Load Balancing issue on RAC setup

1. We have a Oracle RAC cluster having two node say node1-vip and node2-vip
2. We have two client software (both uses weblogic as app server) say ANP and HDM
3. We configure connect string for HDM by giving node1-vip as primary and node2-vip as secondary. Here is the connect string we provide
jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=node1-vip)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)(HOST=node2-vip)(PORT=1521))(FAILOVER=on)(LOAD_BALANCE=off))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME= anpdb)))
4. We configure connect string for ANP by giving node2-vip as primary and node1-vip as secondary. Here is the connect string we provide
jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=node2-vip)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)(HOST=node1-vip)(PORT=1521))(FAILOVER=on)(LOAD_BALANCE=off))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME= anpdb)))
We are observing that connection for HDM is only going to node1-vip however connection for ANP sometime goes to only node2-vip however sometime it is getting distributed between node1-vip and node2-vip. Whenever there is more connection on node1-vip than node2-vip then connection for ANP is only going to node2-vip however whenever number of connection at node2-vip is equal or greater than node-1 vip, connection for ANP gets distributed between node1-vip and node2-vip
Thanks
Sumit

Hi,
jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=node1-vip)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)(HOST=node2-vip)(PORT=1521))(FAILOVER=on)(LOAD_BALANCE=off))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME= anpdb)))
Why have you put *(LOAD_BALANCE=off)* ?
And from your post, you are not trying to use actual load balancing.
You are trying to give connectivity like this HDM->node 1 and ANM->node 2
In that case you need tp specify only one server vip address.
When you configure the connection entries like above, when a new user session connection is requested, listener will connect the user to whichever address is reachable at that time.
Hope you got my point...
Regards,
Mahesh.

Similar Messages

Functional load balancing in oracle RAC

Hi all,
Could anyone suggest how to setup functional load balancing in oracle RAC? Will there be any performance improvement in doing so? I implemented server side load balancing and the performance of INSERT, UPDATE and DELETE are very poor. Will functional load balancing be of any use? Please tell me the steps of how to implement functional load balancing?
Regards,
Aravind
Edited by: Aravind K R on Jul 12, 2011 2:49 PM

Aravind K R wrote:
Hi all,
Could anyone sujjest how to setup functional load balancing in oracle RAC? Will there be any performance improvement in doing so? I implemented server side load balancing and the performance of INSERT, UPDATE and DELETE are very poor. Will functional load balancing be of any use? Please tell me the steps of how to implement functional load balancing?
Regards,
Aravind
Hi,
Load balancing will not necessary increase performance, it just distribute the load more evenly.
Is the DML statement only slow in specific instance?
To prove if there is problem with load balancing, have you tried connect to one instance and perform same DML statement? compare the result
Cheers

