Oracle Portal Load Balancing question

Our customer wishes to have multiple Oracle Application Servers running Oracle Portal, with load balancing. They would like to have Web Cache collocated with one of these Portal servers, operating as a load balancer for the Portal servers (including the one collocated with Web Cache). Our understanding is that this is not supported, since Web Cache must use the same port number as the destination server it is load balancing, and this is a problem with collocation. The alternative of using mod_oc4j load balancing by OHS is we understand not supported for Portal. The customer does not wish to use external, hardware load balancers, or operating system load balancing. We understand that the solution is to use Web Cache on a dedicated separate server, to load balance the Portal servers. Can you please confirm that, or is collocation possible to avoid the cost of the dedicated Web Cache server.
thanks,
Message was edited by:
user582458

<<
We understand that the solution is to use Web Cache on a dedicated separate server, to load balance the Portal servers. Can you please confirm that, or is collocation possible to avoid the cost of the dedicated Web Cache server
>>
You are right .. if the client does not want use load balancer you have no other choice.

Similar Messages

SO Load Balancing Question

Hi all,
I have a service object (SO1) which has been set to Load Balancing.
This service object has an attribute which serves as a number allocator
(NA1).
This NA1 provides a unique number across the whole application for each of
the record that require to store into DB.
The problem is, will the NA1 get replicated if the SO1 is replicated?
If yes, will NA1 crash?
Regards,
Martin Chan
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Senior Analyst/Programmer
Dept of Education and Training
Mobile : 0413-996-116
Email: martin.chandet.nsw.edu.au
Tel: 02-9942-9685

Hi Serge,
Could you prefix it with the PID of the load balanced process ?No I can't. At least not at the moment.
When a service object is replicated, it is automatically replicated into adifferent partition...
Thanks.
An advice, make the NA1 shared. So if you get to do multithreaded accessto
it, you won't screw up things.I am thinking it may be better off to create it as a service object on it's
own.
How is the number returned by the NA1 generated ?It gets generated by Forte's code.
... Try to make it so that the
load balanced partitions don't need to access the database more than onein
5 min. to get a new Seed Key. This would not need to PID.Thanks for your advise.
Regards
Martin Chan
-----Original Message-----
From: Serge Blais [mailto:Serge.BlaisSun.com]
Sent: Tuesday, 3 April 2001 14:17
To: Chan, Martin
Subject: RE: (forte-users) SO Load Balancing Question
Your right, they can generate the same number. How much control do you have
over the ID being generated? Could you prefix it with the PID of the load
balanced process ?
Just a note: When a service object is replicated, it is automatically
replicated into a different partition, possibly on the same machine or on a
different one.
An advice, make the NA1 shared. So if you get to do multithreaded access to
it, you won't screw up things.
How is the number returned by the NA1 generated ? If NA1 is using a stored
procedure, or something like:
Start TRX
read number
newnumber = number+5000
write back newnumber
End Trx
Something like will be very safe. The Database Index Table is taking care
of the critical section. Then you can be sure that each replicate can be
independent (not hit into each other) for 5000 iterations. Depending on the
