and then i maintain data supplier bridge in SLD and run RZ70 in ECC 5.0 system to load system information.. i can see details in SLD ..
now i am trying to create JCO connections .. here i am unable to create JCO with load balancing option.. i get
com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to message server host failed Connect_PM TYPE=B MSHOST=<servername> GROUP=PUBLIC R3NAME=SID MSSERV=sapms<SID> PCS=1 ERROR service 'sapms<SID>' unknown TIME Fri Jun 16 12:41:20 2006 RELEASE 640 COMPONENT NI (network interface) VERSION 37 RC -3 MODULE ninti.c LINE 505 DETAIL NiPGetServByName2: service 'sapms<SID>' not found SYSTEM CALL getservbyname_r COUNTER 1
i am able to create single server JCO, but it fails in load balancing.. is there anything i have missed out in settings...
Thanks and regards,
Sudhir

Thanks, Bogdan Rokosa
I have the same problem,and solved it following the steps provided by Bogdan Rokosa :
you must insert an entry for your R3 system
(like: sapms<SID> 3600/tcp)
in services file
(C:\WINDOWS\system32\drivers\etc\services) on Java WAS.
I test the Jco successful without restart J2EE Engine.

Load Balancing, Server and / or Client ?

Hi
I am experiencing a problem with the connection pooling in odp.net. I have a simple test app that creates a connection, executes a query, populates an object then closes the connection. I have found that when I have client side load balancing on via the odp.net connection string property many connections are made unnecessary (sometime the actual number created reaches the max pool size but the numbers differ randomly). It appears that rather than a free connection in the pool being used more connections are being created which defeats the point of having a connection pool. I do have server side load balancing configured correctly also. Due to this finding can someone possibly answer the following questions.
a) Do I need both server side and client side load balancing set?
b) If I do why is the above behaviour being seen? If not could you give me a short explanation as to why not?
Current set up is 11g (patched to 6, awaiting 7 to be applied) RAC, 2 nodes.
Below is the C# code used while testing this. The table queried is a simple person table containing 16000 rows if data.
OcConnection = "User Id=XXX; Password=XXX; Connection Lifetime = 60; Data Source=(DESCRIPTION=(ADDRESS_LIST=(FAILOVER=on)(LOAD_BALANCE=off)(ADDRESS=(PROTOCOL=tcp)(HOST=XXX)(PORT=1521))(ADDRESS=(PROTOCOL=tcp)(HOST=XXX)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=MyFirstTest))); Pooling=true; HA Events = true; Load Balancing = true";
Code:-
Oracle.DataAccess.Client.OracleConnection con;
con = new Oracle.DataAccess.Client.OracleConnection();
con.ConnectionString =OcConnection;
con.Open();
// the command object to use for this test
OracleCommand cmd = con.CreateCommand();
cmd.CommandText = "select * from PERSON";
OracleDataReader rdr = cmd.ExecuteReader();
List<test> listTest = new List<test>();
while (rdr.Read())
test dc = new test();
if (!rdr.IsDBNull(0))
dc.id = Convert.ToInt32(rdr.GetValue(0));
if (!rdr.IsDBNull(1))
dc.forename = rdr.GetString(1);
if (!rdr.IsDBNull(2))
dc.surname = rdr.GetString(2);
if (!rdr.IsDBNull(3))
dc.street = rdr.GetString(3);
if (!rdr.IsDBNull(4))
dc.city = rdr.GetString(4);
if (!rdr.IsDBNull(5))
dc.postcode = rdr.GetString(5);
if (!rdr.IsDBNull(6))
dc.country = rdr.GetString(6);
if (!rdr.IsDBNull(7))
dc.email = rdr.GetString(7);
if (!rdr.IsDBNull(8))
dc.dateadded = rdr.GetDateTime(8);
if (!rdr.IsDBNull(9))
dc.randWords = rdr.GetString(9);
if (!rdr.IsDBNull(10))
dc.uniqueNumber = Convert.ToInt32(rdr.GetValue(10));
listTest.Add(dc);
rdr.Close();
con.Close();
rdr.Dispose();
cmd.Dispose();
con.Dispose();
Thanks for your time
Victoria

