Multiple Apache-Weblogic plug-in configurations for the same host

Hi BEA,
 I have a situation where I have more than one weblogic server/cluster both using
 the same Apache to proxy. Reading the Apache plug-in configuration I gather that
 below should work. In Apache (httpd.conf):
 <Location /path1>
 SetHandler weblogic-handler
 WeblogicHost app1
 WeblogicPort 7001
 </Location>
 <Location /path2>
 SetHandler weblogic-handler
 WeblogicHost app2
 WeblogicPort 7001
 </Location>
 In this case the later Location of the two works fine and the other seems like
 it is just not there. (If the two are switched the other works fine...) The thing
 is that, if possible, I would like to avoid splitting the two locations onto two
 different VirtualHosts (which works).
 Does anyone have any ideas on how to solve this and still avoid the use of multiple
 VirtualHost-definitions?
 Is it due to a limitation in Apache module architecture that the configuration
 above does not work or is it a design choice in the plug-in?
 //GG

          Gunnar,
          I would post this Apache proxy plug in question to the
          weblogic.developer.interest.plug-in forum
          Chuck Nelson
          DRE
          BEA Technical Support

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<BLOCKQUOTE>quote:<HR>Originally posted by david walker ([email protected]):
Has anyone encountered problems installing Oracle 8.0.5 on Redhat 7.0. RedHat 6.2 installation works.<HR></BLOCKQUOTE>
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. /etc/init.d/functions
CWD=`pwd`
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case "$1" in
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touch /var/lock/subsys/oracle
stop)
su - oracle -c '. $HOME/.oraclerc && dbshut && lsnrctl stop'
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restart)
cd $CWD
$0 stop
$0 start
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esac
exit 0
null

Apache - Weblogic plug-in - Segmentation fault. Please Help me!

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I copied mod_wl_ssl.so from
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Added entries in httpd.conf as
LoadModule weblogic_module /usr/apache/libexec/mod_wl_ssl.so
AddModule mod_weblogic.c
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You may want to check the certifications for Solaris 9 and the Apache plug-in at
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"Raja Balasubramanian" <[email protected]> wrote:
Thank you Eric,
I will do that
Raja
"Eric Gross" <[email protected]> wrote in message
news:[email protected]...
I believe this is going to require more debugging such as attachinga
debugger(gdb) to Apache and getting a backtrace.
I suggest opening up a support case.
Regards,
Eric
"Raja Balasubramanian" <[email protected]> wrote in message
news:[email protected]...
Hi Eric,
Thank you for the replies.
I tried with the same test as you specified. Still im getting the
same
problem.
[Mon Mar 10 13:57:21 2003] [notice] child pid 1184 exit signal
Segmentation Fault (11)
Im running Solaris 9 in SPARC platform. It's a Sun E450 server.
Im using the default apache package which comes with Solaris 9. Ididn't
do
anything with apache.
Bea website says that Weblogic 7 sp2 is certified for Soalris 9.
That's
y
i
installed Solaris 9.
I tested the same on a Linux Machine (Redhat Linux 7.1 on IA). It
works
fine
without any problem.
How can i make things work?
Thank you for your kind replies
Raja
"Eric Gross" <[email protected]> wrote in message
news:[email protected]...
Looks like it should work.
Let's simplify your test:
<Location /test>
WebLogicHost 127.0.0.1
WebLogicPort 7001
Debug ALL
DebugConfigInfo ON
SetHandler weblogic-handler
</Location>
Try with just that.
Another thing is that I am unsure as to whether we have tested
with
Solaris
9. This is SPARC right? Also, can you outline the steps you took
when
building apache? Did you use GCC?
Thanks,
Eric
"Raja Balasubramanian" <[email protected]> wrote
in
message
news:[email protected]...
Hi,
Now i changed to mod_wl_ssl.so.
And i changed the httpd.conf as
LoadModule weblogic_module libexec/mod_wl_ssl.so
<IfModule mod_weblogic.c>
WebLogicHost 127.0.0.1
WebLogicPort 7001
Debug ALL
DebugConfigInfo ON
StatPath true
HungServerRecoverSecs 300
ConnectTimeoutSecs 5
</IfModule>
But im getting the same error. NO wlproxy.log file is created
in my
server.
I tried Debug ON also. Still the same.
Am i doing anything wrong?
Please help me...
Thank you
Raja
"Eric Gross" <[email protected]> wrote in message
news:[email protected]...
That means that your apache instance is compiled with -DEAPI
and
should
use
the mod_wl_ssl.so.
Can you please try to set Debug ALL and get the log in
/tmp/wlproxy.log
and
share that?
Thanks,
Eric
"Raja Balasubramanian" <[email protected]> wrote
in
message
news:[email protected]...
Hi Eric,
When im using mod_wl.so im getting warning from Apache as
[Mon Mar 10 12:41:15 2003] [warn] Loaded DSO
libexec/mod_wl.so
uses
plain Apache 1.3 API, this module might crash under
EAPI!
(please
recompile it with -DEAPI)
Thank you
Raja
"Eric Gross" <[email protected]> wrote in message
news:[email protected]...
Are you using modssl or any apache with EAPI compiled in?
Otherwise, you should be using the mod_wl.so.
As well, please set Debug ALL to see if we can get more
debug.
Thanks,
Eric
"Raja Balasubramanian" <[email protected]>
wrote
in
message
news:[email protected]...
Hi all,
Im trying to set up Apache weblogic plug-in, and im having
problems
with
that.
Im running Solaris 9 with Apache/1.3.26 (Unix) and Weblogic
7
with
sp2.
Here is what i did:
I copied mod_wl_ssl.so from
/bea/weblogic700/server/lib/solaris/mod_wl_ssl.so to/usr/apache/libexec
Added entries in httpd.conf as
LoadModule weblogic_module/usr/apache/libexec/mod_wl_ssl.so
AddModule mod_weblogic.c
<LocationMatch "\.jsp$">
SetHandler weblogic-handler
StatPath false
</LocationMatch>
<LocationMatch "/(service1|service2|service3)/">
SetHandler weblogic-handler
StatPath false
</LocationMatch>
<IfModule mod_weblogic.c>
WebLogicHost 127.0.0.1
WebLogicPort 7001
HungServerRecoverSecs 300
ConnectTimeoutSecs 5
</IfModule>
When i access the url with out specifying port 7001 it's
not
working.
I checked the /var/apache/logs/error_log file. Im getting
the
error
as
child pid 805 exit signal Segmentation Fault
(11)
Am i missing anything here?
Thank you
Raja

