Load-balancing between Analytical Provider service nodes in a cluster

Hi All,
- First a little background on my architecture. My EPM environment consist of 3 Solaris servers:
Server1: Foundation Services + APS + EAS + WLS Admin server
Server2: Foundation Services + APS + EAS
Server3: Essbase server + Essbase Studio server
All above services are deployed to a single domain. We have a load-balancer sitting in front of server1 and server2 that redirects request based on availability of the services.
- Consider APS:
We have a APS cluster "AnalyticProviderServices" with members AnalyticProviderServices1 deployed on Server1 and AnalyticProviderServices2 deployed on Server2.
So I connect to APS and login as user1. Say the load-balancer decides to forward my request to server1, so all my request are then managed by APS on Server1. Now if APS on server1 is brought down, then any request to APS on server1 are redirected by weblogic to APS on server2.
Now ideally APS on server2 should say "hey I see APS on server1 is down so I will take up your session where it left off". So I expect the 2nd APS node in the cluster to tale up my session. But this does not happen.. I need to login again when I hit refresh in excel as I get the error "Invalid session.. Please login again". When I open EAS I see I have been logged in with a new session ID. So it seems that the cluster nodes simply act as load-balancers and are not smart enough to take up a failed nodes sessions where it left off.
Is my understanding correct or have I to configure something to allow for this to happen?
Thanks,
Kent

Thanks for your reply John!
I was hoping APS could do something like that .. I am not sure if restoring sessions of a dead APS cluster node on another APS would be helpful but I can think of one situation where a drill-through report is running for a long time on the Essbase server and APS goes down.. it would be good to have the other APS to take up the session and return the drill-through output to the user.

Similar Messages

Load-Balancing between Foreign and two Anchors

Hi, we have two foreign controllers (one active, one standby) and two anchor controllers. All APs are connected to the active foreign controller. The layer 3 networks for the wlan clients on both anchors are different for the same SSID. SSID: Internet, anchor 1: Subnet A, anchor 2: Subnet B. So when a client is getting anchored to Anchor 1, the clients will get an ip from subnet A and when the client is getting anchored to anchor 2, the client will get an ip from subnet B.
This is so far not a big problem because we only have a few accesspoints in some rooms. But what will happen, when we have a full covered wlan and the client roams from one AP to the other AP? Is there a possibility, that the client will anchored to a different anchor while roaming? I think this will result in a lack of connectivity because without a real disconnect the client will not ask for a new IP address.
Other question: Is it possible to disable this load-balancing between anchor controllers? Or can i make a client sticky to only one anchor as long as an access-session is established?
All controllers are 5760 with 3.3.3 software.

