Problem with HTTP load balancing

Hello Experts
I have a problem when i do loadbalancing for links like http://1.1.1.1/site/home where 1.1.1.1 is the VIP address (i got http not found), while it is working fine when the link is http://1.1.1.1,
the link is working fine on the real servers for example when i try http://2.2.2.2/site/home it works
by the way, im not doing URL loadbalancing,
any ideas
Thank you in advance

It is generally good idea for this type of cases to get a sniffer trace (in ACE module span 10G backplane interface from supervisor or if ACE appliance take parallel span session of client and server vlan).
This case was investigated in TAC SR and this is a small summary of the traces that may help other users hitting this issue (usually it is good idea to filter by http and client IP) :
This is what we have seen for the non-working scenario.
Packet 1: Client sends HTTP GET to ACE VIP
Packet 2: ACE forwards HTTP GET to RSERVER
Packet 3: RSERVER answers ACE with HTTP 404
Packet 4: ACE forwards the real server response (HTTP 404) to the client
ACE was not changing anything in the packets that were being loadbalanced. And the HTTP 404 error sent from the server that ACE was forwarding indicates that the Web server thinks that the HTTP data stream sent by the client was correct, but simply can not provide the access to the resource specifief by URL.
Bottom line it was found that in this case the server behaves in a different way based on the hostname used to connect to the application, and this should be addressed on the application/server side. An easy way to check this is by using the server name pointing to the vip in local client hostfile.

Similar Messages

Best HTTP load balancing method

This is probably basic, but how satisfactory is this http load balancing method:
service http-1
ip address 192.168.1.10
protocol tcp
port 80
keepalive type tcp
active
service http-2
ip address 192.168.1.9
protocol tcp
port 80
keepalive type tcp
active
owner http
content web-domains
vip address 10.0.0.1
add service http-1
add service http-2
protocol tcp
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balance leastconn
active
Should I rather use sticky-mask 255.255.255.255 or advanced-balance sticky-srcip?

It really depends what you are doing.
Some people will find this acceptable and for others it will just not work.
Do you need persistency ?
To answer this question check with your webserver admin.
does this website have a shopping basket ?
Finally, changing the sticky-mask is useless if you do not have sticky-srcip. So your question should be ..or .. but .. and ..
Anyway, it all depends what is required for your website to work.
You can try this config and if you run into problem capture a sniffer trace and identify the problem to see if a configuration change is needed.
Regards,
Gilles.

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What is WLS and OHS versions are you using in this environment?
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Problem with delta load urgent!!

Hi,
I have a problem with delta load
We have an IP, which loads data from R/3 system daily, its a delta load to the ODS and it updates to the cube with the selection on Company Codes and 0FISCPER
we are in 3.5 system
For a couple of company codes A & B, the init was done for the period 07.2010 to 12.2099 and after tht the deltas are loaded from 07.2010 till 12.2099 and there's no pblm with tht
Now, there was some updation in R/3 system and the data was maintained for the company codes in A& B for the FISCPER 001.2010 to 006.2010, for which init wasnt maintained...
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pls throw ur inputs ASAP
thank you

Hi Prince,
No need to maintain any Init for this data, It will be enough if you can load the data from jan 2010 to jun 2010 into your Info Cube.
Follow the below steps:
1)create full load IP for this data source.
2) give the selection as A and B company codes and 0FISCPER as 001.2010 to 006.2010
3) in menu bar, click on scheduler --> select full repair request
4) In the next screen check the check box and save
5) Now execute the IP, it will the data with out disturbing your daily delta.
follow the same procedure to load data till to your Info Cube.
Please revert if you have any questions
Regards,
Venkatesh

Problems with the load of Deliveries

Hi experts,
I am having some problems with the load of Deliveries from R/3 into BW.
In LIPS table of R/3, there are 41412 records. I delete the setup tables and realize the extraction with the transaction OLI8BW. After that I launch a simulation with RSA3 but only 6765 records are taken into account.
Apart of that, there is a range of deliveries documents (between 180000000 and 1084000000) that is not be taken into account.
Has someone have similar problems with the load of deliveries?
Thanks.

