ACE balancing problems

Hi everyone.
We have a customer who has a server farm formed by 3 servers with the following real ip address:
10.10.24.5-6-7 and a virtual 10.10.24.3 as configured in the ace module.
We found the following behavior in the session number of the servers. We can conclude that there is a server with much more sessions than the others (10.10.24.6):
Can sombody help me telling why can happen that?
I am attaching the ACE config as a reference
Thanks
ACE-DIGENERAL/OCS# sh serverfarm Herramientas_Col
serverfarm     : Herramientas_Col, type: HOST
total rservers : 3
                                                ----------connections-----------
       real                  weight state        current    total
   ---+---------------------+------+------------+----------+--------------------
   rserver: SP1
       10.10.24.5:0          8      OPERATIONAL 390         296043280
   rserver: SP2
       10.10.24.6:0          8      OPERATIONAL 1003        3371471400
   rserver: SP3
       10.10.24.7:0          8      OPERATIONAL 354         164816790
Como se puede observar el sever 10.10.24.6 posee mas del doble de conexiones que los otros 2.
5.       En el siguiente pantallazo también se observan conexiones detalladas y los puertos por donde habla:
ACE-DIGENERAL/OCS# sh conn serverfarm Herramientas_Col
conn-id    np dir proto vlan source                destination           state
----------+--+---+-----+----+---------------------+---------------------+------+
70         1 in TCP   951 10.10.22.13:3837      10.10.24.3:80         ESTAB
17239      1 out TCP   324 10.10.24.7:80         10.10.22.13:3837      ESTAB
76         1 in TCP   951 10.83.21.32:1419      10.10.24.3:80         ESTAB
5531       1 out TCP   324 10.10.24.6:80         10.83.21.32:1419      ESTAB
95         1 in TCP   951 10.20.7.51:1702       10.10.24.3:80         ESTAB
16237      1 out TCP   324 10.10.24.6:80         10.20.7.51:1702       ESTAB
98         1 in TCP   951 10.80.31.55:3188      10.10.24.3:80         ESTAB
11995      1 out TCP   324 10.10.24.6:80         10.80.31.55:3188      ESTAB
32749      1 in TCP   951 10.80.21.23:1926      10.10.24.3:80         ESTAB
108        1 out TCP   324 10.10.24.7:80         10.80.21.23:1926      ESTAB
110        1 in TCP   951 10.25.14.231:1705     10.10.24.3:80         ESTAB
37994      1 out TCP   324 10.10.24.6:80         10.25.14.231:1705     ESTAB
7438       1 in TCP   951 10.31.102.32:2329     10.10.24.3:80         ESTAB
141        1 out TCP   324 10.10.24.7:80         10.31.102.32:2329     ESTAB
31247      1 in TCP   951 10.81.36.32:1650      10.10.24.3:80         ESTAB
151        1 out TCP   324 10.10.24.5:80         10.81.36.32:1650      ESTAB
176        1 in TCP   951 10.20.208.124:2598    10.10.24.3:80         ESTAB
13219      1 out TCP   324 10.10.24.7:80         10.20.208.124:2598    ESTAB
32576      1 in TCP   951 10.233.9.40:1577      10.10.24.3:80         ESTAB
233        1 out TCP   324 10.10.24.6:80         10.233.9.40:1577      ESTAB
27499      1 in TCP   951 10.218.16.28:2902     10.10.24.3:80         ESTAB
244        1 out TCP   324 10.10.24.5:80         10.218.16.28:2902     ESTAB
248        1 in TCP   951 10.85.19.55:1540      10.10.24.3:80         ESTAB