Here are the HTTP Headers as monitored on the client side. Notice the good.txt file includes a GET as it's initial request. All works fine in this case. However, the initial request in the bad.txt is a POST. This is odd since the URL was opened using the same shortcut in both incidents and the browser was closed between each trace that was taken. I've also reviewed the shortcut with notepad to verify it does not include unwanted data such as the JSESSIONID info....etc.
Once you have reviewed the HTTP headers, I have these questions.
1. IIS is sending the 100 Continue messages as you mention, but why is the CSS injecting the cookie in a 100 response that is not typically processed by the client? The bad.txt file shows the client receiving two ARPT cookies because the first cookie in the 100 continue response was ignored.
2. I know Cisco is not really in the business of troubleshooting browser behaviour. But do you know why the browser would behave differently....GET in one request and a POST in the next? We do not wish to get into modifying the browser, so I'm hoping we can provide a solution on the server side that will allow the browser to function this way if it chooses to do so. Do you think it would make sence to push the state management up a level to the cookie handed out by JRUN? This way, the cookie would not be handed back in a 100 response from IIS, and we could tell the CSS to monitor the JRUN cookie. Of course this would require we determine how to manage this cookie either by modifying to cookie to have static data for each server, or by using the right method of hashing...etc.
Chris

System with load balancing server

Hi All,
We are having SAP NW 7.0 Portal and back end we have R3 implemented in a cluster environment. The system object in EP have used "System with Load balancing" template; using the LOGON group and the other related parameters.
But we have some problem with the ITS and WAS parameters; since we are using some Transaction iViews.
Let me explain.. for the R3 cluster we have 2 systems PROD1.domain.ext and PROD2.domain.ext. Now in the system object in portal, how to specify the parameters for ITS and WAS parameters? Since the host name in these we need to specify a single server which defeats the basic purpose of having clustered environment.
Can any one please help in resolving this issue.
Thanks,
Sravanthi

Hi Sravanthi,
Please check the below for finding ITS and WAS parameters from backend :
For ITS - Go to SE37 >> Utilities >> Setting >> Click on ICON Right Top Corner in popup window >> Select Internet Transaction Server >> you will find the Standard Path and HTTP URL.
For WAS - Go to SE37 >> Run FM - RSBB_URL_PREFIX_GET >> Execute it >> you will find PRefix and PAth paramter for WAS.
Please refer to this may help step-by-step : How-to create a portal system for using it in Visual Composer
Hope it helps
Regards
Arun

Webdispatcher SSL load balance server mismatch errors

We are setting up a webdispatcher to access an Enterprise Portal with multiple instances. Currently it is working but we are having to overide host mismatches. in webdispacther log we see
[Thr 4856] Mon Mar 07 11:38:02 2011
[Thr 4856] MatchTargetName("aaa.mycompany.com", "CN=bbb.mycompany.com, OU=xxx, O=ooo, L=ccc, SP=sss, C=US") FAILS
[Thr 4856] SSL NI-sock: local=##.21.13.137:50746 peer=##.21.13.131:51001
[Thr 4856] <<- ERROR: SapSSLSessionStart(sssl_hdl=0000000008565100)==SSSLERR_SERVER_CERT_MISMATCH
The Portal instances are on
aaa.mycompany.com
bbb.mycompany.com
Currently have a CA approved certificate for each server installed in the portal. Dispatcher on aaa uses aaa cert, dispatcher on bbb uses bbb cert.
Message server is on aaa, but it will load balance and place you on either instance.
have following related parameters
wdisp/ssl_encrypt = 2
wdisp/ssl_auth = 2
wdisp/ssl_cred = C:\usr\sap\XXX\W00\sec\XXX.pse
wdisp/ssl_certhost = aaa.mycompany.com
wdisp/ssl_ignore_host_mismatch = TRUE
C:\usr\sap\XXX\W00\sec\XXX.pse has ssl cert of both aaa and bbb servers.
All seems to be working, as users are load balancing. They are not getting certificate mismatches in their browser anymore. We are getting the SSSLERR_SERVER_CERT_MISMATCH errors, but the messages do not seem to cause an issue since we have wdisp/ssl_ignore_host_mismatch set.
Can we eliminate those mismatch errors instead of masking the problem with wdisp/ssl_ignore_host_mismatch?
Should each portal instance have their own ssl cert, or is there a way to use one cert such as the aaa.mycompany.com cert on each portal instance? It seems like that might eliminate the mismatch errors. However, what happens when you go directly to the bbb.mycompany.com portal instance? there is a certificate error if you specify aaa's and you go to bbb. I was wondering if the wdisp/ssl_auth and wdisp/ssl_certhost are valid in the portal system so that each server uses the aaa server and certificate. I could not tell if this parameter is valid for java-only portal systems.
Thanks for your help.
Edited by: Fett Patrick on Mar 7, 2011 8:35 PM