Matute,
you can try comparing those missing records with those already extracted. I found in my side that some records with document category of "H"(Returns) don't be extracted by 2lis_12_vcitm.
Jin Ming

Problems with pages loading

We are having a lot of problems with pages loading slowly or not at all. We get this message all the time...server not found...even on pages that have just recently been visited. We have this problem with Safari, Firefox, and Camino. I don't have Internet Explorer installed, but why should I just keep adding new browsers. My ISP assures me that the connection is fine. I have emptied caches, cookies, whatever I can find to empty. Did I empty too much? We use a Netgear router and a company called Digitron. Any suggestions?
Message was edited by: cynder13

Hi
Perhaps the easiest way to sort this out is to set up a separate Network Location for your connection:
-Location - set up a personal location by clicking on the drop down menu and selecting "add a location". Use a name familiar to you. Once established, select "apply".
-Next, click on the "Show" drop down menu and select Network Port Configurations. Only Airport ought to be checked. Move it to the top of the list (you can drag it). Select "apply".
-Back to the "Show" menu, select "Airport". Click on the TCP panel. There, enter 4.2.2.2 and 4.2.2.1 (separate lines) in the DNS servers box and select "apply". Also, you can always call your Internet Provider to find out if they have specific codes.
Creating a personal location, plus adding the DNS codes seems to speed things up. Otherwise, the "automatic" function has a tendency to "search" for available locations, hence creating the lag you are seeing.
Lastly, in the Finder, go to your Applications>Utilities folder and select "Terminal". Once the screen is open copy/paste lookupd -flushcache and press return. This clears out the DNS cache. Once done, quit Terminal.
If the above doesn't help, I suspect the Router is the problem. Perhaps you need to upgrade its firmware. Check at the Netgear site>Support.
Post back

HTTP Redirect with Global Load Balancing

I've seen a lot of documentation about redirects and what I am trying to do seems simple enough yet I can't get it to work. Here is a summary:
We have two CSSs in different data centers with load balancing in a roundrobin fashion.
User types www.test.com:9086/test.html
User hits one of the CSSes configured to respond to www.test.com, CSS1 and CSS2.
If CSS1 gets the request, it should redirect request to server1:9086/test.html
If CSS2 gets the request, it should redirect request to server2:9086/test.html
Here is a sample of one of the CSSes:
content vTEST
dnsbalance roundrobin
add dns www.test.com
url "/*"
protocol tcp
port 9086
vip address 192.168.3.135
add service rTEST
active
service rTEST
protocol tcp
port 9086
type redirect
keepalive type none
ip address 2.2.2.2
redirect-string "server1:9086/test.html"
active
I've seen a lot of example of using HTTP Redirects, but none of them touch on using global load balancing as we are trying to accomplish.
Now, if I type in a browser:
http://www.test.com:9086/test.html
it fails. Why? because the CSS returns back an IP of 2.2.2.2 for www.test.com, which isn't a real IP address (this is by design). If I type:
http://192.168.3.135:9086/test.html
it works because it successfully redirects to:
http://server1:9086/test.html
because it is going directly against the VIP and redirecting as it should.
So the redirect function we know is working on the CSS as expected. However, the problem is this:
When I ping www.test.com I should get back the VIP address of the content rule (192.168.3.135) and I do UNTIL I ADD THE REDIRECT TYPE to the service. Once I do that if I ping www.test.com I will get back 2.2.2.2. Somehow once the redirect is added the IP address of the service (2.2.2.2) is returned instead of the content VIP (192.168.3.135). That shouldn't happen.
I hope this makes sense and any help would be greatly appreciated!!!

I think what you want to do is explained at :
http://www.cisco.com/en/US/products/hw/contnetw/ps789/products_configuration_example09186a0080094068.shtml
For your information, you should also look at this solution :
http://www.cisco.com/en/US/products/hw/contnetw/ps789/products_configuration_example09186a00801dcd75.shtml
Regards,
Gilles.