Hi acontes,
It's an interesting question.
In this case, if all AP's are on WLC-A and there is no possibility that an L3 inter-subnet roam will occur between WLC-A and WLC-B, I would just forward WLC-A to Anchor A and WLC-B (in the event of fail over) to Anchor B (if Anchors reside on different subnets). If you must specify Anchor A and Anchor B on each WLC for redundancy purposes, it's important to understand the guidelines and limitations with regard to Foreign / Anchor Design.
As Scott mentioned, the limitation with Anchoring design is that there is no primary / secondary configuration for an Anchor on the Foreign WLC.
If WLC-A has two entries (1) for Anchor-A and (2) for Anchor-B, the EoIP tunnels are establish and load-balancing occurs in a round robin fashion.
Keep in mind the following with regard to guest N+1 redundancy:
•A given foreign controller load balances wireless client connections across the list of anchor controllers configured for the guest WLAN. There is currently no method to designate one anchor as primary with one or more secondary anchors.
•Wireless clients that are associated with an anchor WLC that becomes unreachable are re-associated with another anchor defined for the WLAN. When this happens, assuming web authentication is being used, the client is redirected to the web portal authentication page and required to re-submit their credentials.
Since traffic is transported at Layer 2 via EoIP, the first point at which DHCP services can be implemented is either locally on the anchor controller or the controller can relay client DHCP requests to an external server. Since the IP address directly correlates to the DMZ subnet or the interface where the traffic egresses, it is possible for some clients to get IP's from both Subnet A or Subnet B in the event that WLC-A is building EoIP to both anchors.
1) What happens if my clients roam?
Nothing... since all AP's are on WLC-A, it's Intra-Controller Roaming
Each controller supports same-controller client roaming across access points managed by the same controller. This roaming is transparent to the client as the session is sustained, and the client continues using the same DHCP-assigned or client-assigned IP address. The controller provides DHCP functionality with a relay function. Same-controller roaming is supported in single-controller deployments and in multiple-controller deployments.
Would it be better to choose the same DHCP Pool on both anchors?
It's probably better to have redundant anchors on the same subnet, but it's not required.
3) How would you design this :-)
WLC-A <--EoIP--> Anchor A (DHCP Pool A)
WLC-A <--EoIP--> Anchor B (DHCP Pool A)
It's important to remeber what Scott mentioned about the lack of a primary / secondary relationship. If multiple controllers are added as mobility anchors for a particular WLAN on a foreign controller, the foreign controller internally sorts the controller by their IP address. The controller with the lowest IP address is the first anchor. For example, a typical ordered list would be 172.16.7.25, and 172.16.7.28. If the first client associates to the foreign controller's anchored WLAN, the client database entry is sent to the first anchor controller in the list, the second client is sent to the second controller in the list, and so on, until the end of the anchor list is reached. The process is repeated starting with the first anchor controller.
If any of the anchor controller is detected to be down, all the clients anchored to the controller are deauthenticated, and the clients then go through the authentication/anchoring process again in a round-robin manner with the remaining controller in the anchor list. This functionality is also extended to regular mobility clients through mobility failover. This feature enables mobility group members to detect failed members and reroute clients.

How to change time out settings in Analytic Provider Service...

... or how to disable automatic disconnect between APS and essbase server (using XMLA interface).
First a short summary:
We would like to use a third party product to analyze data (DeltaMaster from Bissantz). This product uses the XMLA interface provided by Analytic Provider Service. Mostly the connection works, I can choose one of our cubes, sometimes a drill down is possible, but sometimes the following error occurs:
"Microsoft.AnalysisServices.AdomdClient.AdomdErrorResponseException: (1042006): Network Error [10061] Unable To Connect To [entwgdw.hres.de:33769]. The client timed out waiting to connect to the Essbase Agent using TCP/IP. Check youer network connections. Also please make sure that Server and Port values are correct [...]"
I have already talked to the Bissantz support concerning this issue and the recommended me to increase the APS time out settings and/or to disable the automatic disconnect between APS and essbase server after every query.
The question is: Is this possible and if yes: How and where can I change these settings???
Kind regards
André

You could look at updating the essbase.properties file in the APS installation directory.
olap.server.netRetryCount=600
olap.server.netConnectRetry=3
olap.server.netDelay=200
olap.server.netSocketTimeOut=200
Update then restart APS
Though this might not be the issue if on windows, it may be down to the amount of ports being used, have a read [here |http://timtows-hyperion-blog.blogspot.com/2007/12/essbase-api-error-fix-geeky.html ] for a possible fix.
Cheers
John
http://john-goodwin.blogspot.com/

Load balancing between two routers

I have two routers connected through the LAN connection. The first one is using as routing protocol EIGRP, the other one is part of the managed service and I do not have access to it. I would like to make a load balancing between the two of them by redistributing the static routes in EIGRP. When I tried this, I am loosing the EIGRP entry for this route in the routing table. I would like to have both of them , so we could have traffic sharing. I appreciate if you give me any hints.