frequency, you may want to up this number or lower this number. Too high it
would make the key very high very soon with wholes in the sequence. Too low
and you would have hit between the replicates. Try to make it so that the
load balanced partitions don't need to access the database more than one in
5 min. to get a new Seed Key. This would not need to PID.
Serge
At 01:59 PM 4/3/2001 +1000, you wrote:
Hi Serge,
The number return by the NA1 is used as a primary key for each of therecord
that stores in the DB.
The Number Allocator NA1 is required to access to DB to update an ID table
which carry the next available sequence number. NA1 will only update this
table for every 5000 records.
For example, the initial value of the sequence is: 1
The next update will change the value to 5001, next will be 10001 and soon.
>
The properties of this NA1 class at runtime
Shared - Disallowed
Distributed - Disallowed
Transactional - Is Default
Monitored - Disallowed
Unfortunately, this attribute is not a handle but is instantiated by theSO1
itself.
I have been thinking, if SO1 is replicated within the same partition, and
each replicate will carry its own NA1. NA1 and the replicate of NA1 may
return a same number if their initial values of the sequence are the same.
Correct?
Regards
Martin Chan
-----Original Message-----
From: Serge Blais [mailto:Serge.BlaisSun.com]
Sent: Tuesday, 3 April 2001 13:11
To: Chan, Martin; forte-userslists.xpedior.com
Subject: Re: (forte-users) SO Load Balancing Question
Let's see if I understand right.
You have a service object that keep a handle to an object that either keep
state information, or that generate state information. Now the thing to
figure out is which is it. Let's assume that NA1 is a number generator,
that does not need to be synchronized or that doesn't need to access any
external resource. It would still work, depending on the algorythm you are
using.
Will they share the same NA1? It depends on the nature of NA1, but for sure
NA1 would have to be an anchored object. An if multiple partitions would
share the same object "only" for key generation, you would bring down your
performance on key generation or key update (by adding one inter-process
call).
In short:
1. Many scenarios can happen, you need to be clearer on your description.
2. If you are sharing an object by load balanced partitions, this greatly
reduce the gain of load balancing the partition.
3. If NA1 is keeping state, any access to it would need to be controlled
"shared".
Have fun now...
Serge
At 12:30 PM 4/3/2001 +1000, Chan, Martin wrote:
Hi all,
I have a service object (SO1) which has been set to Load Balancing.
This service object has an attribute which serves as a number allocator
(NA1).
This NA1 provides a unique number across the whole application for each
of
the record that require to store into DB.
The problem is, will the NA1 get replicated if the SO1 is replicated?
If yes, will NA1 crash?
Regards,
Martin Chan
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Senior Analyst/Programmer
Dept of Education and Training
Mobile : 0413-996-116
Email: martin.chandet.nsw.edu.au
Tel: 02-9942-9685
For the archives, go to: http://lists.xpedior.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in a new
email the word: 'Unsubscribe' to: forte-users-requestlists.xpedior.comSerge Blais
Professional Services Engineer
iPlanet Expertise Center
Sun Professional Services
Cell : (514) 234-4110
Serge.BlaisSun.comSerge Blais
Professional Services Engineer
iPlanet Expertise Center
Sun Professional Services
Cell : (514) 234-4110
Serge.BlaisSun.com