Testing Forms Services availability with Hardware Load Balancer

I have posted a question about load balancing to a group of application services running Forms Services here on the Forms forum but have had no reply:
Forms Services availability checking for BIGIP Load Balancer
My basic questions are:
a) What do people recommend for load balancing Forms ... least connection, round robin ... ?
b) Do people use http://server:port/forms/frmservlet?ifcmd=status or have some of you used something else?
My reason for the question is we had a Forms Services failure that was not detected by the ifcmd servlet as the HTTP side of things was still working. This meant that the BIGIP load balancer sent everything to the failed server as it had the least connections. So basically no-one could logon.
I've raised an SR with Oracle but they recommend the standard URL above. Has anyone else had a problem like this and if so were you able to fix it?
Regards,
Philippe

Well SR followed up and it looks like the only course of action is to use the standard HTTP check: http://server:port/forms/frmservlet?ifcmd=status ...
... unless that is you want to do some serious customisation. Oracle don't support any other form of checking.
I'm guessing from the lack of responses to this thread that this hasn't been an issue for anybody else ... ???
Any thoughts/suggestions really welcome as we go into production in 4 weeks.
a) What do people recommend for load balancing Forms ... least connection, round robin ... ?
b) Do people use http://server:port/forms/frmservlet?ifcmd=status or have some of you used something else?
Thanks,
Philippe

11gR2 SCAN config with F5 load balancer

We are getting ready to set up our first RAC 2-node configuration. The hardware had already been purchased before deciding to go with 11gR2. Therefore, we have an F5 load balancer. The question is...can we use the IP address of the F5 in the /etc/hosts file as the SCAN IP address? Would this get us around the need to have a DNS configured SCAN host name?
Has anyone done this before?
Thanks,
Mike

Hi Mike,
Welcome to the forum.
I dont know works F5 Load Balancer.
But i'll try...
The question is...can we use the IP address of the F5 in the /etc/hosts file as the SCAN IP address?Oracle strongly recommends that you do not configure SCAN VIP addresses in the hosts file.
But if you use the hosts file to resolve SCAN name, you can have only one SCAN IP address. You will not get full functionality of the SCAN.
See this note on MOS:
*11gR2 Grid Infrastructure Single Client Access Name (SCAN) Explained [ID 887522.1]*
Would this get us around the need to have a DNS configured SCAN host name?If you want to use the SCAN feature, it is strongly recommended you use the DNS in your environment. This is my advice.
Read the note above or link below to understand how SCAN works
http://levipereira.wordpress.com/2010/12/18/single-client-access-name-scan-by-barb-lundhild/
Regards,
Levi Pereira
Please close your thread when you get the solution to your problem. 
Mark the replies answered "helpful" answer or "correct" answer that will help others with same problem. 
Thanks for doing your part to make this community as valuable as possible for everyone!

Session Stickness problem on weblogic load balancer

Hello All
I having trouble related to session stickiness for weblogic load balancing, am using httpclusterservlet on a proxy server that forward requests to 3 managed server that are members of the same cluster.
I tried to search for a solution to this problem and I found two links that are talking about the same problem but there are still not answered!!.
Here are the links:
https://forums.oracle.com/message/11158966#11158966
https://forums.oracle.com/message/11158964#11158964
Based on oracle link Using Sessions and Session Persistence, the documentation says under the "HTTP Session Properties" section that there is a change in how the sessions are formatted and this might cause a problem
for some load balancers (the documentation did not say if weblogic httpclusterservlet is one of them), I tried to do the suggested workaround and I got "java.lang.IllegalStateException: Response already committed" error same as what happens with the user in link https://forums.oracle.com/message/11158966#11158966.
Does anyone knows how to fix this??, I search for a very long time on this problem and with no luck, please help!

Hi,
Can you please give me some more information about your setup ...
Something like ...
F5/LB --> Apache or OHS --> WebLogic Cluster..
If you are using F5/OHS directly to WebLogic cluster you can try enabling the session persistence and this problem should go away..
If you are using plain Apache or OHS try putting "DynamicServerList" off.
Let me know something more about setup so that i can contribute to help ..thanks.