Raju,
you have two choices as far as I can see. If you want to use static routing over the WAN to your branch, you could duplicate your static routes to the branch and point them to the secondary router. You will have two identical sets of static routes in the primary router, one set pointing to the WAN interface and the other one pointing to the secondary router.
ip route x.x.x.x "WAN-interface"
ip route x.x.x.x "secondary router"
ip route y.y.y.y "WAN-interface"
ip route y.y.y.y "secondary router"
etc.
As a result the primary router will have two routes to the branch and will load-balance. If one next-hop fails (either the WAN interface or the secondary router), only the other will be used. If the next-hop comes back up, load-balancing will resume.
The other choice would be to use EIGRP over the WAN, and make sure the two routers become EIGRP neighbors. Then you can use the "variance" command to achieve unequal cost load-balancing between the two routers. Let me know if you need more information about this, but i think static routes will be sufficient in your situation.
HTH, Thomas

Load balancing between Instance for same external IP client

Hi,
I have a azure website which is single tenant and is going to be used inside a single Domain from same region.
Now my website provide good performance till 20 concurrent request. I want to scale this so that it can reach up to 30 - 40 -100 so on.
What are the options available to achieve this. till now what i have figured out is that
1. If i increase the web site instance or on the auto scale option. It load balances between the instances on the basis of Client external I.P. but in my case all the users which are using the site shares the same external IP.
I have tested it increasing the instances doesn't make any impact on my performance results.
2. I have also looked in traffic manager but that case is valid when the clients are on different GeoLocations which is also not valid in my case.
So my basic Question is if i have a pool of different scenarios where
100 users uses 1 azure website
200 uses uses 1 azure website
1000 users uses 1 azure website
what infra should i take for each website to support this have performnace same as 100 users.
Whenever you see a reply and if you think is helpful,Vote As Helpful! And whenever you see a reply being an answer to the question of the thread, click Mark As Answer

Hi,
I would request you to configure Web hosting plan and check if it helps in increasing the performance.
It gives a set of features and capacity that you can share across your websites separately.
http://azure.microsoft.com/en-us/documentation/articles/azure-web-sites-web-hosting-plans-in-depth-overview/
Regards,
Azam Khan

Round robin DNS for load balancing between multiple network adapters (Xserve)

I'm attempting to use 'round robin' DNS to load balance between the two ethernet adapters of an Xserve.
Both ethernet adapters are connected to the same LAN and have static IP addresses of 192.168.2.250 and 192.168.2.251.
The DNS zone for the server's local domain/host (macserver.private) has a machine record with both IP addresses (set up in the Lion Server UI).
Having read up on round robin DNS, I would have expected DNS requests for 'macserver.private' to be answered with the two IP addresses ordered at random, achiving my aim of requests being served at random via each ethernet adapter.
However this doesn't seem to be the case. Doing a 'nslookup' from any of the network clients results in the two IP addresses being listed in the same order everytime. And pinging 'macserver.private' only ever results in a response from the same address.
Does anyone know why this is the case? Does Lion Server use a non-standard DNS configuration? Are there any additional settings I need to configure in Lion's DNS server to make adopt a round robin approach to responding to requests?
Thanks in advance for any help!

Be careful what you wish for
Round Robin DNS is rarely the best option for 'load balancing'. At the very least it's subject to caching at various point on the network - even at the client side, once the client looks up the address it will cache that response - this means that subsequent lookups may be served from the client's cache and not refer back to the server. Therfore any given client will always see the same address until the cache expires.
I suspect this is what you're seeing.
You can minimize this by setting a lower TTL on the records. This should result in the response being cached for a shorter period, meaning the client will make more requests to the server, with a higher change of using the 'other' address.
However, you're also going to run into issues with the server having two interfaces/addresses in the same LAN. This isn't recommended.
As Jonathon mentioned, you may be better off just bonding the two interfaces. This will provide an automatic level of dynamic load balancing without the latency of DNS caches, as well as automatic failover should one link fail (as opposed to round robin DNS which will cause 50% of requests to fail until the client cache expires and a new lookup is performed (and, even then, there's still a chance the client will try to use the failed link).

