I would go with wotaskd/monitor. You can more easily run multiple
instances; each instance gives you another database connection.
Alternatively, you can set the property:
er.extensions.ERXObjectStoreCoordinatorPool.maxCoordinators=3
And this will give you a pool of database connections (and EOF stacks). It
will use more memory though. Also, I have a suspicion that this can cause
deadlocks occasionally, but nothing confirmed.
John
On Wed, May 30, 2012 at 9:04 AM, Ron Lift <[email protected]> wrote:
> I have been doing some more research and I am beginning to think this post
> describes the cause of the issue
>
>
>
>
> http://stackoverflow.com/questions/3320400/to-prevent-a-memory-leak-the-jdbc-driver-has-been-forcibly-unregistered
>
>
>
> Has anyone deployed and application to production with either Tomcat 6 or
> 7 with these messages? If so, did they have any issues?
>
>
>
> We are using out of the box EOF, the article talks about the need for
> connection pooling. I have read the Cayenne supports connection pooling. Does
> EOF?
>
>
>
> Or maybe we switch to monitor for deployment on RHEL6. I read the
> articles and considering it. Anyone done this?
>
>
> On Tue, May 29, 2012 at 3:30 PM, D Tim Cummings <[email protected]>wrote:
>
>> I have noticed these messages too and would like to know if there is
>> anything that can be done about them
>>
>> Tim
>>
>>
>>
>> On 29/05/2012, at 23:31, Ron Lift <[email protected]> wrote:
>>
>> At work we are migrating from RHEL 5 to RHEL 6 and also upgrading to
>> Tomcat 6. When I deploy the current application that is running on Tomcat
>> 5.5 to tomcat 6, I see the following messages in the catalina.out when I
>> either deploy the app, start/ stop the app or the tomcat instance. I do
>> not have these messages in my tomcat 5.5 log files. Is there some setting
>> that I am missing? Any help will be greatly appreciated
>>
>> Eclipse 3.6.1 , WOLips 3.6. MSSQL 2008R2 Database.
>>
>>
>>
>> The last 2 messages repeat multiple times
>>
>>
>>
>>
>>
>> May 29, 2012 8:59:00 AM org.apache.catalina.loader.WebappClassLoader
>> clearReferencesJdbc
>>
>> SEVERE: The web application [/CoopApp] registered the JDBC driver
>> [com.microsoft.sqlserver.jdbc.SQLServerDriver] but failed to unregister it
>> when the web application was stopped. To prevent a memory leak, the JDBC
>> Driver has been forcibly unregistered.
>>
>>
>>
>> May 29, 2012 8:59:00 AM org.apache.catalina.loader.WebappClassLoader
>> clearThreadLocalMap
>>
>> SEVERE: The web application [/CoopApp] created a ThreadLocal with key of
>> type [er.extensions.eof.ERXEC$1] (value [er.extensions.eof.ERXEC$1@1083964f])
>> and a value of type [java.util.Vector] (value [[]]) but failed to remove it
>> when the web application was stopped. This is very likely to create a
>> memory leak.
>>
>>
>>
>> May 29, 2012 8:59:00 AM org.apache.catalina.loader.WebappClassLoader
>> clearThreadLocalMap
>>
>> SEVERE: The web application [/CoopApp] created a ThreadLocal with key of
>> type
>> [er.extensions.foundation.ERXThreadStorage.ERXThreadStorageCloneableThreadLocal]
>> (value
>> [er.extensions.foundation.ERXThreadStorage$ERXThreadStorageCloneableThreadLocal@2f012501])
>> and a value of type [java.util.HashMap] (value [{}]) but failed to remove
>> it when the web application was stopped. This is very likely to create a
>> memory leak.
>>
>>
>>
>> Ron Lift
>>
>> C-E
>>
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>
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