ACE : Stickyness problem with http cookies

Hi,
I am facing a serious problem with stickyness in a e-commerce configuration.
Here is the setup :
An ACE load balance user requests on two Apache servers
cookie-insert is used to stick a user on one Apache server
The home page is accessed via http on port 80
On the Home page, there is a link to allowing the user to login
The login process uses SSL
During the login, backend SSL is required between the ACE and the selected Apache server
The login is a POST request to the Apache server
After a successful login, the home page is reloaded on port 80 and the name of the user should appear on the top of the page
The ACE configuration :
Two sticky groups are configured : one for HTTP acess and another for HTTPS access
Two server farms are defined, both using the same real servers, but with different ports (80 and 441)
     sticky http-cookie STICKED-TO ECOM_STICKY_TEST_HTTP
       cookie insert browser-expire
       timeout 240
       replicate sticky
       serverfarm ECOM_FARM_TEST_HTTP
          sticky http-cookie STICKED-TO ECOM_STICKY_TEST_HTTPS
       cookie insert browser-expire
       timeout 240
       replicate sticky
       serverfarm ECOM_FARM_TEST_HTTPS
     serverfarm host ECOM_FARM_TEST_HTTP
       description *** e-Commerce Test Server Farm ***
       probe ECOM_PROBE_TEST
       rserver HQCHECOM01 80
        inservice
       rserver HQCHECOM02 80
        inservice
         serverfarm host ECOM_FARM_TEST_HTTPS
      description *** e-Commerce Test Server Farm ***
      probe ECOM_PROBE_TEST
      rserver HQCHECOM01 443
       inservice
      rserver HQCHECOM02 443
       inservice
The problem :
Let analyse the sequence of events and the value of the http cookie for each of them :
When the the home page is originally loaded, the ACE selects SERVER-1
The ACE inserts the cookie "A" in the server responses
The user is sticked to SERVER-1
Then, the user tries to login and an SSL session is established with the ACE
The user sends a POST request containing the cookie "A"
A backend SSL session is established with SERVER-1
The POST request is forwarded to SERVER-1
SERVER-1 responds with a 200 OK and the ACE generates another cookie "B" as it belongs to the sticky group ECOM_STICKY_TEST_HTTPS
The client browser reloads the page on port 80 and provides the cookie "B" (the last received) !!
The ACE sees the cookie "B" but does not find it in its database for the sticky group ECOM_STICKY_TEST_HTTP
The ACE perform another load balancing decision and selects SERVER-2 ! (instead of SERVER-1)
The page is reloaded, but the name of the user does not appear on it
The question :
As it is not possible to have only one sticky group in this configuration what would be the solution to make sure that the same server is selected for http and https ?
Thank you for any hints,
Yves

