DGCserver Message

My weblogic Server keep on giving this message:
<Jun 24, 2002 6:06:19 PM GMT+08:00> <Info> <DGCserver> <Tried to renew lease
on
lost reference: '286'>
<Jun 24, 2002 6:07:19 PM GMT+08:00> <Info> <DGCserver> <Tried to renew lease
on
lost reference: '289'>
<Jun 24, 2002 6:07:19 PM GMT+08:00> <Info> <DGCserver> <Tried to renew lease
on
lost reference: '290'>
<Jun 24, 2002 6:07:19 PM GMT+08:00> <Info> <DGCserver> <Tried to renew lease
on
lost reference: '291'>
<Jun 24, 2002 6:07:19 PM GMT+08:00> <Info> <DGCserver> <Tried to renew lease
on
lost reference: '286'>
Any idea what does this message means?
I am using Weblogic Server 6.1 SP2 running on HP-UX.

Lim Boon Siong <[email protected]> wrote:
Thanks for your answer. I need more details.
Do you know why is this happen?ed Any impact to the server? Is it caused by
my application or weblogic server? How to prevent it from happening?I think these are harmless - you can simply change severity from 'Info' to
'Error'.
Many thanks for your answer.
Boon Siong
"Dimitri I. Rakitine" <[email protected]> wrote in message
news:[email protected]..
I think it means that server was not able to process RMI lease renewal
message in time, and by the time when message is finally processed, object
is already gone.
Lim Boon Siong <[email protected]> wrote:
My weblogic Server keep on giving this message:
<Jun 24, 2002 6:06:19 PM GMT+08:00> <Info> <DGCserver> <Tried to renew
lease
on
lost reference: '286'>
<Jun 24, 2002 6:07:19 PM GMT+08:00> <Info> <DGCserver> <Tried to renewlease
on
lost reference: '289'>
<Jun 24, 2002 6:07:19 PM GMT+08:00> <Info> <DGCserver> <Tried to renewlease
on
lost reference: '290'>
<Jun 24, 2002 6:07:19 PM GMT+08:00> <Info> <DGCserver> <Tried to renewlease
on
lost reference: '291'>
<Jun 24, 2002 6:07:19 PM GMT+08:00> <Info> <DGCserver> <Tried to renewlease
on
lost reference: '286'>
Any idea what does this message means?
I am using Weblogic Server 6.1 SP2 running on HP-UX.--
Dimitri
Dimitri

Similar Messages

DGCserver messages in log... "Tried to renew lease on lost reference"

Hi,
 I am running weblogic server 6.1 and get the following messages
 ####<Jan 30, 2002 2:36:55 PM CST> <Info> <DGCserver> <MBarton> <myserver> <ExecuteThread: '12' for queue: 'default'> <> <> <000000> <Tried to renew lease on lost reference: '706'>
 I have seen in the newsgroup that this was a problem previously in version 4.5.1
 any help would be appreciated.
 best regards,
 Mickey


 This shouldn't cause any problems. Does it? We will turn off these info messages.
 Cheers,
 -- Prasad
 Mickey Barton <[email protected]> wrote:
 >Hi,
 >I am running weblogic server 6.1 and get the following messages
 >
 >####<Jan 30, 2002 2:36:55 PM CST> <Info> <DGCserver> <MBarton> <myserver>
 ><ExecuteThread: '12' for queue: 'default'> <> <> <000000> <Tried to
 >renew lease on lost reference: '706'>
 >
 >I have seen in the newsgroup that this was a problem previously in version
 >4.5.1
 >
 >any help would be appreciated.
 >
 >best regards,
 >Mickey

DGCServer messages in log... "tried to renew lease"

Hi,
 I'm running three WL 4.5.2 servers clustered, JDK1.1.7b on Solaris 2.6.
 Normally the cluster runs just fine, but now I'm beginning to see the
 following message in all three servers:
 <DGCserver> tried to renew lease for lost ref: nnn
 Usually they come in small bursts of about 5 or 10 messages that are the
 same, except the "ref"s keep increasing. I'm guessing it has to do something
 with the in-memory replication of sessions (which I'm using).
 Any ideas? I tried restarting the servers but after a little while the
 messages started again.
 Thanks,
 Matias