Thank you Martin for your prompt reply. Can you clarify please, can we use the wdisp/ssl_certhost parameter in the instance profiles of the portal instances? I wasn't sure if that is only valid for webdispatchers or can also be used in abap/java systems?
We orginally had the aaa server certificate listed for each dispatcher in the portal under ssl provider runtime server identity. That caused a browser "certificate error" when accessing the bbb server. So we then installed an ssl certificate for bbb for its dispatcher. We could then go to either server with no browser "certificate mismatch" error.
Then when we added the webdispatcher, we started getting the server mismatch errors at the webdispatcher level. If the wdisp/ssl_certhost can be used in the portal profiles, then that would hopefully resolve direct access or via web dispatcher aceess mismatches. I.E. only the aaa ssl certificate would be used and parameters would be set at both the webdispatcher and portal profiles
Thanks, Pat.

How to load balance serving MP4 files via AMS

Hey gurus,
We have one centralized storage server that stores videos, Lets call this Server A, we have 4 more servers that we want to use to load the files from Server A to load balance and location balance the loading of files.
Servers B-E are on a private VLAN with Server A; so what we're doing now is mounting Server A on to Servers B-E and serving the files via AMS; this has proved to be quite inefficient.
For Live Streams; we use multi-point publishing to achieve this; is there a way to do this with recorded files?
Please advise!
Thanks

Here are few bits of info:
For load balancing for Analytics, that isn't officially supported yet for the UI and Administration components. It might work with sticky sessions from portal-to-analytics but that doesn't get you much. Improving the options there would be a good enhancement request.
For the collector, I think there are two important things to remember. Use broadcast mode. I've never actually seen it in unicast mode, but broadcast definitely works. Also, remember that this is all managed by Portal and Analytics - you don't use your own load balancer between Portal instances and the Analytics Collector instances.
Finally, ALUI Directory is not certified to be load balanced yet. On a separate note, ALUI Directory has a socket leak on Windows due to a bug in the version of Jrockit that ships with it. Upgrading the embedded application server for the ALUI/WCI installation to jrockit-R27.5.0-jdk1.5.0_14 will resolve it.

Final Cut Server Usage Question...

I have just started researching this product and confused a little about it. I am the IT dept at a small advertising agency that does quite bit of video work.
Mostly all of the workstation in the office are PowerMac G5's that clock in at dual 2.2GHz or above with 4GB of RAM
We also have an Xserve G5 (Dual) with 4GB of RAM a 2GB fibre card installed and an apple RAID system as well. The office is all wired with 10/100.
With final cut server - will they be able to actullay edit video over the network on the RAID through the Xserve. Is that what this software is for? Sorry for such a lame question. If not is this basically like Adobe's Bridge application?
Let me know.

Yes it does do basically what your saying, You can leave the source media on the server and just edit from your local machine. You can also download proxies (lower res version of the source media) and edit on a laptop or with a PC without having to move the large source files.
I cant imagine any reason why any company or small business using more than one editing machine wouldn't go for this solution
Does that answer your question?

ODI on RAC- Server usage

For my data migration project, the target is an Oracle database setup with RAC. The ODI agent is installed in the target in one of the servers in the RAC. The target database has been setup in the ODI Topology with the Oracle "scan" name in the JDBC URL (Eg: jdbc:oracle:thin:@xxxxx-scan:1521/yyyyy). Few questions based on this setup-
1) Will all ODI sessions running on the target database share memory across the 2 servers in the RAC (or) will the server on which the ODI agent is installed will only be used by the ODI sessions?
2) If they would be shared, is it possible to restrict ODI sessions to run on just one of the servers. Can this be achieved by modifying the JDBC URL of the target database to include the hostname (instead of scan name) of one of the servers.
3) If there is some documentation clarifying ODI on RAC setup along with answers for above questions, can you please point me to the same?
Version:
ODI: 10g
Oracle: 11g

We have accomplished #2 by configuring the service name being used to be locked to a single node.
Not sure about the others though.