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Kind regards,
Zsuzsanna

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import testewithprotobuf.MyPet.Pet;
import com.bea.wlevs.adapters.jms.api.InboundMessageConverter;
import com.bea.wlevs.adapters.jms.api.MessageConverterException;
import com.google.protobuf.InvalidProtocolBufferException;
public class PetMessageConverter implements InboundMessageConverter {
 @SuppressWarnings("rawtypes")
 @Override
 public List convert(Message message) throws MessageConverterException,
 JMSException {
 BytesMessage bytesMessage = (BytesMessage) message;
 long bodyLen = bytesMessage.getBodyLength();
 byte[] buffer = new byte[(int) bodyLen];
 bytesMessage.readBytes(buffer);
 try {
 Pet pet = Pet.parseFrom(buffer);
 return Collections.singletonList(pet);
 } catch (InvalidProtocolBufferException e) {
 throw new MessageConverterException(e);
Please, what's wrong?
Thanks!

This error usually indicates that you have both event type and converter bean specified or neither specified. In your case, that doesn't appear to the case from looking at the spring file. Could you also paste the contents of your configuration file from META-INF/wlevs directory?

Oracle Coherence*Web and BlazeDS: Multiple FlexSessions created for the same HttpSession

Hi all,
I have searched this forum and found a lot of good information from Alex Glosband and others about the infamous "Detected duplicate HTTP - based FlexSessions, generally due to the remote host disabling session cookies. Session coolkies must be enable to manage the client connection correctly." message.
It seems, however, none of the cases are identical to ours. This is ours:
- Resin 3.1.9
- Oracle Coherence 3.7.1 with Coherence*Web (session replication)
With this setup we get the "Detected duplicate HTTP..." message on the first attempt to use BlazeDS and on every subsequent call. The same client and server code works fine in a local sessions setup. With Coherence 3.3 (currently our production environment) it seems to occur less frequently, but still as frequent as it is a major issue for us. It fails even with a single node using in-process distributed caching in our test setup (as well as with multi node out of process caching in our staging environment, for Coherence knowledgeable the resin app server runs with tangosol.coherence.session.localstorage=true in the first case and false in the second).
Both the listener and message broker are mapped as "Coherence aware" in web.xml[1] so that they should use clustered sessions.
We have been digging a bit and we found out that if we commented out lines 427 and 434 of flex.messaging.endpoints.BaseHTTPEndpoint from version 4.0.0.14931 it seems to mask the bug. We added some logging in the setupFlexClient method and it seems that we get more or less a new FlexSession for each and every call - but they have the same cookie and thus underlying HttpSession. I.e. the list returned from flexClient.getFlexSessions() keeps growing. Thus we are not so keen on going to production with that memory leak and the above mentioned ugly hack of commenting out the detection of duplicates.
We use request scope for the remote object, but could in theory use any scope as we do not really have any state on the object itself, it is all HttpSession state and return values that are key (logon is performed prior to doing the first blaze call, in pure forms and ajax, and it is not a timing issue in that regard we are seeing).
Hope someone can shed some light on what can be happening. Is there any "reference testing"[2] or something when the FlexSessions are created that makes them being created as new? Where are they created? We do not know the inner workings of the BlazeDS source, we just watched the call trace of the unwanted invalidation and found that to be line 427 of flex.messaging.endpoints.BaseHTTPEndpoint.