Distributed Queue - Unable To Load Balance Between Each Time A Send Method Is Called

Hi,
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          I noticed the load balancing happens when a JMS client is stopped and
          restarted (meaning totally
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          Any hints and ideas would greatly appreciated.
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          ========================================================================
          <?xml version="1.0" encoding="UTF-8"?>
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          <Cluster ClusterAddress="localhost:8001,localhost:9001"
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Thanks for the Makiey. I am surprise that BEA hasn't come back with any
          info.
          Hien
          On 7 Jul 2004 01:51:01 -0700, makiey <[email protected]> wrote:
          >
          > Hi Hien Luu,
          >
          > We also have a problem with load balancing, tested with WLS 7.0 SP4 and
          > WLS 8.1
          > SP2 (HP UX). The only "working" configuration is load-balancing policy =
          > random
          > (CF deployed to cluster, load balancing enabled, affinity disabled).
          > With the
          > "round-robin" policy we cannot utilize more than 50% dis. queue's
          > members.
          >
          > I'm trying to prepare a reproducer...
          >
          > greetings,
          > makiey
          >
          >
          > "Hien Luu" <[email protected]> wrote:
          >> Hi,
          >>
          >> According to the JMS documentation, I should be able to get the =
          >>
          >> distributed queue to load balance
          >> between each time the message producer calls Message.send(). I was not
          >> =
          >> =
          >>
          >> able to achieve this, however,
          >> I noticed the load balancing happens when a JMS client is stopped and
          >> =
          >>
          >> restarted (meaning totally
          >> exit the JVM and restart the JVM).
          >>
          >> Here is my configuration:
          >>
          >> WLS 8.1 SP2 on XP
          >> One cluster with two nodes (running on the same machine w/ different
          >> por=
          >> t)
          >> Each node hosts one JMS server, which hosts one physical queue and
          >> using=
          >> =
          >>
          >> JDBC store
          >> One distributed queue with two physical members from each of the JMS
          >> =
          >>
          >> server.
          >> JMS Connection Factory is configured with "Load Balancing Enabled" set
          >> t=
          >> o =
          >>
          >> yes,
          >> and "Server Affinity Enabled" to no. This connection factory is target
          >> =
          >> to =
          >>
          >> the cluster.
          >>
          >> The queue session for the queue sender is created with transaction
          >> setti=
          >> ng =
          >>
          >> to false.
          >>
          >> Any hints and ideas would greatly appreciated.
          >>
          >>
          >> Here is the content of config.xml:
          >> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
          >> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
          >> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
          >>
          >> <?xml version=3D"1.0" encoding=3D"UTF-8"?>
          >> <Domain ConfigurationVersion=3D"8.1.0.0" Name=3D"odh">
          >> <Cluster ClusterAddress=3D"localhost:8001,localhost:9001"
          >> MulticastAddress=3D"237.0.0.1" Name=3D"odhCluster_1"/>
          >> <Server ListenAddress=3D"" ListenPort=3D"7001" Machine=3D"localhost=
          >> "
          >> Name=3D"odhAdmin" NativeIOEnabled=3D"true" ServerVersion=3D"8.1=
          >> .2.0">
          >> <SSL Enabled=3D"false" HostnameVerificationIgnored=3D"false"
          >> IdentityAndTrustLocations=3D"KeyStores" Name=3D"odhAdmin"/>=
          >>
          >> </Server>
          >> <Server Cluster=3D"odhCluster_1" ExpectedToRun=3D"false"
          >> IIOPEnabled=3D"false" ListenAddress=3D"" ListenPort=3D"8001"
          >> Machine=3D"localhost" Name=3D"odhManagedServer_1"
          >> NativeIOEnabled=3D"true" ServerVersion=3D"8.1.2.0">
          >> <SSL Enabled=3D"false" IdentityAndTrustLocations=3D"KeyStores"
          >> =
          >> =
          >>
          >> Name=3D"odhManagedServer_1"/>
          >> <ExecuteQueue Name=3D"weblogic.kernel.Default" ThreadCount=3D"1=
          >> 5"/>
          >> </Server>
          >> <Server Cluster=3D"odhCluster_1" ExpectedToRun=3D"false"
          >> IIOPEnabled=3D"false" ListenAddress=3D"" ListenPort=3D"9001"
          >> Machine=3D"localhost" Name=3D"odhManagedServer_2"
          >> NativeIOEnabled=3D"true" ServerVersion=3D"8.1.2.0">
          >> <SSL Enabled=3D"false" IdentityAndTrustLocations=3D"KeyStores"
          >> =
          >> =
          >>
          >> Name=3D"odhManagedServer_2"/>
          >> <ExecuteQueue Name=3D"weblogic.kernel.Default" ThreadCount=3D"1=
          >> 5"/>
          >> </Server>
          >> <MigratableTarget Cluster=3D"odhCluster_1"
