Emergency problem with HttpSession on Weblogic 4.5.1 Service Pack 9

Hi folks,
          We have such configuration:
          2 WLS instances running as front-end of the system. They basically have
          HttpClusterServlet enabled and act as proxies routing the traffic between
          clients and other WLS servers on back-end.
          2 WLS instances which heavily use servlets with HttpSession and form
          WebLogic cluster.
          DNS round-robining takes care of routing all requests to proxy servers.
          In order to have very good failover we decided to have two proxies, so if
          any of them fails another one will keep routing the traffic.
          The problem is that if one of the proxy servers goes down, then location of
          some HttpSession objects can not be resolved by second running proxy server.
          As far as I know HttpClusterServlet keeps track of all HttpSession object
          created by servlets, their locations (primary & secondary server) and
          basically takes care of redirecting each http request within the same
          session to appropriate server in cluster. I thought that if we have to WLS
          proxies then this mapping about each session is stored in both proxies. It
          looks that it is not the case. It seems to us, that particular HttpSession
          object is managed all time by single proxy server and second one does not
          know anything about such session. The result is that when one the proxy goes
          down, then servlet which calls getHttpSession( true ) ends up with brand new
          session created by another proxy.
          Can it be avoided, so each proxy server knows about all HttpSession objects
          and can still route the traffic if another one is down? Is it possible in
          WebLogic?Are we missing something? Maybe this proxy servers should also form
          another cluster, but then we still need to define entry point? If NOT, we
          need to have official statement.
          It is urgent !!!
          Waldek

Waldek Kozaczuk wrote:
          > Hi folks,
          >
          > We have such configuration:
          >
          > 2 WLS instances running as front-end of the system. They basically have
          > HttpClusterServlet enabled and act as proxies routing the traffic between
          > clients and other WLS servers on back-end.
          Are these configurations identical? I believe both of them are active.
          > 2 WLS instances which heavily use servlets with HttpSession and form
          > WebLogic cluster.
          >
          > DNS round-robining takes care of routing all requests to proxy servers.
          >
          > In order to have very good failover we decided to have two proxies, so if
          > any of them fails another one will keep routing the traffic.
          >
          > The problem is that if one of the proxy servers goes down, then location of
          > some HttpSession objects can not be resolved by second running proxy server.
          Who is redirecting the requests to these proxy servers. Is it possible that
          they dropped the cookie, when the first proxy failed.
          > As far as I know HttpClusterServlet keeps track of all HttpSession object
          > created by servlets, their locations (primary & secondary server) and
          > basically takes care of redirecting each http request within the same
          > session to appropriate server in cluster. I thought that if we have to WLS
          > proxies then this mapping about each session is stored in both proxies. It
          > looks that it is not the case. It seems to us, that particular HttpSession
          > object is managed all time by single proxy server and second one does not
          > know anything about such session. The result is that when one the proxy goes
          > down, then servlet which calls getHttpSession( true ) ends up with brand new
          > session created by another proxy.
          >
          > Can it be avoided, so each proxy server knows about all HttpSession objects
          > and can still route the traffic if another one is down?
          > Is it possible in WebLogic?
          Yes
          > Are we missing something? Maybe this proxy servers should also form
          > another cluster,
          No.
          > but then we still need to define entry point? If NOT, we
          > need to have official statement.
          >
          > It is urgent !!!
          >
          > Waldek
          To help us diagonise the problem you could send us the log files on all the
          servers with weblogic.debug.httpd=true.
          Thanks
          - Prasad

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"Integrator" <[email protected]> wrote:
>
Hello.
How do I run a weblogic platform portal 8.1 on a weblogic server 7.0
service
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"rajesh" <[email protected]> wrote in message
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"Raja" <[email protected]> wrote in message
news:3c6abfc8$[email protected]..
>
Hi,
i am using weblogic in my project both as a webserver and as theapplication server.
But i am facing problems with requests being sent to the server. Basicallyi have
a form in my jsp which, if submitted by multiple clients at the sameinstant in
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entity Beans to fulfill the request.
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781-993-9212 x375
[email protected]

Mark,
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Too little information and a very vague question. Need more info.
          "Tal" <[email protected]> wrote in message
          news:[email protected]..
          >
          > Hi,
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Bola