Can we disable FlexSessions? Since the flex and plain html parts of the app share the sessions, we always use FlexContext.getHttpRequest().getSession() anyway, never storing any state directly in the FlexSession or on the remote object. Or maybe there is a config option to help us with this detection (or creation) of multiple FlexSessions?
Cheers and TIA,
-S-
[1] - For instance, this i the message broker servlet def:
<servlet>
<servlet-name>MessageBrokerServlet</servlet-name>
<display-name>MessageBrokerServlet</display-name>
<servlet-class>com.tangosol.coherence.servlet.api22.ServletWrapper</servlet-class>
<init-param>
<param-name>coherence-servlet-class</param-name>
<param-value>flex.messaging.MessageBrokerServlet</param-value>
</init-param>
<init-param>
<param-name>services.configuration.file</param-name>
<param-value>/WEB-INF/flex/services-config.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
[2] - As you undertstand this is speculation based on pure air, but it could be that in Coherence there was a serialization/deserialization happening somehow that would break such a test?

Just a quick update, it seems things are running in a stable fashion (and without visible memory leaks, just keeping the latest FlexSession) with these changes in BaseHTTPEndpoint:
 * Overrides to guard against duplicate HTTP-based sessions for the same FlexClient which will occur if the remote host has disabled session
 * cookies.
 * @see AbstractEndpoint#setupFlexClient(String)
 @Override
 public FlexClient setupFlexClient(String id) {
 log.debug("setupFlexClient start id " + id);
 FlexClient flexClient = super.setupFlexClient(id);
 // Scan for duplicate HTTP-sessions and if found, invalidate them and throw a MessageException.
 // A request attribute is used to deal with batched AMF messages that arrive in a single request by trigger multiple passes through this
 // method.
 boolean duplicateSessionDetected = (FlexContext.getHttpRequest().getAttribute(REQUEST_ATTR_DUPLICATE_SESSION_FLAG) != null);
 if (!duplicateSessionDetected) {
 List<FlexSession> sessions = flexClient.getFlexSessions();
 log.debug("Client has " + sessions.size() + " sessions.");
 int n = sessions.size();
 if (n > 1) {
 int count = 0;
 for (int i = 0; i < n; i++) {
 if (sessions.get(i) instanceof HttpFlexSession)
 count++;
 if (count > 1) {
 FlexContext.getHttpRequest().setAttribute(REQUEST_ATTR_DUPLICATE_SESSION_FLAG, Boolean.TRUE);
 duplicateSessionDetected = true;
 break;
 // If more than one was found, remote host isn't using session cookies. Kill all duplicate sessions and return an error.
 // Simplest to just re-scan the list given that it will be very short, but use an iterator for concurrent modification.
 int i = 0;
 if (duplicateSessionDetected) {
 List<FlexSession> sessions = flexClient.getFlexSessions();
 log.debug("Detected sessions from client: " + sessions);
 for (FlexSession session : sessions) {
 if (session instanceof HttpFlexSession && i < sessions.size()) {
// log.debug("----> sessionId: " + session.getId());
// Enumeration e1 = session.getAttributeNames();
// while (e1.hasMoreElements()) {
// Object key = e1.nextElement();
// log.debug("--------->" + key + "--------->" + session.getAttribute((String) key));
// session.invalidate();
 flexClient.sessionDestroyed(session);
 i++;
 // Return an error to the client.
// DuplicateSessionException e = new DuplicateSessionException();
// e.setMessage(ERR_MSG_DUPLICATE_SESSIONS_DETECTED);
// throw e;
 return flexClient;
It is not exactly beautiful (to say the least), but if it does the trick I might just be pragmatic enough to go with it... NB: I am of course not proposing this as a patch to this file or anything, it is just an ugly hack for our specific case, but maybe the information can help the BlazeDS team find the root cause making it incompatible with Coherence*Web.
Will give it a test run on our staging servers.

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