14014      1 out TCP   324 10.10.24.7:80         10.85.19.55:1540      ESTAB
27166      1 in TCP   951 10.25.22.90:1766      10.10.24.3:80         ESTAB
254        1 out TCP   324 10.10.24.6:80         10.25.22.90:1766      ESTAB
380        1 in TCP   951 10.23.22.62:1855      10.10.24.3:80         ESTAB
11563      1 out TCP   324 10.10.24.6:80         10.23.22.62:1855      ESTAB
397        1 in TCP   951 10.212.35.30:1540     10.10.24.3:80         ESTAB
15491      1 out TCP   324 10.10.24.7:80         10.212.35.30:1540     ESTAB
35588      1 in TCP   951 10.100.30.5:1773      10.10.24.3:80         ESTAB
405        1 out TCP   324 10.10.24.6:80         10.100.30.5:1773      ESTAB
31392      1 in TCP   951 10.216.27.41:1524     10.10.24.3:80         ESTAB
449        1 out TCP   324 10.10.24.6:80         10.216.27.41:1524     ESTAB
592        1 in TCP   951 10.25.21.219:1364     10.10.24.3:80         ESTAB
2988       1 out TCP   324 10.10.24.5:80         10.25.21.219:1364     ESTAB
614        1 in TCP   951 10.25.42.221:1517     10.10.24.3:80         ESTAB
18877      1 out TCP   324 10.10.24.6:80         10.25.42.221:1517     ESTAB
21553      1 in TCP   951 10.80.39.123:1634     10.10.24.3:80         ESTAB
652        1 out TCP   324 10.10.24.6:80         10.80.39.123:1634     ESTAB
13640      1 in TCP   951 10.206.2.34:1385      10.10.24.3:80         ESTAB
708        1 out TCP   324 10.10.24.6:80         10.206.2.34:1385      ESTAB
26959      1 in TCP   951 10.100.30.7:1289      10.10.24.3:80         ESTAB
719        1 out TCP   324 10.10.24.5:80         10.100.30.7:1289      ESTAB
29277      1 in TCP   951 10.100.202.50:1248    10.10.24.3:80         ESTAB
758        1 out TCP   324 10.10.24.5:80         10.100.202.50:1248    ESTAB
6185       1 in TCP   951 10.25.27.222:1497     10.10.24.3:80         ESTAB
760        1 out TCP   324 10.10.24.6:80         10.25.27.222:1497     ESTAB
767        1 in TCP   951 10.97.21.28:1821      10.10.24.3:80         ESTAB
23511      1 out TCP   324 10.10.24.7:80         10.97.21.28:1821      ESTAB
826        1 in TCP   951 10.31.105.140:3810    10.10.24.3:80         ESTAB
13460      1 out TCP   324 10.10.24.6:80         10.31.105.140:3810    ESTAB
21987      1 in TCP   951 10.25.31.213:1855     10.10.24.3:80         ESTAB
839        1 out TCP   324 10.10.24.5:80         10.25.31.213:1855     ESTAB
874        1 in TCP   951 10.88.29.27:1503      10.10.24.3:80         ESTAB
29839      1 out TCP   324 10.10.24.6:80         10.88.29.27:1503      ESTAB
945        1 in TCP   951 10.27.122.13:1286     10.10.24.3:80         ESTAB
32298      1 out TCP   324 10.10.24.6:80         10.27.122.13:1286     ESTAB
24330      1 in TCP   951 10.40.21.50:2368      10.10.24.3:80         ESTAB
954        1 out TCP   324 10.10.24.6:80         10.40.21.50:2368      ESTAB
961        1 in TCP   951 10.80.26.76:1414      10.10.24.3:80         ESTAB
11176      1 out TCP   324 10.10.24.5:80         10.80.26.76:1414      ESTAB
28989      1 in TCP   951 10.91.22.38:1408      10.10.24.3:80         ESTAB
985        1 out TCP   324 10.10.24.5:80         10.91.22.38:1408      ESTAB
1006       1 in TCP   951 10.217.4.20:1522      10.10.24.3:80         ESTAB
26946      1 out TCP   324 10.10.24.5:80         10.217.4.20:1522      ESTAB