          >> Name=3D"odhManagedServer_1 (migratable)"
          >> Notes=3D"This is a system generated default migratable target
          >> f=
          >> or a =
          >>
          >> server. Do not delete manually."
          >> UserPreferredServer=3D"odhManagedServer_1"/>
          >> <MigratableTarget Cluster=3D"odhCluster_1"
          >> Name=3D"odhManagedServer_2 (migratable)"
          >> Notes=3D"This is a system generated default migratable target
          >> f=
          >> or a =
          >>
          >> server. Do not delete manually."
          >> UserPreferredServer=3D"odhManagedServer_2"/>
          >> <Machine Name=3D"localhost">
          >> <NodeManager ListenAddress=3D"localhost" Name=3D"localhost"/>
          >> </Machine>
          >> <JMSConnectionFactory AcknowledgePolicy=3D"All"
          >> DefaultDeliveryMode=3D"Persistent"
          >> JNDIName=3D"com.neoforma.ConnectionFactory"
          >> Name=3D"odhConnectionFactory" ServerAffinityEnabled=3D"false"
          >> Targets=3D"odhCluster_1" XAConnectionFactoryEnabled=3D"true"/>
          >> <JMSDistributedQueue JNDIName=3D"com.neoforma.odhDistributedQueue_1=
          >> "
          >> LoadBalancingPolicy=3D"Round-Robin" Name=3D"odhDistributedQueue=
          >> _1" =
          >>
          >> Targets=3D"odhCluster_1">
          >> <JMSDistributedQueueMember JMSQueue=3D"odhQueue_1" =
          >>
          >> Name=3D"DistributedQueueMember_1"/>
          >> <JMSDistributedQueueMember JMSQueue=3D"odhQueue_2" =
          >>
          >> Name=3D"DistributedQueueMember_2"/>
          >> </JMSDistributedQueue>
          >> <JMSJDBCStore ConnectionPool=3D"odhMessagePool"
          >> Name=3D"odhJMSJDBCStore_1" PrefixName=3D"Order1_"/>
          >> <JMSJDBCStore ConnectionPool=3D"odhMessagePool"
          >> Name=3D"odhJMSJDBCStore_2" PrefixName=3D"Order2_"/>
          >> <JMSServer Name=3D"odhJMSServer_1" Store=3D"odhJMSJDBCStore_1"
          >> =
          >>
          >> Targets=3D"odhManagedServer_1">
          >> <JMSQueue CreationTime=3D"1076439896999"
          >> JNDIName=3D"com.neoforma.odhQueue_1" Name=3D"odhQueue_1"
          >> =
          >>
          >> StoreEnabled=3D"true"/>
          >> </JMSServer>
          >> <JMSServer Name=3D"odhJMSServer_2" Store=3D"odhJMSJDBCStore_2"
          >> =
          >>
          >> Targets=3D"odhManagedServer_2">
          >> <JMSQueue CreationTime=3D"1076439664343"
          >> JNDIName=3D"com.neoforma.odhQueue_2" Name=3D"odhQueue_2"
          >> =
          >>
          >> StoreEnabled=3D"true"/>
          >> </JMSServer>
          >> <JDBCConnectionPool
          >> DriverName=3D"oracle.jdbc.xa.client.OracleXADataSource"
          >> Name=3D"odhConnectionPool" Password=3D"...."
          >> Properties=3D"user=3D..." Targets=3D"odhCluster_1"
          >> TestTableName=3D"SQL SELECT 1 FROM DUAL" URL=3D"...............=
          >> .."/>
          >> <JDBCConnectionPool DriverName=3D"oracle.jdbc.driver.OracleDriver"
          >> Name=3D"odhMessagePool" Password=3D"....."
          >> Properties=3D"user=3D....." Targets=3D"odhCluster_1"
          >> TestTableName=3D"SQL SELECT 1 FROM DUAL" URL=3D"............."/=
          >>>
          >> <JDBCMultiPool AlgorithmType=3D"High-Availability"
          >> Name=3D"odhJDBCMultiPool_1"
          >> PoolList=3D"odhConnectionPool,odhMessagePool" =
          >>
          >> Targets=3D"odhCluster_1"/>
          >> <JDBCTxDataSource EnableTwoPhaseCommit=3D"false"
          >> JNDIName=3D"com.neoforma.order.orderDS" Name=3D"odhJDBCDataSour=
          >> ce_1"
          >> PoolName=3D"odhConnectionPool" Targets=3D"odhCluster_1"/>
          >> <Security Name=3D"odh" PasswordPolicy=3D"wl_default_password_policy=
          >> "
          >> Realm=3D"wl_default_realm" RealmSetup=3D"true"/>
          >> 
          >> <Realm FileRealm=3D"wl_default_file_realm" Name=3D"wl_default_realm=
          >> "/>
          >> <FileRealm Name=3D"wl_default_file_realm"/>
          >> <PasswordPolicy Name=3D"wl_default_password_policy"/>
          >> <Application Deployed=3D"true" Name=3D"odh.ear"
          >> Path=3D"D:\bea\user_projects\domains\odh\applications\odh.ear"
          >> StagedTargets=3D"odhManagedServer_1,odhManagedServer_2"
          >> StagingMode=3D"stage" TwoPhase=3D"true">
          >> <EJBComponent Name=3D"odh.jar" Targets=3D"odhCluster_1" URI=3D"=
          >> odh.jar"/>
          >> </Application>
          >> <StartupClass ClassName=3D"com.neoforma.startup.JMXMBeanStartup"
          >> DeploymentOrder=3D"1" Name=3D"ODH MBean Startup Class"
          >> Notes=3D"ODH MBean Startup Class - Note" Targets=3D"odhAdmin"/>=
          >>
          >> <EmbeddedLDAP
          >> Credential=3D"{3DES}YFY55/dsdxI9HL/AKGRXHuR1VwyJewNFdAHdrtk/WMM=
          >> =3D" =
          >>
          >> Name=3D"odh"/>
          >> <SecurityConfiguration
          >> Credential=3D"{3DES}ZCPa1Bsrj3z2DhVKVUbq32zTYipDVff+LDB9+1b2Dr4=
          >> VLhz5yjZyHgPheqS/kum4VVZamDYN07Hyb6rALiCTHhwt1EzK5+M+"
          >> Name=3D"odh" RealmBootStrapVersion=3D"1"/>
          >> </Domain>
          >
          Using Opera's revolutionary e-mail client: http://www.opera.com/m2/

