Load balance setting in AE

Hi:
The XI prd has 2 servers with load balance via web dispatch.But in the engine status of component monitor,i find there is no messages in one of the server nodes at the tab "message overview"!
I did a test of sending about 3000 records from ECC(ABAP PROXY) to DB(JDBC) through XI.During its processing,both of the 2 server works well in SM51,so i think the IE works well with load balance!
But all of the records are processed by one server node in engine status,what can i do for the AE?
I did another test of sending data from third party sys(SOAP) to ECC(ABAP PROXY) through XI.The sender pushed data through port 8080.Both the IE and AE works well with load balance.
regards
Yu Ming

Hi Ming,
you can check the IE load balancing in SM51 but not the AE load balancing. AE load balancing you can check in RWB. check the below
1) check in SXI_cache what the adapter engine URL is maintained in both application server(IE).
2)check the connectivty test between the web dispatcher to AE( in which message not visivle).
3) ChecK the configuration between sap web dispatcher to AE.
4) check the configuration and URL maintained in SLD
Regards,
Sushama

Similar Messages

How to control a Load Balanced set in IaaS VMs using Text files

Hi,
I would like to control the Load Balanced nodes Using a resource to probe like active.txt in IIS than a Endpoint on the Management Portal.
The reason i need this is because the engineers in my team will have access to VMs but not to Management servers.
Any info on it is very helpful.
Thanks

Hi,
You can Control the access to the Load Balanced Set by using Network ACL. A Network Access Control List (ACL) is a security enhancement available for your Azure deployment. An ACL provides the ability to selectively permit or deny traffic for a virtual machine
endpoint. This packet filtering capability provides an additional layer of security.
Using Network ACLs, you can do the following:
Selectively permit or deny incoming traffic based on remote subnet IPv4 address range to a virtual machine input endpoint.
Blacklist IP addresses
Create multiple rules per virtual machine endpoint
Specify up to 50 ACL rules per virtual machine endpoint
Use rule ordering to ensure the correct set of rules are applied on a given virtual machine endpoint (lowest to highest)
Specify an ACL for a specific remote subnet IPv4 address.
Network ACLs can be specified on a Load balanced set (LB Set) endpoint. If an ACL is specified for a LB Set, the Network ACL is applied to all Virtual Machines in that LB Set. For example, if a LB Set is created with “Port 80” and the LB Set contains 3 VMs,
the Network ACL created on endpoint “Port 80” of one VM will automatically apply to the other VMs.
Hope this helps !
Regards,
Sowmya

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

Azure Cloud Service Scaling - do I have to configure a Load Balancer?

I'm a little bit confused by how scaling in Azure works. I'm using a Cloud Service and have 2 web roles running a PHP application. I can RDP on both machines and both applications run great on each machine. Also I don't have any problems calling the staging
URL.
But I can't figure out if I configure scaling so that 2 machines run always, if I have to configure a load balancer somehow. Or is this already done for me?
In Azure VM's I had to create a load-balanced set endpoint for an endpoint, but what about cloud services?
And how is this done in the XML configuration file for my service? What if I don't do it?

Hi,
Scaling is affected by core usage. Larger role instances or Virtual Machines use more cores. You can only scale an application within the limit of cores for your subscription. For example, if your subscription has a limit of twenty cores
and you run an application with two medium sized Virtual Machines (a total of four cores), you can only scale up other cloud service deployments in your subscription by sixteen cores. All Virtual Machines in an availability set that are used in scaling an
application must be the same size.
Windows Azure supports load balance for cloud services and standard websites, we just need to set instance count to more than 1 to enable load balance. For virtual machines, it needs to set up manually.
Please refer this link for Load Balance a Virtual Machine:
http://www.windowsazure.com/en-us/manage/windows/common-tasks/how-to-load-balance-virtual-machines/
for more information.
Auto scale lets you set scaling limits and scheduling goals to ensure you are always getting optimal performance
Please refer this link for Scaling on Cloud Services:
http://azure.microsoft.com/en-us/services/cloud-services/
Also, Please refer this link for Scaling an Application :
http://azure.microsoft.com/en-us/documentation/articles/cloud-services-how-to-scale/
XML configuration : Azure (Load-balanced) Endpoints can only be used for TCP/UDP based services. please check
https://techlib.barracuda.com/display/BNGv54/How+to+Configure+a+High+Availability+Cluster+in+Azure/printable for the detailed information
Hope this helps.
Regards,
Shirisha Paderu.