Hi Gilles,
I followed your recommendation to configure static cookie entries in each sticky group, but I still experience the problem of sessions getting re-load balanced to the second server when returning from HTTPS to HTTP :
It seems that the ACE ignores the static entries !
To make my question clear, I repeat hereafter the setup and the encountered problem :
Here is the setup :
An ACE load balance user requests on two Apache servers
cookie-insert is used to stick a user on one Apache server
The home page is accessed via http on port 80
On the Home page, there is a link to allowing the user to login
The login process uses SSL
During the login, backend SSL is required between the ACE and the selected Apache server
The login is a POST request to the Apache server
After a successful login, the home page is reloaded on port 80 and the name of the user should appear on the top of the page
The ACE configuration :
Two sticky groups are configured : one for HTTP acess and another for HTTPS access
Two server farms are defined, both using the same real servers, but with different ports (80 and 443)
In the ECOM_STICKY_TEST_HTTP stick group the two following cookies are automatically generated :
R105816849   for the server HQCHECOM01
R105852786   for the server HQCHECOM02
In the ECOM_STICKY_TEST_HTTPS stick group the two following cookies are automatically generated :
R355972695   for the server HQCHECOM01
R357158616   for the server HQCHECOM02
I statically configured in the each sticky group the cookies used by the other sticky group, to allow stickiness when the browser switches from HTTP to HTTPS and vice versa :
sticky http-cookie STICKED-TO ECOM_STICKY_TEST_HTTP
cookie insert browser-expire
timeout 240
replicate sticky
serverfarm ECOM_FARM_TEST_HTTP backup WEB_REDIRECT_001
56 static cookie-value "R355972695" rserver HQCHECOM01
64 static cookie-value "R357158616" rserver HQCHECOM02
sticky http-cookie STICKED-TO ECOM_STICKY_TEST_HTTPS
cookie insert browser-expire
timeout 240
replicate sticky
serverfarm ECOM_FARM_TEST_HTTPS backup WEB_REDIRECT_001
72 static cookie-value "R105816849" rserver HQCHECOM01
80 static cookie-value "R105852786" rserver HQCHECOM02
serverfarm host ECOM_FARM_TEST_HTTP
description *** e-Commerce Test Server Farm ***
probe ECOM_PROBE_TEST
rserver HQCHECOM01 80
   inservice
rserver HQCHECOM02 80
   inservice
serverfarm host ECOM_FARM_TEST_HTTPS
description *** e-Commerce Test Server Farm ***
probe ECOM_PROBE_TEST
rserver HQCHECOM01 443
   inservice
rserver HQCHECOM02 443
   inservice
The problem :
Let analyse the sequence of events and the value of the http cookie for each of them :
When the the home page is originally loaded, the ACE selects SERVER-1
The ACE inserts the cookie "A" in the server responses
The user is sticked to SERVER-1
Then, the user tries to login and an SSL session is established with the ACE
The user sends a POST request containing the cookie "A"
A backend SSL session is established with SERVER-1
The POST request is forwarded to SERVER-1
SERVER-1 responds with a 200 OK and the ACE generates another cookie "B" as it belongs to the sticky group ECOM_STICKY_TEST_HTTPS
The client browser reloads the page on port 80 and provides the cookie "B" (the last received)
The ACE sees the cookie "B" and should use the static cookie entry to select the SERVER-1