8360       1 in TCP   951 10.11.3.28:1679       10.10.24.3:80         ESTAB
1020       1 out TCP   324 10.10.24.6:80         10.11.3.28:1679       ESTAB
9498       1 in TCP   951 10.25.42.221:1519     10.10.24.3:80         ESTAB
1031       1 out TCP   324 10.10.24.6:80         10.25.42.221:1519     ESTAB
18510      1 in TCP   951 10.165.55.51:1232     10.10.24.3:80         ESTAB
1072       1 out TCP   324 10.10.24.7:80         10.165.55.51:1232     ESTAB
5583       1 in TCP   951 10.25.14.12:2086      10.10.24.3:80         ESTAB
1142       1 out TCP   324 10.10.24.6:80         10.25.14.12:2086      ESTAB
39713      1 in TCP   951 10.25.36.58:1663      10.10.24.3:80         ESTAB
1144       1 out TCP   324 10.10.24.7:80         10.25.36.58:1663      ESTAB
8601       1 in TCP   951 10.217.26.34:1677     10.10.24.3:80         ESTAB
1167       1 out TCP   324 10.10.24.6:80         10.217.26.34:1677     ESTAB
17209      1 in TCP   951 10.165.40.45:1526     10.10.24.3:80         ESTAB
1173       1 out TCP   324 10.10.24.5:80         10.165.40.45:1526     ESTAB
18708      1 in TCP   951 10.31.105.137:3714    10.10.24.3:80         ESTAB
1175       1 out TCP   324 10.10.24.6:80         10.31.105.137:3714    ESTAB
1180       1 in TCP   951 10.201.18.40:4777     10.10.24.3:80         ESTAB
6528       1 out TCP   324 10.10.24.6:80         10.201.18.40:4777     ESTAB
1214       1 in TCP   951 10.31.104.46:1501     10.10.24.3:80         ESTAB
5924       1 out TCP   324 10.10.24.6:80         10.31.104.46:1501     ESTAB
1228       1 in TCP   951 10.231.37.32:1161     10.10.24.3:80         ESTAB
15171      1 out TCP   324 10.10.24.6:80         10.231.37.32:1161     ESTAB
28431      1 in TCP   951 10.25.5.76:2317       10.10.24.3:80         ESTAB
1293       1 out TCP   324 10.10.24.5:80         10.25.5.76:2317       ESTAB
1328       1 in TCP   951 10.201.2.26:1293      10.10.24.3:80         ESTAB
19276      1 out TCP   324 10.10.24.7:80         10.201.2.26:1293      ESTAB
1356       1 in TCP   951 10.80.23.27:1396      10.10.24.3:80         ESTAB
4141       1 out TCP   324 10.10.24.6:80         10.80.23.27:1396      ESTAB
1368       1 in TCP   951 10.80.36.124:1428     10.10.24.3:80         ESTAB
19905      1 out TCP   324 10.10.24.6:80         10.80.36.124:1428     ESTAB
30280      1 in TCP   951 10.25.8.11:4836       10.10.24.3:80         ESTAB
1438       1 out TCP   324 10.10.24.6:80         10.25.8.11:4836       ESTAB
1478       1 in TCP   951 10.216.6.46:4153      10.10.24.3:80         ESTAB
12312      1 out TCP   324 10.10.24.6:80         10.216.6.46:4153      ESTAB
23389      1 in TCP   951 10.211.30.38:1593     10.10.24.3:80         ESTAB
1527       1 out TCP   324 10.10.24.6:80         10.211.30.38:1593     ESTAB
1562       1 in TCP   951 10.90.21.58:2889      10.10.24.3:80         ESTAB
36398      1 out TCP   324 10.10.24.7:80         10.90.21.58:2889      ESTAB
1587       1 in TCP   951 10.84.22.29:2121      10.10.24.3:80         ESTAB
37031      1 out TCP   324 10.10.24.6:80         10.84.22.29:2121      ESTAB
1624       1 in TCP   951 10.25.21.218:1465     10.10.24.3:80         ESTAB
4941       1 out TCP   324 10.10.24.6:80         10.25.21.218:1465     ESTAB