App.server load balancing for SAP System with 1 PS

Hi,
In SAP CPS 7.0 (Build M26.12) I have a SAP system with Central Instance + 10 App.servers, but all instances are managed by 1 ProcessServer.
After activating the "App.server load balancing" setting in SAP system definition the application servers are becoming visible in CPS with their load factors (number of BGD wp's on app.servers) and load numbers (number of active jobs on app.servers).
This is so far fine, but the additional functionality is not working as I would expect, I have issues with 2 functionalities:
1. Based on documentation after activating also the XAL connection the CPS should submit the job on app.server with best performance based on XAL monitoring data filling the TARGET_SERVER parameter.
This functionality is not working for me at all
2. A useful functionality after activating the "App.server load balancing" setting is that the ProcessServer is going to "Overloaded" status when all BGD wp's of SAP system are occupied, thus restricting submitting new jobs during overload situation. But I had an issue also with this functionality, after SAP system recovery from overload situation, the CPS still remained in Overload status (so no new jobs were submitted).
As a workaround I had increased the treshold values for loads on all app.servers for this SAP system, what was fine for several days, but after a while I believe this was a reason of unexpected performance issues in CPS, therefore I have deactivated the 'App.server load balancing" setting at all for this ProcessServer.
I would appreciate your feedbacks with this functionality.
Thanks and Regards,
Ernest Liczki

Hi Preetish,
This connect string option is to loadbalance RFC connections. These are balanced upon login, once you are connected to a particular application server (AS) you stay on that server until you reconnect.
Since CPS uses multiple RFC connections, this will result in the connections being distributed over the available AS resources which is fine as long as they are generally evenly loaded. If you have certain AS hosts that are continuosly more loaded than the rest, then you probably don't want the CPS RFC connections to end up on these servers.
The original question is about loadbalancing of batch jobs over the available AS resources, and this is done independent of the RFC connection load balancing. Even if all CPS RFC connections are pinned to the DB/CI host, you can still loadbalance jobs over the available SAP AS hosts, either by using SAPs builtin balancing, or the CPS algorithm by activating the checkbox as indicated in the first entry in this thread.
Finally, to reply to Ernest's question: I believe there are some fixes on the app load balancing in the latest release, M26.17 should be available on the SWDC now.
Regards,
Anton.
Edited by: Anton Goselink on May 29, 2009 9:06 PM

Configuring RFC connections for load balancing.

Hi ,
We have the following landscape for our systems.
The database is installed on z/os , db2 (mainframe). The central services( SCS and ASCS) are also on the mainframe. So the message server is on mainframe.
The CI is on AIX and The DI is on AIX.
We have Logon groups configured and load balancing Configured and is RFC enabled.
1) When we connect to SAP using the SAPGUI and the portal connection is made to either CI or DI depending upon the best response times. Now recently we are running the mercury load testing, all the users are connecting to DI. Why are the users connecting to DI even though we have load balancing?
2) I have a system with SID BP0, with one CI and one DI. The logon group is BP0 and the message server name is cyrix. Now I have other another system EP0. I have created a RFC connection from EP0 to BP0. In SM59 I have selected the load balancing option, and provide the message server name, SID and logon group name. The connection does not work. If I connect directly to the CI or DI the connection works. Please tell me how can I configure load balancing for RFC connections.
Thanks
Manmath.

Dear 917996,
There are two types of load balancing:
- Client-side load balancing (setting up the tnsnames.ora on client side). More information here (http://ggsig.blogspot.co.uk/2012/04/client-side-
load-balancing-in-oracle.html). Very good video produced my friend Igor Melnikov is here (http://www.dsvolk.ru/oracle/racdd4d/demos/video/loadbalance/client/clientloadbalance_viewlet_swf.html)
-Server-side load balancing (remote_listener and setting service parameter clb_goal). Very good Igor Melnikov's video is here (http://www.dsvolk.ru/oracle/racdd4d/demos/video/loadbalance/server/serverloadbalance_viewlet_swf.html).
I have read about client side and server side load balancing. By editing tnsnames.ora I have enabled client side load balancing which is suppose to select listeners at random. then why does it only go to second node?Could you please show your tnsnames.ora on client?
Please can anyone help me to configure server side load balancing with SCAN. I have read many many post but couldn't find a clear answer.Based on your output (remote_listener string cmbtrnrac-scan:1521) you have already configured the server side load balancing.
SQL> show parameter listener
NAME TYPE VALUE
listener_networks string
local_listener string (DESCRIPTION=(ADDRESS_LIST=(AD
DRESS=(PROTOCOL=TCP)(HOST=10.1
7.67.214)(PORT=1521))))
remote_listener string cmbtrnrac-scan:1521How many SCANs do you use? Do you use DNS?
regards,
Gennady

Printer Pool load balancing problem.