SQL Server Usage Summary page, the count of user/device: does not show for SQL Server 2008

Does MAP tool capture User Summary (count of users, their details) for SQL Server 2008?
At my end, its working for SQL Server 2012 but not showing User Summary for SQL Server 2008..
Does the User Summary only works for SQL Server 2008 Enterprise edition as one of the thread points out?

This is from the
Wiki article:
SQL Server 2008 Enterprise and Datacenter Editions introduced audit event configuration for Windows security logging, which enabled SQL Server 2008 to log logon events to the Windows Security log. The table below shows which versions and editions have the Audit
feature that is needed to record the logon events. MAP cannot obtain user and device access information for any other editions or any older versions of SQL Server.
Datacenter
Enterprise
Business Intelligence
Standard
Workgroup
Web
Express
SQL Server 2008
N/A
Yes
N/A
No
No
No
No
SQL Server 2008 R2
Yes
Yes
N/A
No
No
No
No
SQL Server 2012
N/A
Yes
Yes
Yes
N/A
Yes
Yes
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Two load balanced server sending requests to external system on different protocol

Hi,
I have two loadbalanced OEG servers (server A and server B) with same endpoint configurations in envsetting.props. But when requesting the service, it is creting different URI in both servers. In one of server (server A)it sets URI with following details :
DEBUG   30/Mar/2015:07:29:34.356 [92b0e940]     Set host='abc.tdc.dk'
DEBUG   30/Mar/2015:07:29:34.356 [92b0e940]     Set port='80'
DEBUG   30/Mar/2015:07:29:34.356 [92b0e940]     Set scheme='https'
and fails with following error : ERROR   30/Mar/2015:07:29:34.370 [92b0e940]         [SSL_connect, 0x1220]: error - SSLv2/v3 read server hello A.
However another server (server B),sets URI as :
DEBUG   30/Mar/2015:07:29:34.356 [92b0e940]     Set host='abc.tdc.dk'
DEBUG   30/Mar/2015:07:29:34.356 [92b0e940]     Set port='80'
DEBUG   30/Mar/2015:07:29:34.356 [92b0e940]     Set scheme='http'
and successfully processes the request.
So can you please help here to know even if we are using same endpoints configuration (abc.tdc.dk ) and port (80) on both the servers , then why the URL is set as http on one of server and https on another.
Thanks !!!
Akshay

Hi
Thanks for immediate respose. I tried the ping/acknowledgement example in the biginning itself. It doesn't work. I also tried by changing the agents ( to respective values suitable for my systems) of that example. Then also it failed. The error in that case also same. The message will not propogate from the out going agent.

Load Balance serve issue

Hi,
We have defined 2 servers (server1,server2)in FDM and also added these servers in Machine profile.
We are executing UPSshell.exe which should place .dat file in server1. The server name is also specified as server1 in Upsshell script. But, the issue we are facing is, on first execution, .dat is placed in openbacth of server1,while on second execution .dat is placed in server2. This is causing issue in our dataload. Batch load script is looking for file in server1 and since the file is in server2, datais not getting loaded. Can anyone let me know wht am I missing here , as the .dat file is saved in server2, even after specifying serever as server1 in upsshell.exe script.
Appreciate early response as this is refraining us from proceeding ahead ..Thanks

You need to have a single FDM application folder share point, such as FDMDATA and then your application sub-folders beneath it.
Then your application path should be specified as UNC path (\\ServerNameFDMDATA\AppName)
You can update the path using <Add Application>
A) Choose <Add Application> at the login form
B) Login and highlight the application and choose "modify"
C) Update the application path.

Time Machine on Server / Usage

If I setup TM on a server, and set it to only TM the /User shares (AFP home directories), can I also share out the TM disk and allow the client to "restore" via the TM interface?

I asked my Apple rep what functionality we could use with respect to Time Machine and our users and he said it really is designed for a consumers in a local user environment. There may be ways to hack it to work in a networked environment, but I haven't seen anything on that yet.

Balancing Server Usage

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