MULTIPLE LISTENER의 LOAD BALANCING 및 2개의 NETWORK CARD 사용 시 SETUP

제품 : SQL*NET
작성날짜 : 1997-11-24
MULTIPLE LISTENER의 LOAD BALANCING 및 2개의 NETWORK CARD 사용 시 SETUP
=====================================================================
Oracle V7.3의 SQL*Net 2.3의 새로운 기능으로 여러 개의 Listener를 띄우면서
상호 Load Balancing을 유지하는 기능을 소개하고자 한다.
Load Balancing 기능을 이용하여 각각의 Listener와 Oracle Instance 간의
Overloading을 줄일 수 있다.
다음의 예는 하나의 장비 내에 2개의 Network Card가 있을 경우에 대해 setup을
하는 방법이며 만일 하나의 Network Card가 있을 경우는 Host는 하나만 지정
하면 된다.
1. init<SID>.ora file을 지정할 Parameter
MTS_MULTIPLE_LISTENERS=TRUE
COMPATIBLE=7.3.2.0
2. 예를 들어 Listener를 2개 사용하는 경우라면 initSID.ora에
mts_dispatchers="tcp,10"
mts_max_dispatchers=20
mts_servers=20
mts_max_servers=40
mts_service=ORA73
mts_listener_address="(address_list=
(address=(protocol=tcp)(port=1621)(host=152.69.30.100))
mts_listener_address="(address_list=
(address=(protocol=tcp)(port=1622)(host=152.69.30.100))
mts_listener_address="(address_list=
(address=(protocol=tcp)(port=1623)(host=152.69.30.102))
mts_listener_address="(address_list=
(address=(protocol=tcp)(port=1624)(host=152.69.30.102))
3. listener.ora file에 설정되는 내용은
LISTENER1 =
(ADDRESS_LIST =
(ADDRESS =
(PROTOCOL = tcp)
(HOST = 152.69.30.100)
(PORT=1621)
(ADDRESS =
(PROTOCOL = tcp)
(HOST = 152.69.30.100)
(PORT=1622)
LISTENER2 =
(ADDRESS_LIST =
(ADDRESS =
(PROTOCOL = tcp)
(HOST = 152.69.30.102)
(PORT=1623)
(ADDRESS =
(PROTOCOL = tcp)
(HOST = 152.69.30.102)
(PORT=1624)
SID_LIST_LISTENER1 =
(SID_LIST =
(SID_DESC =
(SID_NAME = ORA73)
(ORACLE_HOME=/oracle2/ora73/app/oracle/product/7.3.2)
SID_LIST_LISTENER2 =
(SID_LIST =
(SID_DESC =
(SID_NAME = ORA73)
(ORACLE_HOME=/oracle2/ora73/app/oracle/product/7.3.2)
STARTUP_WAIT_TIME_LISTENER1 = 0
STARTUP_WAIT_TIME_LISTENER2 = 0
CONNECT_TIMEOUT_LISTENER1 = 0
CONNECT_TIMEOUT_LISTENER2 = 0
4. tnsnames.ora file에 설정되는 내용들
* 다수의 port에 Random하게 접속하는 경우
RANDOM =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(PROTOCOL = TCP)
(Host = 152.69.30.100)
(Port = 1621)
(CONNECT_DATA =
(SID = ORA73)
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(PROTOCOL = TCP)
(Host = 152.69.30.100)
(Port = 1622)
(CONNECT_DATA =
(SID = ORA73)
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(PROTOCOL = TCP)
(Host = 152.69.30.102)
(Port = 1623)
(CONNECT_DATA =
(SID = ORA73)
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(PROTOCOL = TCP)
(Host = 152.69.30.102)
(Port = 1624)
(CONNECT_DATA =
(SID = ORA73)
* 개개의 Port로 접속하는 경우
TORA1 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(PROTOCOL = TCP)
(Host =krrcsun)
(Port = 1621)
(CONNECT_DATA =
(SID = ORA73)
TORA2 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(PROTOCOL = TCP)
(Host =krrcsun)
(Port = 1622)
(CONNECT_DATA =
(SID = ORA73)
TORA3 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(PROTOCOL = TCP)
(Host =krrcsun)
(Port = 1623)
(CONNECT_DATA =
(SID = ORA73)
TORA4 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(PROTOCOL = TCP)
(Host =krrcsun)
(Port = 1624)
(CONNECT_DATA =
(SID = ORA73)
5. 각각의 Listener를 띄우는 방법
$ lsnrctl start LISTENER1
$ lsnrctl start LISTENER2

ITS load balancing issue

Hi all,
During our testing we are getting a load balancing issue. However, one of the agates in our network is has more CPU power than compared to the other agates in our ITS network. The memory on all the agate servers is the same.
Our current issue we are getting is the one agate that has more cpu power but acquires more sessions as compared to the other two agates. It roughly gets 60 more sessions per agate process as compare to the other Agate servers. Does having more cpu on a Agate affect the load balancing on ITS? We are on ITS patch level 19 with the Hotfix.
Thanks,
Jin Bae

Hello Jin,
yes, at (re)initialize the WGate retrieves the capacity from the AGates.
This is an accumulated number based on CPU performance and the number of CPUs!
The number can be seen in "wgate-status" as the "Capacity" of the AGate.
When running multiprocess Agates the number is retrieved from the MManager and also involves the number of agate-processes.
The WGate dispatches the load in proportion depending on these capacity numbers.
By my knowledge there is no way that these values can be configured (fixed).
Regards,
Fekke

Load balancing in 10g RAC

why we need to have load balancing(client and server side load balancing) in 10g RAC environment

853910 wrote:
why we need to have load balancing(client and server side load balancing) in 10g RAC environmentIn simple words because you don't want just one node to be getting busy with all the workload coming up but you do want the work to be divided among all the nodes in teh cluster since the RAC is based on the principle of divide and rule .
Aman....