Hello!
A "show connection serverfarm Herramientas_Col detail" and "show sticky database group POOL3" would be handy in this situation. You have sticky configured which will intentionally throw off the loadbalancing predictor. My guess at this point is that rserver SP2 might not close connections in the same manner that SP1 and SP3 do. If that was true, that would result in a longer connection time, which means the sticky database would not idle out as fast, hence more connection for SP2.
Regards,
Chris

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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Realized the configuration as specified in the link.
Apparently, everything ok.
However, I can not access the page using internet explorer. I tested with firefox, safari, opera, everything works with internet explorer not.
Configuration follows below, is something wrong?
Thanks.
serverfarm host SF-HIAE-NFUSE
description Servidores nfuse.einstein.br
rserver WPVAP06
    inservice
rserver WPVAP07
    inservice
parameter-map type generic sslidparam
   set max-parse-length 70
sticky layer4-payload STICK-L4-NFUSE-SSL
serverfarm SF-HIAE-TESTESSLTERM
response sticky
layer4-payload offset 43 length 32 begin-pattern "\x20"
class-map match-all VS-L4-NFUSE-SSL-TERMINATOR
2 match virtual-address 192.168.16.254 tcp eq https
policy-map type loadbalance generic first-match VS-HIAE-TESTESSLTERM
class class-default
    sticky-serverfarm STICK-L4-NFUSE-SSL
policy-map multi-match int10
class VS-L4-NFUSE-SSL-TERMINATOR
   loadbalance vip inservice
   loadbalance policy VS-HIAE-TESTESSLTERM
   loadbalance vip icmp-reply active primary-inservice
   appl-parameter generic advanced-options sslidparam

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...

Wgate Load Balancing Problem

Hi Folks,
We have ITS 6.20 Patch level 33 installed which connects to our R/3 system. We are trying to add multiple Agate servers (not multiple Agate processes) to one Wgate. We installed agates on two hosts, host1 and host2. We then installed wgate on host1 which we connected during the time of installation to agate on host2. It connected fine and we were able to get the webgui and also able to login to R/3 system. At that time we had problem in going to native ADM instance as we were getting http 500 error (we had re-installed ADM instance on both the hosts after the whole exercise of installating agate and wgate). Hoping that we can solve native ADM problem later, we added the the second agate which is on hosts1(the same host on which wgate is) by adding the entry for agate 2 in the wgate registry xml file.
<key name="Agates">
      <key name="Agate1">
       <value name="Host" type="text">host2</value>
       <value name="PortAGate" type="text">sapavw00_******</value>
       <value name="PortMManager" type="text">sapavwmm_******</value>
       <value name="Type" type="text">1</value>
       <value name="SncNameAGate" type="text"/>
       <value name="SncNameWGate" type="text"/>
       <value name="MultiProcess" type="text">no</value>
       <value name="Available" type="text">yes</value>
      </key>
      <key name="Agate2">
       <value name="Host" type="text">host1</value>
       <value name="PortAGate" type="text">sapavw00_******</value>
       <value name="PortMManager" type="text">sapavwmm_******</value>
       <value name="Type" type="text">1</value>
       <value name="SncNameAGate" type="text"/>
       <value name="SncNameWGate" type="text"/>
       <value name="MultiProcess" type="text">no</value>
       <value name="Available" type="text">yes</value>
      </key>
The second agate added fine and is doing load balancing as well as we can see requests getting routed to both the agate in the load balancing screen. However we are not able to access the global.srvc file under configuration->Performance->global services->All settings as we are getting the following message:
Error loading service file "global.srvc"!
Also when we go to services under configuration, we are getting a message "error accessing services directory!"
In default R/3 system also all the fields are empty although we had given the application server details while installing both the agates.
We are getting the below messages in diagnostics.log file:
2010-11-22T12:30:04.401 --- log opened -
A 2010-11-23T13:55:53.346 [agate,sapdiag ] 00, s00000000061DB140, CsRead returned rd=-100
2010-11-23T14:17:06.863 --- log closed -
2010-11-23T14:17:07.753 --- log opened -
A 2010-11-23T14:30:48.618 [agate,sapdiag ] 00, s00000000061DB220, Cannot handle request from login
A 2010-11-23T14:38:45.615 [agate,        ] 00, s0000000000000000, WorkDoGetReq: ContReceiveContainer() failed, rc=0xffffffff
A 2010-11-23T14:38:45.615 [agate,        ] 00, s0000000000000000, WorkDoWork: WorkDoGetReq() failed, rc=0xffffffff
A 2010-11-23T14:38:45.677 [agate,sapxgdk ] 00, s0000000000000000, ContSendContainer: FAILED, send length is 0
A 2010-11-23T14:38:50.958 [agate,        ] 00, s0000000000000000, WorkDoGetReq: ContReceiveContainer() failed, rc=0xffffffff
A 2010-11-23T14:38:50.958 [agate,        ] 00, s0000000000000000, WorkDoWork: WorkDoGetReq() failed, rc=0xffffffff
A 2010-11-23T14:38:50.974 [agate,sapxgdk ] 00, s0000000000000000, ContSendContainer: FAILED, send length is 0
Please let me know if this procedure of adding the agate was wrong or there are some parameter settings that we may have missed. Would it have been better to go for a single host wgate+agate installation on host1 and then add agate2 on host2?