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Bill,
folowing the logic of your original query by Sybase
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update mis_dik_adeia
set trexon_etos_days = (select days_per_year
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where mis_dik_adeia.adeia_id = mis_plafon_adeivn.adeia_id
and mis_plafon_adeivn.years_yphr = (
select max( a.years_yphr )
from mis_plafon_adeivn a
where a.adeia_id = mis_plafon_adeivn.adeia_id
and a.years_yphr <= eth )
where
mis_dik_adeia.adeia_id between aapo and aews
and mis_dik_adeia.employee_id = erg
and mis_dik_adeia.etos = etos1
and
exists (select 1
from mis_plafon_adeivn
where mis_dik_adeia.adeia_id = mis_plafon_adeivn.adeia_id
and mis_plafon_adeivn.years_yphr = (
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from mis_plafon_adeivn a
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select
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from mis_dik_adeia, mis_plafon_adeivn
where mis_dik_adeia.adeia_id = mis_plafon_adeivn.adeia_id
mis_dik_adeia.adeia_id between aapo and aews
and mis_dik_adeia.employee_id = erg
and mis_dik_adeia.etos = etos1
and mis_plafon_adeivn.years_yphr =
(select max( a.years_yphr )
from mis_plafon_adeivn a
where a.adeia_id = mis_plafon_adeivn.adeia_id
and a.years_yphr <= eth)
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In 10G it can be easily:
megre into mis_dik_adeia
using (
select
days_per_year,
mis_dik_adeia.rowid rid
from mis_dik_adeia, mis_plafon_adeivn
where mis_dik_adeia.adeia_id = mis_plafon_adeivn.adeia_id
mis_dik_adeia.adeia_id between aapo and aews
and mis_dik_adeia.employee_id = erg
and mis_dik_adeia.etos = etos1
and mis_plafon_adeivn.years_yphr =
(select max( a.years_yphr )
from mis_plafon_adeivn a
where a.adeia_id = mis_plafon_adeivn.adeia_id
and a.years_yphr <= eth)
) src
on (mis_dik_adeia.rowid = src.rid)
when matched then
update set mis_dik_adeia.trexon_etos_days = src.days_per_year;
I have to notice I didn't check it carefully, so I can miss...
Rgds.
Corrected a mistake in the table name
Message was edited by:
dnikiforov

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          server and they share the information perfectly. Both Cluster Groups have
          their CLUSTER-wide weblogic.properties file set for
          weblogic.httpd.clustering.enable=true
          weblogic.httpd.session.persistence=true
          weblogic.httpd.session.persistentStoreType=replicated
          weblogic.httpd.register.cluster=weblogic.servlet.internal.HttpClusterServlet
          Any ideas on why this is happening? And How I can correct it?
          David Marshall
          ==============================================
          Environmental Background
          CLUSTER Group A (Production)
          VLAN1
          StrongHold 3 (Apache 1.3.19 w/SSL) (Solaris 8)
          ! mod_wl-ssl.so
          ! WebLogicCluster
          sccwls00:nnnn,sccwls01:nnnn
          V
          <firewall translates IPs from 1 VLAN 1 VLAN 2>
          VLAN2 !
          V V
          SCCWLS00 (Solaris 8) SCCWLS01 (Solaris 8)
          CLUSTER Group B (Development)
          StrongHold 3 (Apache 1.3.19 w/SSL) (Solaris 7)
          ! mod_wl-ssl.so
          ! WebLogicCluster
          weblogic00:nnnn,weblogic01:nnnn
          V V
          WEBLOGIC00 (Soaris 8) WEBLOGIC01 (Solaris 8)


What kind of problem do you have?
If it's not connected with JDBC, you'd better post your question
in webservices newsgroup.
Regards,
Slava Imeshev
"leopld goess" <[email protected]> wrote in message
news:[email protected]..
hy out there.
i've been working with apache soap on wl 5.1 for a while now, and
everything seems to be working allright- as long as i don't try to
install a servicepack, namely sp8 or sp10. if i do that, the entire
soap service fails to deploy.
any ideas...
thanx
leopold