But instead, the ACE perform another load balancing decision and selects SERVER-2 !
The page is reloaded, but the name of the user does not appear on it
LiveHTTP Trace on Firefox :
GET /ecom/medias/sys_master/8800775602206/Home-page-main-banners-video.jpg HTTP/1.1
Host: ecom.test.toto.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.8) Gecko/20100202 (CK-IBM) Firefox/3.5.8
Accept: image/png,image/*;q=0.8,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://ecom.test.toto.com/uk/en/home
Cookie: STICKED-TO=R105816849;
HTTP/1.1 200 OK
Set-Cookie: STICKED-TO=R105816849; path=/
Date: Mon, 18 Oct 2010 15:31:37 GMT
Server: Apache/2.2.13 (Red Hat)
Connection: close
Transfer-Encoding: chunked
Content-Type: image/jpeg
Here we switch on HTTPS :
https://ecom.test.toto.com/uk/en/j_spring_security_check
POST /uk/en/j_spring_security_check HTTP/1.1
Host: ecom.test.toto.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.8) Gecko/20100202 (CK-IBM) Firefox/3.5.8
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://ecom.test.toto.com/uk/en/home
Cookie: STICKED-TO=R105816849; JSESSIONID=089DCF987DC03CAE0F516298EB886DAB.node1;
Content-Type: application/x-www-form-urlencoded
Content-Length: 75
spring-security-redirect=&j_username=yves144%40yahoo.com&j_password=junon01
Here we see cookie for the same server but for the HTTPS sticky group :
HTTP/1.1 302 Moved Temporarily
Set-Cookie: STICKED-TO=R355972695; path=/
Set-Cookie: _hybris.tenantID_=""; Expires=Thu, 01-Jan-1970 00:00:10 GMT; Path=/; HttpOnly
Date: Mon, 18 Oct 2010 15:31:39 GMT
Server: Apache/2.2.13 (Red Hat)
Location: http://ecom.test.toto.com/uk/en/home
Content-Length: 0
Connection: close
Content-Type: text/plain; charset=UTF-8
Here we switch back to HTTP :
http://ecom.test.toto.com/uk/en/home
GET /uk/en/home HTTP/1.1
Host: ecom.test.toto.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.8) Gecko/20100202 (CK-IBM) Firefox/3.5.8
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://ecom.test.toto.com/uk/en/home
Cookie: STICKED-TO=R355972695; JSESSIONID=089DCF987DC03CAE0F516298EB886DAB.node1;
Here we see that the second server has been wrongly selected !
HTTP/1.1 200 OK
Set-Cookie: STICKED-TO=R105852786; path=/
Set-Cookie: _hybris.tenantID_=""; Expires=Thu, 01-Jan-1970 00:00:10 GMT; Path=/; HttpOnly
Set-Cookie: JSESSIONID=5A0F6EB8FBF63D5D0590FECEC62A302E.node2; Path=/; HttpOnly
Date: Mon, 18 Oct 2010 15:31:40 GMT
Server: Apache/2.2.13 (Red Hat)
Pragma: no-cache
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Cache-Control: no-cache, no-store
Content-Language: en-GB
Connection: close
Transfer-Encoding: chunked
Content-Type: text/html;charset=UTF-8
http://ecom.test.toto.com/ecom/medias/sys_master/8796174057502/uk.gif
GET /ecom/medias/sys_master/8796174057502/uk.gif HTTP/1.1
Host: ecom.test.toto.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.8) Gecko/20100202 (CK-IBM) Firefox/3.5.8
Accept: image/png,image/*;q=0.8,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://ecom.test.toto.com/uk/en/home
Cookie: STICKED-TO=R105852786; JSESSIONID=5A0F6EB8FBF63D5D0590FECEC62A302E.node2;
HTTP/1.1 200 OK
Set-Cookie: STICKED-TO=R105852786; path=/
Date: Mon, 18 Oct 2010 15:31:40 GMT
Server: Apache/2.2.13 (Red Hat)
Content-Length: 382
Connection: close
Content-Type: image/gif
Hypothesis :
It seems that the static entries are not considered by the ACE...