We seem to be having a problem with printer load balancing working correctly. I have several computer labs. Each lab has at least 2 printers of the same type. As a result I pool the printers for each lab. We are still running ZCM10.3.4. Most of the clients are running iprint 5.82. With Zenworks 7 and 6.5 load balancing on these printers worked very well and page counts stayed very close on each printer. Now that we are at ZCM10 and have been for about 3 years now we continually see that one printer gets the majority of jobs. Most of the computers are imaged but printers are installed after imaging. Even if we alternate the default printer on the computer print jobs still mostly come out the same printer. All printers except 3 are HP and in our case they are all new HP M602's with a couple older HP4015DN's thrown in when the new HP M602's would print garbage across the wan and the 4015's would print correctly but that is another topic.
Am I misunderstanding how load balancing is supposed to work? Isn't load balancing supposed to be one of the features of printer pooling in addition to sending jobs to the printer that is not busy at the time the job is sent? How is load balancing set up?
Thank you.

are you using any front end web server or hardware load balancer ? verify your load balancing if it's happening or not properly between your clustered managed servers.
Regards
Mukesh Negi
http://weblogicserveradministration.blogspot.com/

RX load balancing on SG200-18

Hi guys,
I put this question on Spiceworks and someone chimed in and said it wasn't possible due to the nature of how etherchanel balances, but I wanted to double check. Here is my question:
I have a cisco SG200-18 managed switch configured with LAG with LACP and a new Supermicro X9SCM-F motherboard that uses two Intel NICs (82579LM & 82574L). The server is running Server 2012 r2 standard and I'm teaming the NICs via intel's driver. The team type is set to IEEE 802.3ad Dynamic Link Aggregation. From my understand that means that inbound and outbound packets should be able to utilize the increased bandwidth (thus the dynamic part). So far in my testing coping files to and from the server from multiple PCs at the same time only files being copied from the server utilize the increased bandwidth. I can see in task manager on the server that the ethernet is using over 1 Gbps. However, files going TO the server from multiple computers at the same time max out at 1Gbps.
Any insight on why this would be?
Edit: Also want to note that the switch is running the most recent version of the firmware.
Attached you'll find some screen setups of the different windows on the server & the switch. Thanks!

Hello,
This is a common question with LACP and LAGs in general.
It all comes down to this. Any single connection will only ever be able to use a single member of the LAG. Meaning that whatever the maximum speed (1Gbps) of one physical link is, that is the limit of the transfer.
It is because of how the load balancing algorithm works. When a packet comes in, the switch hashes either the IP or MAC address of the source and destination, and comes up with a number. If your LAG has 4 links, it is a number from 1-4. That determines which link in the LAG gets used in that connection. That connection will only ever use that LAG member, and cannot spill over, even if the link it is using gets full.
The load balancing algorithm can be changed to better utilize the links, however the test of a single computer transferring to another computer will always give the results you saw.
There are several enterprise level Cisco switches which can load balance based on source and destination port number, which could enable two computers to utilize multiple links, if they were transferring data on different TCP ports. However the small business switches are only able to load balance by MAC/IP. You can experiment with the load balancing setting to see which setting optimizes your link usage. You may also be able to tweak this setting on the server side, but that one is up to you.
Hope that helps a bit, you've done some nice testing already, so I'm really just confirming what you've already seen.
Thank you for choosing Cisco,
Christopher Ebert
Network Support Engineer - Cisco Small Business Support Center

Load balancing with multi datasource

Hi,
I have created two data sources and created a multi data source with those with "Load-Balancing" set as algorithm.
I have two kinds of urls where I can use those links to test the load balancing
1. survey page which will take only 2 sec to submit
2. registration page which will take more than 10 sec to submit.
My problem here is everything is fine with survey page and also sequence is in order in the database but with the registration page, all data is getting inserted through the first data source.
Thanks,

Did you check the test connections in reserve option and also failover when busy option for the datasources and multi datasource?

What is the concept of load-balancing

Hi All,
can any one explain me the concept of load-balancing
Thanks.

In simple words, when one server within a load-balancing setting (where more servers are able to run the same process) has too many requests to process, it will off-load a number of those requests to other servers in the same setting. This will be done in a way that it will be transparent to the final user, meaning that the user who has made the request does not know or perceive which server has processed his request.

Azure Load Balancer - Query for VMs in rotation or removed from rotationq

From what I can tell, there is no way to know if any of the VMs configured as part of a Load-Balanced Set has been taken out of rotation. I see a PS script to set the Azure Load Balancer Endpoint -
Set-AzureLoadBalancedEndpoint. But there is no way from what I can tell via
PS or in the Portal to notify or alert me when a VM is no longer part of the LB Set due to some issue. What is the roadmap to make this available via a PS Script, Azure Portal, or via SCOM?