One common symptom for this (Bad Status Exception) has been long gc. If gc
 takes more 30 seconds then you will start seeing these errors. To assertain
 this, you could turn on weblogic.debug.cluster=1 and if you see a message "Timed
 out server" in the log then you should tune your server.
 Please use latest service packs.
 thanks
 - Prasad
 Matias Pelenur wrote:
 > Well, after a few restarts the DGC messages aren't appearing anymore... But
 > something different is happening now which seems to be worse... And it's
 > affecting performance too. For some pages, one of the servers will throw a
 > bunch of exceptions (see below), and it seems it's cutting off the output so
 > pages get only half-created. Any ideas? I don't think I changed any settings
 > or anything like that.
 >
 > Thanks,
 > Matias
 >
 > Fri Sep 15 11:19:15 EDT 2000:<E> <HTTP> Servlet request terminiated with
 > Error:
 > Fri Sep 15 11:19:15 EDT 2000:<E> <HTTP>
 > weblogic.cluster.replication.BadStatusException: update found
 > 1802540915606489052 but it is not the secondary
 > at weblogic.rmi.extensions.BasicRequest.sendReceive(Compiled Code)
 > at
 > weblogic.cluster.replication.ReplicationManager_WLStub.update(Compiled Code)
 > at
 > weblogic.cluster.replication.ReplicationManager.updateSecondary(Compiled
 > Code)
 > at weblogic.servlet.internal.session.ReplicatedSession.sync(Compiled
 > Code)
 > at
 > weblogic.servlet.internal.session.ReplicatedSessionContext.sync(Compiled
 > Code)
 > at weblogic.servlet.internal.ServletRequestImpl.syncSession(Compiled
 > Code)
 > at
 > weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled Code)
 > at
 > weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled Code)
 > at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled Code)
 > at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
 > at weblogic.t3.srvr.ExecuteThread.run(Compiled Code)
 > --------------- nested within: ------------------
 > weblogic.utils.NestedError: Tried to update secondary, but it thought it was
 > the primary
 > - with nested exception:
 > [weblogic.cluster.replication.BadStatusException: update found
 > 18025409156064890
 > 52 but it is not the secondary]
 > at java.lang.Throwable.<init>(Compiled Code)
 > at java.lang.Error.<init>(Compiled Code)
 > at weblogic.utils.NestedError.<init>(Compiled Code)
 > at weblogic.servlet.internal.session.ReplicatedSession.sync(Compiled
 > Code)
 > at
 > weblogic.servlet.internal.session.ReplicatedSessionContext.sync(Compiled
 > Code)
 > at weblogic.servlet.internal.ServletRequestImpl.syncSession(Compiled
 > Code)
 > at
 > weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled Code)
 > at
 > weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled Code)
 > at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled Code)
 > at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
 > at weblogic.t3.srvr.ExecuteThread.run(Compiled Code)
 >
 > "Prasad Peddada" <[email protected]> wrote in message
 > news:[email protected]...
 > > Is this causing any problems on the server. Like unable to create sessions
 > for
 > > servlets/jsp's
 > >
 > > If so, this is related to DGC bug, if not then it is something else,
 > unless we
 > > know the object it is trying to find, I can't be of much help.
 > >
 > > - Prasad
 > >
 > > Matias Pelenur wrote:
 > >
 > > > Hi,
 > > > I'm running three WL 4.5.2 servers clustered, JDK1.1.7b on Solaris 2.6.
 > > >
 > > > Normally the cluster runs just fine, but now I'm beginning to see the
 > > > following message in all three servers:
 > > >
 > > > <DGCserver> tried to renew lease for lost ref: nnn
 > > >
 > > > Usually they come in small bursts of about 5 or 10 messages that are the
 > > > same, except the "ref"s keep increasing. I'm guessing it has to do
 > something
 > > > with the in-memory replication of sessions (which I'm using).
 > > >
 > > > Any ideas? I tried restarting the servers but after a little while the
 > > > messages started again.
 > > > Thanks,
 > > >
 > > > Matias
 > >
 Cheers
 - Prasad