Problem with XML loading and xmlns

I'm having a problem with loading an XML file that was created by Filemaker. Filemaker will output an XML file using one of two different grammars. One outputs in a mostly standard form that I can use with one glitch. Flash CS4 AS3 seems to have a problem with the xmlns in one of the nodes.
Specifically:
<FMPDSORESULT xmlns="http://www.filemaker.com/fmpdsoresult">
If I remove the xmlns="http://www.filemaker.com/fmpdsoresult" the file loads properly and I can access the various fields with no problem. However, when I leave the xmlns=... in, it will trace out the XML properly but I can't access the fields using the code listed below. This is driving me crazy!
With the xmlns part in the XML file I get the following error when it tries to load the thumbnail files:
TypeError: Error #1010: A term is undefined and has no properties.
I need to have it so that the user can enter/edit data and simply output the XML file from Filemaker and then Flash will load up the unaltered XML file and show the info requested by the user. That is to say I could have the user open the XML file in a word processing application and have them delete the xmlns..., but that is rather cumbersome and not very user friendly.
I've tried every xml.ignore function I could find but it doesn't help. Hopefully someone out there can help
Thanks,
-Mark-
Partial XML:
XML From Filemaker Export:
<?xml version="1.0" encoding="UTF-8" ?>

<FMPDSORESULT xmlns="http://www.filemaker.com/fmpdsoresult">
<ERRORCODE>0</ERRORCODE>
<DATABASE>Sport.fp7</DATABASE>
<LAYOUT></LAYOUT>
<ROW MODID="1" RECORDID="1">
 <FirstName>Mark</FirstName>
 <LastName>Fowle</LastName>
 <Sport>Sailing</Sport>
 <Medal>None</Medal>
 <CourseOfStudy>Design</CourseOfStudy>
 <Year>1976-1978</Year>
 <HomeState>California</HomeState>
 <ImageName>93</ImageName>
</ROW>
</FMPDSORESULT>
AS3 Code:
import fl.containers.UILoader;
var aPhoto:Array=new Array(ldPhoto_0,ldPhoto_1,ldPhoto_2,ldPhoto_3,ldPhoto_4,ldPhoto_5);
var toSet:int=10;//time out set time
var toTime:int=toSet;
var photoPerPage:int=6;
var fromPos:int=photoPerPage;
var imgNum:Number;
//var subjectURL:URLRequest=new URLRequest("testData_FM8.xml");
var subjectURL:URLRequest=new URLRequest("Sports.xml");
var xmlLoader:URLLoader=new URLLoader(subjectURL);
xmlLoader.addEventListener(Event.COMPLETE, xmlLoaded);
var subjectXML:XML = new XML();
subjectXML.ignoreWhitespace=true;
subjectXML.ignoreComments=true;
subjectXML.ignoreProcessingInstructions=true;
function xmlLoaded(evt:Event):void {
 subjectXML=XML(xmlLoader.data);
 if (root.loaderInfo.bytesTotal==root.loaderInfo.bytesLoaded) {
 removeEventListener(Event.ENTER_FRAME, xmlLoaded);
 trace("XML Data File Loaded");
 trace(subjectXML);
 } else {
 trace("File not Found");
 imgNum=2;//subjectXML.ROW.length;
 trace(subjectXML);
 loadThumb(0);
function loadThumb(startPos:int):void {
 var count:Number=aPhoto.length;
 trace(subjectXML.DATABASE);
 for (var i=0; i<count; i++) {
 try{
 aPhoto[i].source="images/"+subjectXML.ROW[startPos+i].ImageName+"_main.jpg";
 }catch (e:Error){
 trace(e);
 aPhoto[i].mouseChildren=false;
 aPhoto[i].addEventListener(MouseEvent.MOUSE_DOWN, onThumbClick);
 trace("Current mem: " + System.totalMemory);
 ldAttract.visible=false;
function unloadThumb():void {
 var count:Number=aPhoto.length;
 for (var i=0; i<count; i++) {
 aPhoto[i].unload();
 aPhoto[i].removeEventListener(MouseEvent.MOUSE_DOWN, onThumbClick);
 trace("Current mem: " + System.totalMemory);
function onThumbClick(evt:MouseEvent) {
 var i:Number;
 //trace("Thumbnail Clicked " + evt.target.name);
 i=findPos(evt.target.name);
 ldLrgPhoto.source="images/"+subjectXML.ROW[i+fromPos].LOCAL_OBJECT_ID+"_main.jpg";
 ldLrgPhoto.visible=true;
 btnPrev.visible=false;
 btnNext.visible=false;
 gotoAndStop("showPhoto");
function findPos(thumb:String):Number {
 var pos:Number;
 var count:Number=aPhoto.length;
 for (var i:Number=0; i<count; i++) {
 if (thumb==aPhoto[i].name) {
 pos=i;
 return pos;

Hi,
I was trying to use xml namespaces, so in my application I receive an XML file from the server. The file has a namespace, so when I parse the file I need to specify the namespace:
I got the following piece of xml:
<ls:exchange xmlns:ls=".../tsw" xmlns:tm="http://kxa">
 <ls:projects>
 <tm:annotation id="" date="" action="getprojects" status="responseok"/>
 <ls:project id="" name="proj" description="..." owner="asss" release="2" />
 <ls:projectV id="" version="" creationdate="" modificationdate=""/ >
 </ls:project>
</ls:projects>
</ls:exchange>
and the following code
<mx:VBox label="WELCOME" verticalScrollPolicy="off" horizontalScrollPolicy="off">
 <mx:Tree id="tree" dataProvider="{srv.lastResult.project}" labelField="@name" width="300" height="100%" itemOpen="itemOpenEvt(event);" />
</mx:VBox>
So i want to display the content of the xml (project nodes”) in a tree view, but i don’t know how to includes the namespace"ls:" in the data provider “srv.lastResult.project”. can u help me it’s urgent.
sincerly
Celine

Cache refresh issue with PI Load Balanced HA setup.