Hi Edgar,
Thanks for the reply. I had re-installed ADM instance on both the hosts after the whole exercise of installing agate and wgate.
Anyways, Now we have uninstalled the earlier instances on both hosts and installed wgate+agate on host1 as a single host installation and agate2 on host2. Then we added agate2 to wgate1 and load balancing is working fine. Now the issue of not being able to access the service file and directories, etc has also been resolved. The only problem that remains is that we are not able to go into the native ADM. We get a http 500 error, although the redirect URL is correct. Is the any additional setting required for that to happen?

Load balancing problem

We need a load balancing setup that share the load for many web applications on multiple backend servers, but we don’t want the web apps to be activated on all backend servers at the same time. We want to configure all apps as “lazy” on all backend servers. They will then be activated when the first request to their DNS is made. Then the app is started on that backend server.
We have hundreds of apps and each backend server will become very slow if all apps are activated on all backend servers. The preferred solution would therefore be to not call all DNS names on all backend servers but to share the balance based on the DNS name in the requests. Sticky-session or sticky source-IP won’t be enough to solve this as they only stick to each user session.
If User-A request www.siteA.com he may be redirected to backend server 1 and then be kept there. But if User-B then requests the same www.siteA.com he may be redirected to backend server 2 and then be kept there. This means that the web application for siteA will be activated and loaded in both the backend servers. When we host hundreds of sites this will be a problem. We may have hundreds of backend servers but they will all end up loading all web apps over time and get out of memory.
The theory to get this work is a load balancer with the following logic:
1.     A request for a certain DNS comes in. For example: www.siteA.com
2.     Load balancer checks if this certain DNS has been redirected to a certain backend server before and if this server is alive
2.1.     (If not redirected before): Redirect the request to the backend server with least load. Store the selected backend route based on the DNS name.
2.2.     (If redirected before): Redirect the request to the assigned backend server for siteA.
3.     If a backend server is down then all DNS requests to this server will be redirected to another backend server with least load. All requests to these DNS names will be assigned to this backend server instead.
h3. Example of set up
Many DNS to one IP
192.168.1.1 www.siteA.com
192.168.1.1 www.siteB.com
192.168.1.1 www.siteC.com
Frontend load balancer
192.168.1.1 (load balancer)
Backend app servers
192.168.2.2 (App server 1)
192.168.2.3 (App server 2)
192.168.2.4 (App server 3)
h3. Snapshot of servers during load
App server 1
www.siteA.com (Activated)
www.siteB.com (Lazy)
www.siteC.com (Lazy)
App server 2
www.siteA.com (Lazy)
www.siteB.com (Activated)
www.siteC.com (Lazy)
App server 3
www.siteA.com (Lazy)
www.siteB.com (Lazy)
www.siteC.com (Activated)