BIP and Siebel server - file system and load balancing question

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http://myforums.oracle.com/jive3/thread.jspa?threadID=335601

Hi Sravanthi,
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Oracle Weblogic Load Balancing/Clustering

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HRDEV\webserv\hrdev\applications\peoplesoft\PORTAL.war\WEB-INF\psftdocs\hrdev\configuration.properties
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As this is peoplesoft specific configuration
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Best Regards
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(ADDRESS = (PROTOCOL = TCP)(HOST = dev020.net)(PORT = 1795))
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(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = dev010.net)(PORT
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(PROGRAM = extproc)
(SID_DESC =
(ORACLE_HOME = /oracle/ora92)
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Try this:
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TIA,
Andi

Hi Andi,
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G

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I did not able to understand why you want to give ip to two NICs from different subnets.
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Eliot

Hi Eliot,
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Hope this helps
Brett

Oracle RAC load balancing sessions

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Best regards,
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Oracle RAC Load Balancing

I have Oracle 10g RAC database with 6 node installed. Now i want to do load balaning for few users not for all.
Suppose i have users a,b,c,d & e are there and i want to redirect the login of users a,c & e throgh node 5. How can i achieve this using server side load balancing ?
Thanks in Advance.

973407 wrote:
I have Oracle 10g RAC database with 6 node installed. Now i want to do load balaning for few users not for all.
Suppose i have users a,b,c,d & e are there and i want to redirect the login of users a,c & e throgh node 5. How can i achieve this using server side load balancing ?
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Oracle RAC - Load Balancing Problem

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Srinivas Chintala wrote:
Hello Joe,
Here is the configuration:
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PasswordEncrypted="{3DES}5M6WvgV8GsA=" Properties="user=apps"
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TestConnectionsOnReserve="true"
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<JDBCConnectionPool DriverName="oracle.jdbc.OracleDriver"
InitialCapacity="10" MaxCapacity="30" Name="rac_node2"
PasswordEncrypted="{3DES}5M6WvgV8GsA=" Properties="user=apps"
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3 - You can change your TestTableName to "SQL BEGIN NULL; END;" which goes
even faster than "select 1 from dual".
And the main problem is:
4 - Your JDBCDataSource doesn't seem to be a transactional one, so any
application code that gets connections from that, will get independent
connections each time, and their work will not be included in any WLS
controlled transactions. You want to make/use a JDBCTxDataSource.
Joe

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          Guylaine Cantin wrote:
          > I am using Weblogic 6.1. My Windows NT environment consists of 10 web client-simulator
          > machines, 2 App. Server machines and one database server machine. I have defined
          > one cluster on each app. server. Each cluster is running 3 Weblogic instances, or
          > so it should be when I fix my problems!
          >
          > My questions/problems are the following:
          >
          > 1. Can I use a software dispatcher to perform workload balancing between the 2 weblogic
          > clusters? That is, the client-simulator machines send the requests to the software
          > dispatcher which performs workload balancing between the 2 Weblogic clusters. The
          > clusters perform round-robin amongst all instances. Note that the documentation only
          > talks about Hardware Balancing.
          >
          We also support software load balancers (for e.g. resonate)
          The software dispatcher should be intelligent enough to decode the
          cookie and route the request to the appropriate servers. This is
          necessary to maintain sticky load balancing.
          > 2. I am having problems with my multicast IP addresses. For instance, on one App.
          > Server machine, I am using the multicast IP address: 239.0.0.1 for MyCluster. When
          > I start the Admin Server, I get a JDBC error: "... multicast socket error: Request
          > Time Out". I have used the utils.MulticastTest utility which shows the packets not
          > being received:
          >
          > I (S1) sent message num 1
          > I (S1) sent message num 2
          > I (S1) sent message num 3
          > I (S1) sent message num 4
          > ...
          >
          > What am I doing wrong?
          >
          You should run the above utility from multiple windows and see if each
          of them being recognized or not.
          i.e. java utils.MulticastTest -N S1 -A 239.0.0.1
          java utils.MulticastTest -N S1 -A 239.0.0.1
          > 3. Re. the cluster configuration:
          >
          > NOTE: I have executed my workload using 2 independent App. Server machines with a
          > software dispatcher - no clustering. Each App. Server used a jdbc connection pool
          > of 84 database connections. The db connections happened to become my bottleneck.
          > When I tried to increase the number of connections in the jdbc pool, throughput decreased
          > dramatically. Thus, I decided to add a cluster of Weblogic instances to each one
          > of my 8 x 900Mhz machines in order to scale up. Unfortunatly, adding clusters have
          > not been that simple a task - probably because I am totally new to the Web Application
          > Server world!
          >
          You have to stress test your application several times and set
          maxCapacity of the conn pool accordingly.
          > Here is what I've got so far:
          >
          > I have obtained 3 static IP addresses for the 3 instances of Weblogic instances that
          > I wish to run within the cluster. All servers in the cluster use port number 80.
          > There is a corresponding DNS entry for each IP address. My base assumption is that
          > one of these instances will double up as the Administration Server... Is it true,
          > or do I need to define a separate Admin server if I wish to run 3 Weblogic instances
          > (each with a connection pool of 84 database connections for a total of 252 database
          > connections)?
          BEA recommends to use Admin server for administrative tasks only
          like configuring new deployments, jdbc conn pools, adding users etc..
          It's not a good idea to have admin server part of cluster.
          >
          > Do I need to re-deploy my applications for the cluster? And if so, would this explain
          > why I am having problem starting my Admin Server?
          >
          You have to target all your apps to the Cluster.
          > I think this is it for now. Any help will be greatly appreciated!
          >
          > Thanks in advance,
          >
          > Guylaine.
          >

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Regards
Barry
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JHS: 10.1.2.26

Hi,
this is what you want to read :
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Any insight will be helpful.
Adit

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Please ensure that you mark a question as Answered once you receive a satisfactory response.

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