SIP load balancing issue with ACE 4710

SIP Load balancing Issue with ACE 4710
I have a Cisco ace 4710 with vesion Version A4(2.2). i configued simple SIP load balancing first without stickiness. without stikeiness we are having a problem because bye packet at the was not going to the same server all the time that left our port in used even though user hang up the phone. its happen randmly. i have a total 20 licenced ports and its fill out very quickly. so i dicided to use the stickiness with call-ID but still same issue. below is the config
rserver host CIN-VOX-31
ip address 172.20.130.31
inservice
rserver host CIN-VOX-32
ip address 172.20.130.32
inservice
serverfarm host CIN-VOX
probe SIP-5060
rserver CIN-VOX-31
    inservice
rserver CIN-VOX-32
    inservice
sticky sip-header Call-ID VOX_SIP_GROUP
timeout 1
timeout activeconns
replicate sticky
serverfarm CIN-VOX
class-map match-all CIN_VOX_L4_CLASS
2 match virtual-address 172.22.12.30 any
class-map match-all CIN_VOX_SIP_L4_CLASS
2 match virtual-address 172.22.12.30 udp eq sip
policy-map type loadbalance sip first-match CIN_VOX_LB_SIP_POLICY
class class-default
    sticky-serverfarm VOX_SIP_GROUP
policy-map multi-match GLOBAL_DMZ_POLICY
   class CIN_VOX_SIP_L4_CLASS
    loadbalance vip inservice
    loadbalance policy CIN_VOX_LB_SIP_POLICY
    loadbalance vip icmp-reply
class CIN_VOX_L4_CLASS
    loadbalance vip inservice
    loadbalance policy CIN_VOX_LB_SIP_POLICY
    loadbalance vip icmp-reply
interface vlan 20
description VIP_DMZ_VLAN
ip address 172.22.12.4 255.255.255.192
alias 172.22.12.3 255.255.255.192
peer ip address 172.22.12.5 255.255.255.192
access-group input PERMIT-ANY-LB
service-policy input GLOBAL_DMZ_POLICY
could you please help me on this...
thanks
Rakesh Patel

I mean there should be one more statement-
class-map type sip loadbalance match-any CIN_VOX_LB_SIP_POLICY
match sip header Call_ID header-value sip:
and that will be called under-
policy-map multi-match GLOBAL_DMZ_POLICY
   class CIN_VOX_SIP_L4_CLASS
    loadbalance vip inservice
    loadbalance policy CIN_VOX_LB_SIP_POLICY
    loadbalance vip icmp-reply
is that missing in your config ?

CSS arrowpoint cookie load balancing issue

Hi guys,
I need some advice on a load balancing issue.
We have connections hitting the CSS via a proxy environment. As a result i see only one source ip address. I want to use arrowpoint cookies for session stickeyness. However when i enable the rule the tcp session negotiation fails. The CSS sends a TCP/RST which terminates the session.
Here's the rule config:
content HTTP_rule
add service ZSTS299102
add service ZSTS281101
vip address <filtered>
add service LONS299102
add service LONS281101
balance weightedrr
change service ZSTS299102 weight 5
change service ZSTS281101 weight 5
advanced-balance arrowpoint-cookie
protocol tcp
port 80
url "/*"
active
Any help would be much appreciated.

Remko,
in L3/L4 the CSS sends the SYN directly to the server.
So when the FIN comes in, we simply pass it to the server.
With L5 the CSS spoofs the connection and we select the server only after receiving the GET.
If there was some delay between the GET and the FIN, the CSS would have time to establish a connection with the server and the FIN could be simply forwarded.
Unfortunately, in this case the FIN is right after the GET with no delay.
Gilles.