Only from load balancing point of view cluster is not really needed.
apart from session replication and failover capabilities, few more benefits are there with clustering only if you are using a web server also.
Stuck threads can be due to lot's of problems like application issues, load issues etc, So first make sure you are getting stuck thread on both servers or only on one, if on one, then in this case your load balancing not working properly and sending more load to that server, and if you are getting stuck threads on both then try to add one more managed server.
Regards
Mukesh Negi
http://weblogicserveradministration.blogspot.com

Load Balance Problem in Oracle RAC 10.2.0.4 (two nodes with CRS)

Hi all,
I have an Oracle RAC 10.2.0.4 with two nodes and I'm having problems with sessions load balance.
The problem is that all connections are going to the node which is enabled as 'master' in RAC, the node who has located .db resource in CRS.
If .db resource is located in node1 all connections are made in node1. In the same way, all connections are made in node2 when .db resource from CRS stack is located in node2.
The connections are made by a pool in Tomcat 6 using RAC service for made the connections.
Any idea?
Thanks in advance.
Here is an example of my net configuration:
listener.ora in node1:
LISTENER_RAC_NODE1 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = node1_vip)(PORT = 1525)(IP = FIRST))
(ADDRESS = (PROTOCOL = TCP)(HOST = node1)(PORT = 1525)(IP = FIRST))
tnsnames in node1:
LISTENERS_RAC =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = node1_vip)(PORT = 1525))
(ADDRESS = (PROTOCOL = TCP)(HOST = node2_vip)(PORT = 1525))
NODE1 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = node1_vip)(PORT = 1525))
(ADDRESS = (PROTOCOL = TCP)(HOST = node1)(PORT = 1525))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = rac)
(INSTANCE_NAME = rac1)
RAC =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = node1_vip)(PORT = 1525))
(ADDRESS = (PROTOCOL = TCP)(HOST = node2_vip)(PORT = 1525))
(LOAD_BALANCE = yes)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = rac)
********************************************************

It is my fault.
It was the connection service. I had one one with preferred option and one without it. Now is working well.

Trail balance with legacy balances problem

Hi Experts,
Need yours input for me on trail balance amounts mismatch with Legacy system.
My client using the both systems legacy and sap.
Now client taking the reports from legacy for the legal submissions for this year08-09.
I have done matching each GL with Legacy GL. Some of them were talied and rest of not talied.
this includes recon a/c also.
for the expenses accounts i can make JV postings, but the problem is how to make postings
to the recon accounts.(customers, vendors etc)
we are here having a huge transactions and client doesnt want to dig out all each and every.
client wants to make the JVs differed figure for account heads instead of dig all.
please let me know the easy way or t.codes to adjust the figures in various accounts for trail balance.
Regards,
Soma

Hi,
My sincere advise is not just to go by an easy way..
Understand where there is a gap and why there is a gap, vendor wise for AP and customer wise in AR..
Then try posting the difference amounts into these accounts as you have done in the first case..
This is a little time consuming job but thats the best way. Dont just post the differences as tommorow reconciliation would be a problem.
Cheers
Redoxcube

Trail Balance problem

Sir,
My total Debit side & Credit side of Trail Balance is having some difference when i generating 1 day Trail Balance
how to rectify this or track this
Regards & Thanks
Rajesh B K

Thanks all Experts i good sol to my problem
i.e actually i m creating TB Templete with coreleated GL Acc missing when i run TB with Chart of Account
the result is fruitfull
once again thanks all of you
Regards
Rajesh B K

CSS load balancing problem

Hi,
I have two CSS that I use to load balance RDP connections to two WTS servers. I dont have switch behind CSS so they are connected back-to-back via cable. All server facing ports (including back-to-back ports) are in the same VLAN.
CSS1 is primary for the VIP address and for redundant interface address, and CSS2 is standby.
So, when I connect WTS-1 to CSS-1 and WTS-2 to CSS-2, CSS1 sees both services as active and everything seems fine. If WTS-2 is disconnected, WTS2 service on CSS1 is down etc.
In sticky table, I can see that CSS1 is load balancing request to both servers, but the problem is that only RDP connections to WTS-1(server directly connected to CSS1) work fine , and connections that are load balanced to WTS-2 are dropped??? Direct RDP connection to WTS-2 IP works fine.
If I connect WTS-2 to CSS1, so both WTS servers are connected to CSS1 everything works fine.
Can anyone tell what can be wrong?
Configurations are in the attachment.
Thanks for help.
Regards,
Branimir

try the command 'ip uncond' on both CSS.
It will guarantees that the response from WTS-2 comes back to CSS1.
Gilles.