Load balancing between two interfaces on 2811

Hi,
We have a 2811 router with VPN and NAT configured. We have two internet connection from different ISPs. The speed of our original connection is 2MB up and down. The speed of our new connection is 1MB up and down. We want to configure load balancing between the two connections. Our new ISP has provided us with a CISCO 837 router. We want to connect that router into our 2811 on one of the free WIC card and then configure load balancing between the two interfaces on our 2811. The third interface has a local address configured. Please suggest where to start. I tried searching on net for any configuration example but I was unable to find any particular example with commands. I am new on CISCO platform. Any help will be hugely appreciated. Thanks in advance.

Raju,
you have two choices as far as I can see. If you want to use static routing over the WAN to your branch, you could duplicate your static routes to the branch and point them to the secondary router. You will have two identical sets of static routes in the primary router, one set pointing to the WAN interface and the other one pointing to the secondary router.
ip route x.x.x.x "WAN-interface"
ip route x.x.x.x "secondary router"
ip route y.y.y.y "WAN-interface"
ip route y.y.y.y "secondary router"
etc.
As a result the primary router will have two routes to the branch and will load-balance. If one next-hop fails (either the WAN interface or the secondary router), only the other will be used. If the next-hop comes back up, load-balancing will resume.
The other choice would be to use EIGRP over the WAN, and make sure the two routers become EIGRP neighbors. Then you can use the "variance" command to achieve unequal cost load-balancing between the two routers. Let me know if you need more information about this, but i think static routes will be sufficient in your situation.
HTH, Thomas

Load balancing between application server and database

Hi,
is there any load balancing between the application server and the database? Consider we have a single instance of an application server that sends database queries from different clients to the database. Are the requests queued in some way at the application server, allowing to control the flow of the queries (e.g. queries from "more important" clients might be sent with a higher priority)?
Thanks for your help!