Dear Experts,
Wei have installed a HA Load Balanced PI Production Server with the below specifications. Its a four node cluster. Two nodes for Application Cluster and another two nodes for Database Cluster.
Node1
Physical Hostname : axsappci
Virtual Hostname : axsapp00
Instances         : CI,SCS and ASCS.
Node2
Physical Hostname : axsappdi
Virtual Hostname   : axsapp00
Instances          : Dialog instance installed with physical hostname axsappdi
Node3
Physical Hostname : axsappd1
Virtual Hostname   : axsappdb
Instances : DB Instance.
Node4
Physical Hostname : axsappd2
Virtual Hostname   : axsappdb
Instances : Standby DB Instance (passive).
Web Dispatcher Hostname : h2h
Application Switchover : CI,SCS and ASCS to switchover to Node2 and dialog instance Node2 forcing to go down
Database Switchover : DB Instance switchover to Node2 if Node1 fails.
We have changed all the parameters according to note 951910 -> NW2004s High Availability Usage Type PI
I am facing an issue with the cache Notifications in the Integration Repository and Directory. The cache notifications are not happening properly particularly with the ABAP Cache.
I get the below error in my ID when i try to do the manual cache notification.
Unable to notify integration runtime (ABAP) of data changes
Unable to establish http connection "http://h2h:8002/sap/xi/cache?sap-
client=001"
Kindly assist.
Thanks and Regards
Raghu.

Hi Srikanth,
Thanks for the reply.
I have configured my web disptacher to use default HTTP and HTTPS ports i.e 80 and 443. According to note 951910 i have changed parameters in exchange profile to use these ports.
Regards
Raghu.

Best way for HTTP load balancing in OSB

Hi everybody,
We have setup an OSB cluster and we need to load balance HTTP requests across managed servers. Looking for info about load balancing in OSB I found that there are mainly two options: using a hardware load balancer or a software solution like Weblogic HttpClusterServlet. At the moment we have no hardware balancer available so we will have to take the software option. I found some articles about configuring HttpClusterServlet like http://redstack.wordpress.com/2010/12/20/using-weblogic-as-a-load-balancer.
But I have a question about this configuration. If we use a managed server as an HTTP proxy that balances requests between OSB managed servers, what would happen if this server goes down? I think one of the main goals of a clustered deployment is avoiding a single point of failure but with that setup all requests would depend on the availability of the proxy managed server.
Could you recommend us a setup for implementing load balancing in OSB?
Thank you in advance,
Daniel.

Load balancing in a cluster for http requests can be achieved using atleast 4 different ways:
(1)- use a hardware load balancer like F5 BigIP LTM
(2)- use a web server with weblogic plugin to frontend the cluster
(3)- use weblogic with HTTPClusterServlet
(4)- use DNS round robin - this works if you have managed servers running on 2 machines (say mach1, mach2) but on the same port. HTTP clients use hostname 'mach' to access the URL's and the dns does a round robin name resolution of mach to mach 1 and mach2 IP addresses..
All the options except (1) achieve only load balancing and not auto failover on all instances.. Hardware load balancers has the extra feature of probing [ sending periodic pings to the targets] , by which it can detect whether the target resource is alive and if not send the traffic to other nodes which are alive.. this is why hardware load balancers are worth their investment..
other options may work if client is coded to do retrying on failure.. so on 2nd or subsequent attempt, the routing is done to the machine which is alive..
For options (1),(2) and (3), you also need some redundancy of load balancing device ( web server, weblogic or hardware load balancer) to prevent single point of failure.. Hardware load balancers are usually deployed in redundant pairs to achieve this..
Edited by: atheek1 on 22/11/2011 15:31

Problem with HTTP load balancing

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