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List:       openjms-developer
Subject:    RE: [openjms-developer] Garbage collecting messages from RDBMS
From:       "Tim Anderson" <tma () netspace ! net ! au>
Date:       2005-05-13 13:12:46
Message-ID: 000001c557bd$75ad1500$117afddc () xerces
[Download RAW message or body]

In the CVS version, the messages are reference counted,
so you shouldn't see this message.
Have you got a test I can run to reproduce the problem?

> -----Original Message-----
> From: openjms-developer-admin@lists.sourceforge.net 
> [mailto:openjms-developer-admin@lists.sourceforge.net] On 
> Behalf Of Benjamin Outram
> Sent: Wednesday, 11 May 2005 8:56 PM
> To: openjms-developer@lists.sourceforge.net
> Subject: [openjms-developer] Garbage collecting messages from RDBMS
> 
> 
> Hello,
> 
> I am having trouble getting openJMS to garbage collect 
> messages from the database using 0.7.6.1 and 0.7.7 (CVS).
> 
> I think that some messages are being deleted and some are 
> not. When a message isn't deleted I get the following error 
> message in the logs:
> 
> RMI TCP Connection(29)-192.168.0.115 | 242  | Cannot remove 
> message=ID:f1fec87d-bcd1-1004-863f-3d8cccddcdea
> 
> Looking at org.exolab.jms.persistence.Messages line 242 this 
> error is logged when the table row isn't deleted. The SQL 
> statement is "delete from messages where messageId=?" Looking 
> in the database, the message with id 
> 'ID:f1fec87d-bcd1-1004-863f-3d8cccddcdea' does exist.
> 
> database config:
> 
>   <DatabaseConfiguration>
>     <RdbmsDatabaseConfiguration
>       driver="org.firebirdsql.jdbc.FBDriver"
>       url="jdbc:firebirdsql://127.0.0.1:3050/c:/Program
> Files/Firebird/Firebird_1_5/data/DATA.FDB"
>       user="..."
>       password="..."
>       maxActive="0"
>       testQuery="SELECT CURRENT_TIME FROM RDB$DATABASE"
>       testBeforeUse="true" />
>   </DatabaseConfiguration>
> 
> administered topic config:
> 
> <administeredTopic name="logMessageTopic"/>
> 
> I use a non durable subscriber and do 
> logMessageTopicSubscriber.receive(1000) to receive a message.
> 
> Object messages are published to the topic using the log4j JMSAppender
> 
>   <appender name="jms" class="org.apache.log4j.net.JMSAppender">
>     <param name="InitialContextFactoryName" 
> value="org.exolab.jms.jndi.InitialContextFactory" />
>     <param name="ProviderURL" value="rmi://127.0.0.1:1099/" />
>     <param name="TopicConnectionFactoryBindingName"
> value="JmsTopicConnectionFactory" />
>     <param name="TopicBindingName" value="logMessageTopic" />
>     <param name="LocationInfo" value="true" />
>   </appender>
> 
> I run openJMS as an embedded server using
> JmsServer jmsServer = new JmsServer(configFileName); jmsServer.init();
> 
> Any help would be greatly appreciated. Thanks.
> 
> 
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