How Load Balance works in RAC?

Hi All,
I have a 2-node 10gR2 RAC on RHEL4. One of our web based application is connecting to the RAC database. Today, while starting up the application, one of our node(node1) was down and all the connections from the app are connected to the DB using other node(node2). There were around 120 connection from application. Again, i brought back the node1 but still, the connections were on node2 and no connection on node1.
My doubt is, how the load balancing works in RAC? is there limit like after some number of connections, it will load balance to other node?
Thanks,
Praveen.

If all the connections go to node 2 cause node 1 is down, then, when node 1 comes back, those connections already established on node 2 will remain on node 2. There is no mechanism to migrate existing connections. However, over time, as more connections come in, they should go to node 1. Over time, the load should balance out. But, the only way to immediately rebalance would be to force existing connections to recycle their connection.
If one node is capable of handling the load, I wouldn't worry about it....over time, things will balance out.
-Mark

RAC Load Balancing Issue

Experts,
We are using 9i RAC database(2 Nodes). Our Problem is Node1 is not getting too much connections,
but node2 is getting too much connections.
Difference between these two is around 400
example
Node1 ---> 70
Node2 ---> 465
How i could solve this issue?
Thanks
R.Sundaravel

It depends on how you have defined Load Balancing.
If you have client-side load balancing (e.g. with LOAD_BALANCE=ON in the tnsnames.ora file), it is the client(s) that decide which node to connect to. If you have server-side load balancing (e.g. with the database instances and listeners cross-registered such that the database instance PMON update both listeners), the listeners would be able to redirect client connections to the "less loaded" node.
Hemant K Chitale

Load Balancing with 10g RAC

Hi,
I have one query regarding balancing load with RAC.
We have some batch processes executed from shell script in Oracle RAC environment where a separate node is used for failover only. There are some issues related with performance. We are looking for a solution to utilize 'idle' node used for failover to resolve this issue.
I want to know whether the below mentioned scenario is possible to achieve with 10gRel2 RAC.
A batch process is running and it is utilizing all resources (CPU) of instance 1, then it is possible by any means that this process be split and distributed to idle instance 2 on another node?
Looking for expert advice.
Regards
Amit

Hi Amit,
I;ve done lots of RAC implementations, and it;s critical to set-up the primary node accordig to the "type" of table access. For example, cistomer queries on node 1, order queries on node 2, etc. Minimizing pinging is very important!
Staring in Oracle 10g release 2, Oracle JDBC and ODP.NET provide connection pool load balancing facilities through integration with the new “load balancing advisory” tool. This replaces the more-cumbersome listener-based load balancing technique.
I have more notes here:
http://www.dba-oracle.com/oracle10g_tuning/t_grid_tuning.htm
Hope this helps. . .
Donald K. Burleson
Oracle Press author

Load Balancing Issues SOMEBODY HELP ME!!

Good Morning.
A few days ago we implemented Load Balancing in our company, I printed a step by step procedure from MS and just follow it thinking that once I did that everything was going to be ok, but I am some issues that I managed to fix, but now I am stock in one
that I just can't figure it out, here I go.
When regular users try to connect to the Farm using the external IP they can't connect, we checked firewall seems to be ok, we check the configuration we did and we didn't miss any step, NOW here is the crazy part, when we use our Admin ID we can connect,
so I thought maybe is an Active Directory thing, but I don't know where to look or what to do so my questions are,
Can this be a licensing issue?
Do I have to have my TSBroker as part of my group of PC in the firewall?
Can it be a certificate issue? (not too sure because I can connect as an admin)
Can it be permissions to log in to the servers?
My co-worked is telling me now that if TS Broker sent them to TS1 they can connect but if TSBroker send them to the other two members of the farms they can't connect, TS1 is the original TS before this whole Load Balancing thing.
we tried so many solutions that we can find online and come up with and nothing seems to be working, so what do I do? What did I do wrong when I configure the Load balancing? is there any step beside what MS told me that I am missing...
PLEASE HELP!!
Thank you..