Distributed Garbage Collector (DGC) messages in cluster when using Message Driven Beans

Version: Weblogic 6.1 SP2
 I'm seeing a lot of messages output on the node ** hosting my JMS
 server/destination ** in the cluster
 <Jun 4, 2002 5:35:03 PM EDT> <Info> <DGCserver> <Tried to renew lease on
 lost reference: '448'>
 Unfortunately, this message coincides with my MDB's ** on other nodes ** not
 being able to lookup the JMS destination that they are configured for.
 MDB's on the same node as the JMS server/destination are able to do lookups
 fine.
 Checking the JNDI tree on all nodes, I see the destinations replicated to
 all nodes. The MDB's use the default (i.e WebLogic's) connection factory
 (weblogic.jms.MessageDrivenBeanConnectionFactory) and I've bumped up the
 polling interval to 5 minutes from the default of 10 seconds.
 Any guidance on this would be greatly appreciated.
 I see that there is a patch available to fix the DCC info messages (April
 ,2002) on dev2dev. Anyone know if this addresses the MDB problem?
 Thanks in advance


FYI - in case anyone else sees this problem - it has been fixed in WLS 6.1
 SP3.
 If you are seeing this problem then you will see a log of
 NoSuchObjectException's in your console.
 Regards
 "Prashant Nayak" <[email protected]> wrote in message
 news:[email protected]...
 > Version: Weblogic 6.1 SP2
 >
 > I'm seeing a lot of messages output on the node ** hosting my JMS
 > server/destination ** in the cluster
 >
 > <Jun 4, 2002 5:35:03 PM EDT> <Info> <DGCserver> <Tried to renew lease on
 > lost reference: '448'>
 >
 > Unfortunately, this message coincides with my MDB's ** on other nodes **
 not
 > being able to lookup the JMS destination that they are configured for.
 > MDB's on the same node as the JMS server/destination are able to do
 lookups
 > fine.
 >
 > Checking the JNDI tree on all nodes, I see the destinations replicated to
 > all nodes. The MDB's use the default (i.e WebLogic's) connection factory
 > (weblogic.jms.MessageDrivenBeanConnectionFactory) and I've bumped up the
 > polling interval to 5 minutes from the default of 10 seconds.
 >
 > Any guidance on this would be greatly appreciated.
 >
 > I see that there is a patch available to fix the DCC info messages (April
 > ,2002) on dev2dev. Anyone know if this addresses the MDB problem?
 >
 > Thanks in advance
 >
 >
 >
 >
 >

DGCServer warning

In testing the cluster failover capability, I disconnected the network cable from one of the servers I was running in a cluster. The system failed over properly. When I reattached the network cable, the system added the server back into the cluster. However, I continue to get the following message:Tue Dec 12 17:34:51 GMT 2000: <DGCserver> tried to renew lease for 1 lost reference(s). What is the cause of this message? What needs to be done to clean up the cluster?

"Rich Kolkmeier" <[email protected]> wrote in message
news:3a366798$[email protected]..
In testing the cluster failover capability, I disconnected the
network cable from one of the servers I was running in a cluster.
The system failed over properly. When I reattached the network
cable, the system added the server back into the cluster. However,
I continue to get the following message:
Tue Dec 12 17:34:51 GMT 2000: <DGCserver> tried to renew lease
for 1 lost references
(s).
What is the cause of this message? What needs to be done to clean
up the cluster?Rich,
This message is printed when one WebLogic kernel tries to renew a lease for
an remote object from another WebLogic which has already been collected. It
makes sense that this might happen in the failure scenario you describe.
When the network is disconnected DGC lease renewals can't be sent and the
kernel exporting the object may therefore believe that the object is no
longer in use and collect it. When the network is re-established the remote
objects may be gone.
However the fact that you are seeing this message printed repeatedly is
troubling. You may want to contact [email protected] with the
description you provided here along with the following additional
information.
Are you seeing this message on the client or server? If on the server is it
on the server that was disconnected or on one of the other servers? What
version (including service packs) of WebLogic are you running?
Regards,
Adam Messinger