Hi Victor/Jim/Volker,
Thanks a lot for all the responses..
Just wanted to let you guys know that my installation finished successfully.
The thing which confused me was that my Qtime, Qdate and everything else was showing correct values..
Well, my problem I set the environmental variable PASE_TZ to the EST time zone on a SYS level using WRKENVVAR>F4>SYS and added the variable. I logged off and the sidofr logged off, but one user which should have logged off and didn't was the "SAPINST"(my installation user) which was logged in the subsystem TMKSVR00.
Even when I had closed the SAPINST installlation program, the user doesn't log off...it just sits there until and unless u shut him out of the system using the option 4 on wrkactjob for ending the JOB(SAPINST logged in the system below the TMKSVR00 subsystem)
So since the SAPISNT user never logged of, his environmental variables were not initilized properly, even after the changes...
This thought came to me almost after a 6 hours of wasting my time searching for notes here and there...
I think when u end/stop the install in SAPINST, the SAPINST user should log off the AS400 system, but I have noticed, it never does...although when u restart the installation, if u have noticed it shows you the log on for the SAPINST user in the TMKSVR screen...
Its kind of buggy, I would say...
I have noticed, that even when I log on to AS400 from home or from a remote PC using Emulator, it shows me logged in the subsystem and even after i have logged of, it still shows me there...
Anyway, thanks a lot guys...for all your responses..
Just wanted to let you know all.
Thanks
Abhi

Question about load balancing between Portal and ABAP

Hi,
I have the problem whit load balancing between Portal and ECC (ERC) ABAP
Exist two system:
1) ECC (ERP) ABAP = Backend Module = HR
2) EP (JAVA) = Frontend
The users (9000 users) logon in the EP and run query (data personal) in the ECC. The problem to all user connect in Central Instance and not in the Dialog Instance.
How can balancing the conecction HTTP (EP) to ECC (ABAP)??
I need balancing in the ECC to Dialog Instance

Jco -> right. Another possibility is that you use iviews that point to the backend in this case you will need to use a load balanced entry for the backend system in the [system landscape|http://help.sap.com/saphelp_nw70ehp1/helpdata/en/47/8c1e438d7017fce10000000a42189c/frameset.htm] -> SAP_R3_LoadBalancing
If you have ESS deployed on your portal, you will most probably need to do both.
Cheers Michael

Is there auto load balance between 2 active webi services?

Hi ,
I have not seen any kind documentation from SAP whether BOBJ can auto load balance requests in round robin fashion between 2 or more webi services.
The only theory or belief that i see & hear is that upon reaching the max connection threshold of one webi service, bobj will start diverting the next requests to second webi service.
So now i am looking for some kind of clarification on whether auto load balance happens between multiple webi services in round robin fashion or not.
Please share if any one has idea about this.
Thanks,
Srikar

Thanks to everyone who tried to respond to my question.
But i just got below response from SAP:
=====================================================
I would like to inform you that CMS distributes the load (jobs) to
servers according to the server availability (maximum jobs allocated
to individual server). This is a generally how load is balanced
between CMS and various job servers and processing servers.
=====================================================
Now i am more confused. I personally did some little testing by creating 2 webi services and tried to view multiple webi reports. What i observed is it does pick up different webi services only while at the start of report viewing. But once it picks up perticualr webi service, that same user session is sticking to previously picked up webi service and always goes to the same process for processing.
But now SAP response is bit more confusing.
Thanks,
Srikar

Load Balance Between Diff DB's or Instances??