Hi Rodrigo,
Thank you for posting in Windows Server Forum.
What’s your server OS in your environment?
Firstly see that, if you have not set up RD Licensing server and don’t have RDS CAL then your administrator can only get access for RDP connection (only 2 connection for Admin purpose). Now if you want more than 2 connection you need to setup RD Licensing server,
activate it, purchase RDS CAL and install it. After installing, you need to see that your user have enough permission to access RDS server and your user must be added under “Remote Desktop User” local group under RDS Server.
As you have commented that your admin can able to connect so I think you must have the issue with user permission, please go through above points and check the result.
Please check below article for more details.
1. TS Session Broker Load Balancing Step-by-Step Guide (Server 2008)
2. Checklist: Create a Load-Balanced RD Session Host Server Farm by Using RD Connection Broker (Server 2008 R2)
Hope it helps!
Thanks.
Dharmesh Solanki

JDBC load balancing with non RAC replicated instances

Hi,
The thin JDBC load balancing feature only works with RAC clusters or it can be used with two non RAC replicated instances using the same service name?
Thanks,
Ezio.

Thank you Douglas for your time.
I assumed the first case (database connection load balancing). I thought that the listener would do the load balancing and failover trick. So, I configured the JDBC connection as follow:
String MM_loadBalance1_DRIVER = "oracle.jdbc.driver.OracleDriver";
String MM_loadBalance1_USERNAME = "scott";
String MM_loadBalance1_PASSWORD = "tiger";
String MM_loadBalance1_STRING = "jdbc:oracle:thin:@(DESCRIPTION=" +
" (LOAD_BALANCE=on) (FAILOVER=on)"+
" (ADDRESS_LIST="+
" (ADDRESS=(PROTOCOL=TCP)(HOST=test1) (PORT=1521))"+
" (ADDRESS=(PROTOCOL=TCP)(HOST=test2)(PORT=1521)))"+
" (CONNECT_DATA=(SERVICE_NAME=test)))";
Driver DriverRecordset1 = (Driver)Class.forName(MM_loadBalance1_DRIVER).newInstance();
Connection ConnRecordset1 = DriverManager.getConnection(MM_loadBalance1_STRING,MM_loadBalance1_USERNAME,MM_loadBalance1_PASSWORD);
But, when one of the instances was down (test1), the connection failed, it didn't failed over to the other instance (test2).
So I wondered if it failed due to some misconfiguration issue or because it only works with RAC instances...

CSS11500 Load Balancing issue

Hi all,
I using the CSS 11500 sg0750004 (07.50.0.04) to balacing requests between two web application servers, but the after applied the configurations, the balancing requests don't occurs as expect, see the configuration applied:
service SAPSRV1_8000
ip address 192.215.13.44
protocol tcp
keepalive method get
keepalive type tcp
keepalive port 8000
keepalive frequency 30
port 8000
string sapsrv1
active
service SAPSRV2_8000
ip address 192.215.13.45
protocol tcp
keepalive method get
keepalive type tcp
keepalive port 8000
keepalive frequency 30
port 8000
string sapsrv2
active
content SAPSRVS_8000
    add service SAPSRV1_8000
    add service SAPSRV2_8000
    vip address 192.215.13.40
    advanced-balance cookies
    string process-length 7
    no persistent
    protocol tcp
    port 8000
    url "/*"
    string prefix "sap-hostid="
    string range 1 to 1999
    active
group SAPSRV1_SAPSRV2Servers
add destination service SAPSRV1_8000
add destination service SAPSRV2_8000
vip address 192.215.13.40
active
So, the VIP Address is exclusively to the group service and the tcp port also is exclusively.
Could you please assist me, why the load balancing doesn't running correctly?
Case need more information, please let me know.
Thank you in advanced.
Sergio Lima