DGCserver

I am working with Weblogic 6.1 and testing a data access class. The data access
class calls another class, and passes it a connection. The second class is being
called many times before the first class finishes and returns a result. While
the test is running, I am getting several messages in the console as follows:
<Feb 26, 2003 9:42:38 AM MST> <Info> <DGCserver> <Tried to renew lease on lost
reference: '30869'>
I have checked to make sure that the PreparedStatements and ResultSets are closed
when no longer needed. The test eventually finishes, and returns the results.
The problem started when I added the code that calls the second class. I use the
second class in other places, and have not seen this problem before, but it isn't
called as many times as in the current test.
Any suggestions?
Thanks, Tom K

Hi Tom,
"Tom Koenning" <[email protected]> wrote in message
news:3e5e6a9d$[email protected]..
>
I am working with Weblogic 6.1 and testing a data access class. The dataaccess
class calls another class, and passes it a connection. The second class isbeing
called many times before the first class finishes and returns a result.While
the test is running, I am getting several messages in the console asfollows:
<Feb 26, 2003 9:42:38 AM MST> <Info> <DGCserver> <Tried to renew lease onlost
reference: '30869'>
I have checked to make sure that the PreparedStatements and ResultSets areclosed
when no longer needed. The test eventually finishes, and returns theresults.
The problem started when I added the code that calls the second class. Iuse the
second class in other places, and have not seen this problem before, butit isn't
called as many times as in the current test.
Any suggestions?DGCCerver stands for Distributed Garbage Collection Server. Normally
it happens when a client dies leaving RMI objects, like Connections, open.
Server tries to renew lease on such a disappeared object and gives up.
This message is harmless. AFAIR it was suppressed in 6.1 SP3.
Regards,
Slava Imeshev

DGCserver renewing lost refs

Hey all,
We're running WLS 4.5.1sp5 on solaris 2.7.
After some time, we start to see our execute queue length start to
increase dramatically. At the same time we start to see the following
messages:
Fri Jul 06 12:03:54 EDT 2001: <DGCserver> tried to renew lease for
lost ref: 677
Fri Jul 06 12:03:54 EDT 2001: <DGCserver> tried to renew lease for
lost ref: 678
Fri Jul 06 12:03:54 EDT 2001: <DGCserver> tried to renew lease for
lost ref: 692
This happens a lot and soon after start up on the new hosting
environment but hardly ever on the old hosting environment and never on
the development machines. The boxes are all the same... why would this
happen?
Any insights would be appreciated.
C.

Chad,
These messages indicate that a server got a message to renew a DGC lease for
a reference it had already collected. This means that the lease renewal
messages aren't being received and/or processed in a timely manner. Since
you mention that the execute queue length is quite long that is likely the
cause of the problem.
To diagnose that problem I would recommend taking a thread dump from the
server VM. Look at what the threads are doing. Are they blocked trying to
obtain some resource or doing some other operation that is preventing them
from proceeding?
Cheers!
Adam
"Chad Bryant" <[email protected]> wrote in message
news:[email protected]..
Hey all,
We're running WLS 4.5.1sp5 on solaris 2.7.
After some time, we start to see our execute queue length start to
increase dramatically. At the same time we start to see the following
messages:
Fri Jul 06 12:03:54 EDT 2001: <DGCserver> tried to renew lease for
lost ref: 677
Fri Jul 06 12:03:54 EDT 2001: <DGCserver> tried to renew lease for
lost ref: 678
Fri Jul 06 12:03:54 EDT 2001: <DGCserver> tried to renew lease for
lost ref: 692
This happens a lot and soon after start up on the new hosting
environment but hardly ever on the old hosting environment and never on
the development machines. The boxes are all the same... why would this
happen?
Any insights would be appreciated.
C.