Oracle RAC - Load Balancing Problem

Our J2EE application transactions (Container-managed) are using MULTIPLE database connections to complete one business transaction.
Recently we swiched to below Oracle RAC configuration, and it is creating problems.
BEA 8.1 SP5 Multi Pools
Oracle 9i RAC (2 instances) : Active - Active
Algorithm : Load Balancing
Driver (JDBC) : Oracle 10g Release 1 Thin Driver
non-XA transactions
Looks like when LB algorithm is chosen, the load balacing is only **connection-aware** and NOT **transaction-aware**. Because of this, the application gets one connection from one RAC instance, and other from other instance is creating problems.
Is there any work-around exist for this problem?
If we chose, HIGH_AVAILABILTY algorithm, everything is fine. But we would like to make use of both instances.

Srinivas Chintala wrote:
Hello Joe,
Here is the configuration:
<JDBCConnectionPool DriverName="oracle.jdbc.OracleDriver"
InitialCapacity="10" MaxCapacity="30" Name="rac_node1"
PasswordEncrypted="{3DES}5M6WvgV8GsA=" Properties="user=apps"
StatementCacheSize="20" Targets="app_cluster"
TestConnectionsOnCreate="true" TestConnectionsOnRelease="true"
TestConnectionsOnReserve="true"
TestTableName="SQL SELECT 1 FROM DUAL" URL="jdbc:oracle:thin:@usplgmnvmdb001.iweb.com:1521:prod_1"/>
<JDBCConnectionPool DriverName="oracle.jdbc.OracleDriver"
InitialCapacity="10" MaxCapacity="30" Name="rac_node2"
PasswordEncrypted="{3DES}5M6WvgV8GsA=" Properties="user=apps"
StatementCacheSize="20" Targets="app_cluster"
TestConnectionsOnCreate="true" TestConnectionsOnRelease="true"
TestConnectionsOnReserve="true"
TestTableName="SQL SELECT 1 FROM DUAL" URL="jdbc:oracle:thin:@usplgmnvmdb002.iweb.com:1521:prod_2"/>
<JDBCMultiPool AlgorithmType="Load-Balancing" Name="appmutlipool"
PoolList="rac_node1,rac_node2" Targets="app_cluster"/>
<JDBCDataSource JNDIName="appdatasource" Name="AppDatasource"
PoolName="appmutlipool" Targets="app_cluster"/>
ChintalaHi, OK, that looks fine, except:
1 - I would define the initial and max capacity = 30, for performance and stability.
2 - For more performance, turn off test-on-release. It's a waste of cycles.
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