Hi,
From my experience, this issue was more related with Windows Azure network, I suggest you move to that forum for a better help.
The forum link was:
http://social.msdn.microsoft.com/Forums/en-US/home?forum=WAVirtualMachinesVirtualNetwork
Best Regards
We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
Click
HERE to participate the survey.

Does Traffic Manager provide database load balancing for MySQL?

I need two VMs to implement MySQL Cluster in Windows Azure. VMs allow configure endpoint load balance set for Mysql, but I did not find tcp protocol in Traffic Manager. Does it provide this service for database
load balancing?

Hi,
Traffic Manager works on the DNS level and routes traffic between public endpoints that sit behind a common DNS name. So you can't use this for your scenario.
However, You can implement
load balancing for VMs in another way.
Edward

Error using load balancer in ebusiness suite R12

Hi
Has any one used Cisco 11503 load balancer in their ebusiness implementation
we have upgraded a customer instance from 11i10cu2 to 12.0.6. we have configured the R12 instance for load balancer as per metalink note 380489.1
when we access the ebusiness suite, we hit the issue as mentioned below:
You cannot complete this task because one of the following events caused a loss of page data. Possible Causes:
You have left your login session idle past the timeout period. A system failure has occurred. The application server is incorrectly configured and does not send a session cookie to the client browser. If you were testing in JDeveloper: JDeveloper OC4J process did not fully shut down before restarting the application. You closed one of the Internet Explorer browser windows while the request is being processed in another Internet Explorer window. Closing an Internet Explorer window causes OC4J to expire a user session. OC4J XML files in your JDeveloper user home system directory have been modified or corrupted.
as per many metalink notes, this may occur due to load balancer ..example note : 755825.1
we have then removed load balancer setting from the applications context file (xml file) and issue doesnt occur.
so issue seems to be with load balancer setting, however we couldnt find any doc which mentions setting for Cisco 11503 load balancer
we saw notes for Bigip and cisco ACE load balancer in metalink 601694.1
Customer is also unable to help here .. as to what setting needs to be changed
Can someone kindly advise

Have you opened a case with Cisco to see if they can help ? Has persistence been enabled on the load balancer ? Is there some kind of timeout enabled on the balancer ? I do not know much about load balancers, but the settings should be somewhat similar across all of them. See if these docs help
601694.1 - How To Check Session Persistence On BigIP F5 And Cisco Ace Load Balancer Appliances
390173.1 - How to prevent Self-Service session expiry when Using Radware's APSolute Insite Software Loadbalancing Software
HTH
Srini

Traffic Manager versus Azure Load Balancer

Hi All,
We have an MVC5 app which we are planning to host either as an Azure Web App or Azure Web Role. The queries that we have is pertaining to load balancing of the same as follows:
1. When we spawn multiple instances of Web Apps or WebRoles, does Azure Load Balancer automatically kick in?
2. If the above case is true, then when is the need for the Traffic Manager? Is it used when instances are spanning across multiple regions?
3. Will Azure load balancer suffice my requirement if I am hosting my app only in a single region?
Regards, Saurabh

Hi Saurabh,
No, you would have to manually configure an Azure Load Balanced Set for Load Balancing purposes. You could refer this link for details on how to configure a Load Balanced Set:
https://msdn.microsoft.com/library/azure/dn655055.aspx
Yes, Traffic Manager allows you to control distribution of traffic to Cloud Services, Websites across different Data Centres.
If you are hosting your app within a Cloud Service, Azure Load Balancer should suffice for your requirement.
You could refer the following link for details on various load balancing methods for Azure Infrastructure Services:
http://azure.microsoft.com/en-in/documentation/articles/virtual-machines-load-balance/
Regards,
Malar.

Help! Azure Cloud Services and Virtual Machine Web Servers Load Balancing

I have a cloud service. I have two virtual machines setup as web servers each with IIS installed. I have configured my domain registrar to point my domain name to the cloud service IP address. I also went into the endpoints of each virtual machine and verified
that I have http port 80 setup on both in a load balanced set.
I am unable to access websites on either server at this point. DNS propogation site shows "error: token mismatch"...this has been setup since yesterday and still error.
Can anyone assist me in where I went wrong? Am I confused to how the cloud service should work? I am assuming it will allow me to load balance the two virtual machines in the way I have configured above. Please help!!!!

Hi,
Thank you for posting in here.
We are checking on this issue and will get back at earliest.
Regards,
Manu Rekhar

Load balance setting in AE

Similar Messages

Maybe you are looking for