DGCServer - tried to renew lease for lost ref: 509

Recently we have been getting ALOTof messages in our server log file of the
form:
Fri Jul 14 10:08:19 PDT 2000: <DGCserver> tried to renew lease for lost
ref: 509
We use RMI for java client to server communcation and are using Weblogic
4.5.1 SP 8
with nativeIO enabled.
What could be causing these messages?
Thanks!
Rick

Thanks! I still have one problem, the lease renewal messages for lost
references never seem
to end for the specific reference. I have a weblogic.log file with hundreds
of those messages for
each lost reference (and still going). It seems that it is not giving
up... any ideas?
Rick
"Michael Girdley" <[email protected]> wrote in message
news:396fa6c8$[email protected]..
Normally, I would ask a customer in the situation to provide more about
their application. But, since I know a lot about how your application is
architected, I would guess the people are shutting down their browserswhile
your applet still running. The applet is not closing the socket cleanly
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of the distributed objects, is trying to renew a lease for that object.It
cannot locate it and will eventually give up on it.
Thanks,
Michael
Michael Girdley
Product Manager, WebLogic Server & Express
BEA Systems Inc
Rick Spickelmier <[email protected]> wrote in message
news:396f960d$[email protected]..
Recently we have been getting ALOTof messages in our server log file ofthe
form:
Fri Jul 14 10:08:19 PDT 2000: <DGCserver> tried to renew lease forlost
ref: 509
We use RMI for java client to server communcation and are using Weblogic
4.5.1 SP 8
with nativeIO enabled.
What could be causing these messages?
Thanks!
Rick

Strange Warning Message

Hello All,
I have an application in which I call EJBs deployed in WebLogic from
JSPs deployed in
TOMCAT JSP server.
And every thing is working fine. However, I have one message which keeps
on comming inside the web logic console.
Tue Mar 20 16:27:05 GMT+05:30 2001: <DGCserver> tried to renew lease
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st reference(s).
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regards,
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Copy your song backup folder to another directory and hit delete, you may need it.
What I attribute it to is an object or event which is corrupt (which often leads to further corruption). If your session came from an older version of Logic, if your audio files get modified, etc-basically Logic tells you something isn't right and there are mismatches in the data. Low event memory and damaged or legacy objects seem to trigger this. If the problem continues your session is likely on the way out, fortunately you can salvage the session from the song backup folder, it is often best to move it all to a new session and rework for a few hours. Not a pleasing message if you get it more than once. Logic will try to fix it when you delete it but it often seems like it is a sign of things to come. As long as you have many song backups you should be safe, if it dies it will be unusable if it deletes correctly you may have 0 further issues.

What is DGCServer?

I am using WLS6.0SP2. When the server runs for a while, the server console
print out a lot of messages like the following:
<Sep 19, 2001 3:46:34 PM PDT> <Info> <DGCserver> <tried to renew lease for 1
los
t reference(s).>
<Sep 19, 2001 3:46:34 PM PDT> <Info> <DGCserver> <tried to renew lease for 1
los
t reference(s).>
Howerver, the server is still behaving well.
Anybody know what is the DGCServer?
In what circumstance, the above message may appear? What is the effect of
the above messages?
Thanks alot!
--Chunbo

DGC is distributed garbage collection algorithm. I think that
you see this message when server tries to renew lease for an
object instance which no longer exists (client want's able to
send lease renewal message in time, or server wasn't able to
process it in time - something like that).
Of course, I can be wrong ;-)
Chunbo Huang <[email protected]> wrote:
I am using WLS6.0SP2. When the server runs for a while, the server console
print out a lot of messages like the following:
<Sep 19, 2001 3:46:34 PM PDT> <Info> <DGCserver> <tried to renew lease for 1
los
t reference(s).>
<Sep 19, 2001 3:46:34 PM PDT> <Info> <DGCserver> <tried to renew lease for 1
los
t reference(s).>
Howerver, the server is still behaving well.
Anybody know what is the DGCServer?
In what circumstance, the above message may appear? What is the effect of
the above messages?
Thanks alot!
--Chunbo--
Dimitri

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