Weblogic DB connection pool load balancing problem

hi all,
here is a strange issue. We have a clustered weblogic environment with2 servers. And the application is deployed to cluster. But strangely when we check the active connections for the connection pool that is being used by the application, we see that 2nd server has more connections when compared to 1st server, lets say 1st server has 4 active connections, 2nd server has 50 connections, What might be the problem.
<?xml version='1.0' encoding='UTF-8'?>
<jdbc-data-source xmlns="http://www.bea.com/ns/weblogic/jdbc-data-source" xmlns:sec="http://www.bea.com/ns/weblogic/90/security" xmlns:wls="http://www.bea.com/ns/weblogic/90/security/wls" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.bea.com/ns/weblogic/jdbc-data-source http://www.bea.com/ns/weblogic/jdbc-data-source/1.0/jdbc-data-source.xsd">
<name>##########</name>
<jdbc-driver-params>
<url>jdbc:oracle:thin:@hostname:portnumber:Schema</url>
<driver-name>oracle.jdbc.OracleDriver</driver-name>
<properties>
<property>
<name>user</name>
<value>#####</value>
</property>
<property>
<name>portNumber</name>
<value>#####</value>
</property>
<property>
<name>SID</name>
<value>######</value>
</property>
<property>
<name>serverName</name>
<value>hostname</value>
</property>
</properties>
<password-encrypted>##########</password-encrypted>
<use-xa-data-source-interface>false</use-xa-data-source-interface>
</jdbc-driver-params>
<jdbc-connection-pool-params>
<initial-capacity>0</initial-capacity>
<max-capacity>75</max-capacity>
<capacity-increment>5</capacity-increment>
<shrink-frequency-seconds>900</shrink-frequency-seconds>
<highest-num-waiters>2147483647</highest-num-waiters>
<connection-creation-retry-frequency-seconds>0</connection-creation-retry-frequency-seconds>
<connection-reserve-timeout-seconds>10</connection-reserve-timeout-seconds>
<test-frequency-seconds>60</test-frequency-seconds>
<test-connections-on-reserve>true</test-connections-on-reserve>
<profile-harvest-frequency-seconds>300</profile-harvest-frequency-seconds>
<ignore-in-use-connections-enabled>true</ignore-in-use-connections-enabled>
<inactive-connection-timeout-seconds>0</inactive-connection-timeout-seconds>
<test-table-name>SQL SELECT 1 FROM DUAL</test-table-name>
<login-delay-seconds>0</login-delay-seconds>
<statement-cache-size>10</statement-cache-size>
<statement-cache-type>LRU</statement-cache-type>
<remove-infected-connections>true</remove-infected-connections>
<seconds-to-trust-an-idle-pool-connection>10</seconds-to-trust-an-idle-pool-connection>
<statement-timeout>-1</statement-timeout>
<profile-type>0</profile-type>
<pinned-to-thread>false</pinned-to-thread>
</jdbc-connection-pool-params>
<jdbc-data-source-params>
<jndi-name>##########</jndi-name>
</jdbc-data-source-params>
</jdbc-data-source>

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

Printer Pool load balancing problem.

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

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

HttpClusterServlet Load Balancing Problem

          Hi,
          I have a problem with LoadBalancing and HttpClusterServlet.
          I have 2 boxes, with a clustered application, deployed on 2 managed servers
          box 1 with adminServer and and a managed server (managed1)
          box 2 with second managed server (managed2)
          on box 1 I have another managed server, which hosts the HttpClusterServlet application
          The cluster is made up of managed1 & managed2, and httpClusterServlet is configured
          to send requests to boths the managed servers in the cluster.
          When I run some tests against the httpClusterServlet web application to see how
          it load-balances requests, I can see that all the requests are redirected just
          to managed1,
          on the same machine.
          If I stop managed1, and run some tests, I can see that httpCluster every time
          tries to contact managed1 first, and since it's down, sends the requests to managed2(handles
          failover correctly).
          If I move the httpClusterServlet application to another box, let's call it box
          3, and re run the tests, it will load-balances the requests between managed1 (box1)
          and managed2(box2) correctly.
          I would like to know if httpClusterServlet has some kind of "server affinity"
          logic (?) or I'm missing something in the cluster configuration (even if I can't
          see clearly how the cluster configuration could affect things, since HttpServlet,
          which is not in the cluster, just should route
          requests to the specified servers in round-robin fashion, I guess)
          Someone in previous posts pointed out http session issues, is it true? and so,
          why?
          Sorry for the far too long post,
          thanks in advance,
          Thomas


Only from load balancing point of view cluster is not really needed.
apart from session replication and failover capabilities, few more benefits are there with clustering only if you are using a web server also.
Stuck threads can be due to lot's of problems like application issues, load issues etc, So first make sure you are getting stuck thread on both servers or only on one, if on one, then in this case your load balancing not working properly and sending more load to that server, and if you are getting stuck threads on both then try to add one more managed server.
Regards
Mukesh Negi
http://weblogicserveradministration.blogspot.com

ACE balancing problems

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