WS2012 Standard R2 with Essentials sudden problem with Server Manager, Essential Dashboard and other services

Hi all,
I have a problem with my Windows Server 2012 R2 with Essential installed. When I try to run Server Manager the server manager window doesn't appear and the same thing applies for starting the essentials dashboard. This leads to that some of the features doesn't
work properly like remote web access, client backup and so on. When I check the Services a lot of services haven't even started. Trying to manually start for example Windows Server Essentials Management Services gives me following error message:
"Windows could not start the Windows Server Essentials Management Services on Local Computer. Error 1068: The dependency service or group failed to start"
What can be wrong here? I haven't done anything to the server that could start these problems. This started all of a sudden.
Thank you all in advance for any help.
EDIT:
I rebooted my server in safe mode and I tried to run SFC /Scannow which stops at 84% and gives me following message:
"Windows Resource Protection could not perform the requested operation."
I also tried to run "DISM.exe /Online /Cleanup-Image /RestoreHealth". This did not help either. It completes the operation but nothing changes. The problem is still there.
I thought that my server backups were OK and that this problem would be gone by restoring the C: drive with backup image. The problem is that all my good backups was rewritten with new backups that could not take backup of the C: drive for some reason. Now
I need to solve this problem without reinstalling the whole operating system.
EDIT:
I have also completed the chkdsk C: /r command and now the SFC /Scannow command can be completed, with notification that some files could not be fixed. I have attached the sfcdetail.txt file which points out that
"tsgclean.exe" cannot be repaired. What has that file to do with my WS2012 problems...
2015-01-04 03:12:54, Info CSI 00000477 [SR] Cannot repair member file [l:24{12}]"tsgclean.exe" of Microsoft-Windows-TSProxy-EdgeAdapter,
Version = 6.3.9600.16384, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, hash mismatch

Hi,
Did you remember any operation which you had done before this issue occurred? For examples, install any update,
install any third-party application or any other? Just a confirmation, thanks for your understanding.
For those problematic services, please open services’ Properties and navigate to
Dependencies tab, then check if all system components which this service depends on run as normal.
In addition, please open Event Viewer and check if find relevant events. Meanwhile, please follow the path:
%programdata%\Microsoft\Windows Server\Logs and check Dashboard log file if find more clues.
By the way, when you run
sfc /scannow command completely, did you open Server Manager or Dashboard again? Any difference?
If any update, please feel free to let me know.
Hope this helps.
Best regards,
Justin Gu
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected].
Hello Justin,
Regarding the third-party applications:
I have not installed any third-party application that could cause this problem. All my third-party applications that are installed on the WS2012 R2 are confirmed working well with the operative system and are installed at the time when I hadn't these problems.
I cannot say anything about windows update because that is something that I update once in a week after checking that no user is reporting any issues. I have learned my leason with windows update when I had Surface Pro 2, that was a dissaster.
Regarding the Windows Updates:
Anyway, I tried to remove all the windows updates before as well (not the security updates) down to 5th December which is the time when I know that my server worked well. Only two updates could not be removed (KB3012199 and KB2989647). I don't
know if these two updates can cause any problem?
Regarding the problematic services:
For example: Checking the properties for "Windows Server Essentials Management Service" -> It is dependable on
"1. Active Directory Domain Services" and "2. Windows Server Essentials Provider Registry Service".
No 1 is running but not no 2. If I try to start no 2 service it will give me the same message as before:
"Windows could not start the Windows Server Essentials Management Services on Local Computer. Error 1068: The dependency service or group failed to start"
Regarding the Logs:
I have uploaded Dashboard log files which are created after 5th December to my dropbox account: Link
Regarding the SFC command:
Of course, when the SFC command was completed but with error that it could not repair
tsgclean.exe I tried to start the essentials dashboard and WS2012 server manager with no luck.
What about the error message? I looked up that file in the explorer and it is located in folder "C:\Windows\WinSxS\amd64_microsoft-windows-tsproxy-edgeadapter_31bf3856ad364e35_6.3.9600.16384_none_2ec8d374a0ac5606"
Why can't it be repaired and what kind of file is that?
Best regards

Emergency problem with HttpSession on Weblogic 4.5.1 Service Pack 9

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