Hello All,
Based on the below TNS entry, my understanding is that since it has multiple listener addresses by default connect time failover is configured and as description says load balancing option is also enabled.
But how would i know whether fail over & load balancing is happening to the same instance of database or altogether to a different database??.... I did nslookup on the server names though IP addresses are different it's still not clear for me....
How different are the Oracle instance & Oracle DB??
Could you please shed some light for me to cross check, Thank you.
BDCD =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = xxx-vip.abc.com)(PORT = 1557))
    (ADDRESS = (PROTOCOL = TCP)(HOST = yyy-vip.abc.com)(PORT = 1557))
    (LOAD_BALANCE = yes)
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = BDCD)
)

Ariean wrote:
1.) Thanks for your reply, so load balancing and/or fail over will only happen between different instances of the single database or can it also be possible between 2 different databases provided the databases are in sync??
Yes, it can be done between two databases as well and this is called Standby database configuration. This won't do the load balancing for you but you would get teh switchover (or Failover) between two.
2.) Would it be possible to have PROD & DR database servers with load/fail over options configured and also with dataguard setup between those 2 DB's will have same IP addresses & host names like below?
PROD      DataBase Server     tsjipud186.xyz.mq.abcd.net     123.45.67.30
                     tsjipud187.xyz.mq.abcd.net     123.45.67.55
DR     DataBase Server          tsjipud186.xyz.mq.abcd.net     123.45.67.30
                    tsjipud187.xyz.mq.abcd.net     123.45.67.55
Hmm may be I need a cup of coffee because not able to parse the question.
Aman....

Load balancing &scalability when OSB service is deployed in a single server

Hi
We have a file write service which we are deploying to clustered domain with a single admin and managed server.
This we are doing since there can be issue of file locking if it is deployed cluster with multiple managed server and when more than one instance has to write to a same file (writing to the same file is the requirement).
What are our options of load balancing and scalability and fail over?
As i understand scalability in this case is limited to increasing the capacity of the hardware. There is no load balancing.
For fail over, we can go for a backup domain is PASSIVE mode.
Can someone please suggest any other options?
Thanks
kedar

Hi,
One SSA is ok, but you should think about access rights. If the access is clear cut between all the web apps you should be ok with one SSA. Multiple result sources limiting on content source also works, but could easily be bypassed.
Multiple SSA's will eat up RAM/CPU like a mother :)
As for popular etc.. it could be due to how those sources are set up, but haven't investigated or tested this much.
Thanks,
Mikael
Search Enthusiast - SharePoint MVP/MCT/MCPD - If you find an answer useful, please up-vote it.
http://techmikael.blogspot.com/
Author of Working with FAST Search Server 2010 for SharePoint

Load balancing the R12 two application node

Hi,
We are having 2 Application node(running all the services) with all the services running,
I wanted to any option is there to load balancing the Two application nodes without having Hardware or DNS load balancing.
Regards
Vasu

Vasu,
You can configure Oracle Web Cache as a Load Balancer.
Note: 380486.1 - Installing and Configuring Web Cache 10g and Oracle E-Business Suite 12
https://metalink2.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=380486.1
WebCache 10g (10.1.2.2) Certified with Apps 11i and 12
http://blogs.oracle.com/stevenChan/2007/08/webcache_10g_10122_certified_w.html
Regards,
Hussein

Load Balance Forms and Reports Services

Is it possible to Load Balance an application (written in Developer 9i) between
two computers running Oracle Application Server 10g (9.0.4) Forms and Reports Services ?
If it is possible, can anybody give an example or some kind of documentation, because
the product documentation is not clear.
Thanks in advance...

Yes it is possible, but it all depends on what is your definition of load balancing?? Do you mean hardware machine balancing or service availability??? this is a large territory and you have to be specific, you even have the RAC.
Oracle has [Oracle Application Server High Availability |http://download.oracle.com/docs/cd/B14099_19/core.1012/b14003/toc.htm] and metalink Note:740202.1 explains in detail how to configure it.
Tony

Load-balancing between Analytical Provider service nodes in a cluster

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