Hello Sergio,
Can you please elaborate on the issues you are experiencing? When you mention the VIP is not working as expected is that due to the fact that the connection simply hangs? Is the CSS actually balancing the inbound traffic? Or is it successfully balancing the traffic, but not maintaining session persistence based on the server-side cookie? Do you know if the session cookie will be embedded within the HTTP header or the URL string? If you are unsure you can always change the "advanced-balance" method to "cookie-url". Can you ping the VIP address?
Also, can you confirm that the server-side cookie should be located directly after the following name "sap-hostid="?
Ex:
sap-hostid=sapsrv1
The reason why I ask is you do not have a string skip-length defined so the CSS will attempt to locate the server-side cookie string after the prefix.
Also, have you verified the services have passed their keep-alive check? This can be performed by running the following command:
show service-summary
Both of the services should "alive" on their keep-alive check.
Also, on your service configuration you do not require the "keepalive method get" command since the services are setup to perform a tcp socket connection for their keep-alive check and not a keepalive type of http to a URI page.
service SAPSRV1_8000
ip address 192.215.13.44
protocol tcp
keepalive type tcp
keepalive port 8000
keepalive frequency 30
port 8000
string sapsrv1
active
service SAPSRV2_8000
ip address 192.215.13.45
protocol tcp
keepalive type tcp
keepalive port 8000
keepalive frequency 30
port 8000
string sapsrv2
active
Also, based on the service and content rule configuration it would seem as though your CSS has been deployed in Bridged Mode (single Circuit VLAN). That being said, the Group Rule will allow users from the 192.215.13.0/24 network to establish a port 8000 connection to the 192.215.13.40 VIP. However, please be advised external clients establishing a connection to the 192.215.13.40 VIP will "appear" as the .40 VIP address within the destination server logs. The CSS will SNAT the inbound client traffic and masquerade their true source address as the VIP. Unfortunately, the CSS does not support the X-Forwarded-For HTTP header option. However, this can be bypassed through the use of ACLs on the CSS.
- Jason

Load-balancing issues with iPlanet and multiple clusters

We're in performance test of a large-scale clustered deployment based on WLS 5.1sp10.
Due to scalability/functionality issues, some of which we've seen firsthand and
some of which we've been informed of by associates as well as BEA representatives,
we've chosen to implement multiple clusters with a maximum of three nodes each.
These clusters will be fronted by a web server tier consisting of iPlanet servers
using the proxy plugin.
Due to hardware constraints (both in test and in production), however, we've configured
the iPlanet servers to route across the multiple clusters. In our test environment,
for instance, we've got a single iPlanet server routing across two 3-node clusters,
and the configuration in obj.conf is as follows:
<Object name="application" ppath="*/application">
Service fn="wl-proxy" \
WebLogicCluster="clusterA_1:9990,clusterB_1:9991,clusterA_2:9990,clusterB_2:9991,clusterA_3:9990,
clusterB_3:9991" \
CookieName="ApplicationSession"
</Object>
Our issue is that the load-balancing doesn't appear to work across the clusters.
We're seeing one cluster get about 90% of the load, while the other receives
only 10%.
So, the question (finally!) is: Is this configuration correct (i.e., will it
work according to the logic of the proxy plugin), and is it appropriate for this
situation? Are there other alternative approaches that anyone can recommend?
Thanks in advance,
cramer

I use weblogic6.1 with sp2+windows 2000.I develop a web application and deploy
it to cluster.Through HttpClusterServlets proxy of weblogic I found that a server
in cluster almost get 95% of requests but another only get 5% of requests.Why???
I don't set any special parameter.And the weight of the two clustered server is
equal.I use round-robin arithmetic.
Thanks!
"cramer" <[email protected]> wrote:
>
We're in performance test of a large-scale clustered deployment based
on WLS 5.1sp10.
Due to scalability/functionality issues, some of which we've seen firsthand
and
some of which we've been informed of by associates as well as BEA representatives,
we've chosen to implement multiple clusters with a maximum of three nodes
each.
These clusters will be fronted by a web server tier consisting of iPlanet
servers
using the proxy plugin.
Due to hardware constraints (both in test and in production), however,
we've configured
the iPlanet servers to route across the multiple clusters. In our test
environment,
for instance, we've got a single iPlanet server routing across two 3-node
clusters,
and the configuration in obj.conf is as follows:
<Object name="application" ppath="*/application">
Service fn="wl-proxy" \
WebLogicCluster="clusterA_1:9990,clusterB_1:9991,clusterA_2:9990,clusterB_2:9991,clusterA_3:9990,
clusterB_3:9991" \
CookieName="ApplicationSession"
</Object>
Our issue is that the load-balancing doesn't appear to work across the
clusters.
We're seeing one cluster get about 90% of the load, while the other
receives
only 10%.
So, the question (finally!) is: Is this configuration correct (i.e.,
will it
work according to the logic of the proxy plugin), and is it appropriate
for this
situation? Are there other alternative approaches that anyone can recommend?
Thanks in advance,
cramer

Could not retrieve Enterprise Global Template - Load balancer issue

Hi,
We have 4 Project Server 2010 servers. The 4 web servers are load balanced by networking team with sticky session configured.
When we try to connect to the Project Server using MPP 2007 SP2, it fails saying 'Could not retrieve Enterprise Global template'. It works perfect when we point to a specific server by specifying the IP address for server name in the 'hosts'
file.
Earlier we observed some errors in the event viewer related to the SharePoint's internal load balancer for which restarted the 'Project Server Application' on each web server and it got fixed.
Now, the only entries that we see related to load balancer are as mentioned below as Information (not errors).
SharePoint Web Services Round Robin Service Load Balancer Event: Initialization
Process Name: w3wp
Process ID: 15080
AppDomain Name: /LM/W3SVC/539065287/ROOT-1-130462463500778047
AppDomain ID: 2
Service Application Uri: urn:schemas-microsoft-com:sharepoint:service:ae7c7ee5c09b4e8198bdbb1ecb8c1c1b#authority=urn:uuid:9f626d347784423eb14bde4a1f4d13fc&authority=https://lonms12546:32844/Topology/topology.svc
Active Endpoints: 4
Failed Endpoints:0
Endpoint List:
http://lonxxx2532:32843/ae7c7ee5c09b4e8198bdbb1ecb8c1c1b/PSI
http://lonxxx2545:32843/ae7c7ee5c09b4e8198bdbb1ecb8c1c1b/PSI
http://lonxxx2546:32843/ae7c7ee5c09b4e8198bdbb1ecb8c1c1b/PSI
http://lonxxx2566:32843/ae7c7ee5c09b4e8198bdbb1ecb8c1c1b/PSI
Could the issue be due to network load balancer?
Could the issue be due to Sticky session configuration on the load balancer.?
How can we get to the root cause of the issue?
Which logging category should we set to 'Verbose' that can give us some hint.
Update: We tried to capture the requests through fiddler and observed that when fiddler is running on the client computer then the connection works perfectly fine even through the load balancer. Probably fiddler is reformatting the SOAP
envelop of the web service requests the way it should before sending the request to the server.
If we do not run fiddler and run some other similar tool (like Charles) then it again gives the issue and the request stucks at /PWA/_vti_bin/psi/winproj.asmx
We ran Wireshark on the servers and found the following for that web service call:
[TCP Previous segment not captured] Continuation or non-HTTP traffic.
Please let me know if someone could provide any hint what can be done next.
Regards, Amit Gupta

There are several ways to configure your load balancer. I would suggest that you work with the network engineer, the load balancer vendor and your project administrator to resolve this issue.
Basically you need URL to be resolved correctly. Also, I don't believe PS2007 did a good job handling load balancing, so you may need to bring someone in good with IIS and see they can tweek IIS to manage the cache better.
As I go back and look at your analysis, I think you should probably look at upgrading to Project Server 2013. They made some improvement in load balancing and the management of distributive cache.
I assume you have 4 WFE because you have thousands of project users. Roughly how many you have? Over 1000, over 5000
Have you tried to see if using two load balancing work? How about just one front end. I often see companies scaling SharePoint and Project server to extremes.
Michael Wharton, MVP, MBA, PMP, MCT, MCTS, MCSD, MCSE+I, MCDBA
Website http://www.WhartonComputer.com
Blog http://MyProjectExpert.com contains my field notes and SQL queries

Load Balancing issue on RAC setup

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