TopLink acquires a connection for a transaction once a write to the database has been issued (update query, flush). Once the transaction commits the connection will be released.
--Gordon
-----Original Message-----
From: Marina.Vatkina_at_Sun.COM [mailto:Marina.Vatkina_at_Sun.COM]On Behalf Of
Marina Vatkina
Sent: Wednesday, August 30, 2006 1:08 PM
To: dev_at_glassfish.dev.java.net
Cc: Kshitiz Saxena
Subject: Re: EJB/ Toplink Query
Hello Gordon,
Does TopLink keep a connection for the duration of a transaction?
If yes, when does it release such connection?
thanks,
-marina
Gordon Yorke wrote:
> Hello Sahoo,
> When using Container Managed EntityManagers in GlassFish TopLink does not cache the connections. TopLink will only cache the connections when a Java SE style deployment is configured to connect to the datasource throught the direct connect properties in the persistence.xml file.
> --Gordon
>
> -----Original Message-----
> From: Sanjeeb.Sahoo_at_Sun.COM [mailto:Sanjeeb.Sahoo_at_Sun.COM]On Behalf Of
> Sanjeeb Kumar Sahoo
> Sent: Wednesday, August 30, 2006 6:06 AM
> To: dev_at_glassfish.dev.java.net; Yorke Gordon J
> Cc: Kshitiz Saxena
> Subject: Re: EJB/ Toplink Query
>
>
> Gordon,
>
> Can you please clarify the following: when TopLink Essential is used as
> a JPA provider in GlassFish server environment, does it cache the
> connections or not?
>
> Thanks,
> Sahoo
> Gordon Yorke wrote:
>
>>Hello,
>> When connected to a External Connection Pool TopLink Essentials
>>will not cache the connections.
>>--Gordon
>>
>> -----Original Message-----
>> *From:* Jagadish.Ramu_at_Sun.COM [mailto:Jagadish.Ramu_at_Sun.COM]*On
>> Behalf Of *Jagadish Prasath Ramu
>> *Sent:* Saturday, August 19, 2006 6:16 AM
>> *To:* dev_at_glassfish.dev.java.net
>> *Cc:* Kshitiz Saxena
>> *Subject:* EJB/ Toplink Query
>>
>> Hi,
>> We are planning to implement a feature "connection-leak-tracing
>> <http://www.glassfishwiki.org/gfwiki/attach/OnePagersOrFunctionalSpecs/ConnectionPoolOnePager.html>"
>> for connection pool.
>>
>> This feature will help to diagnose potential connection leaks.
>> (applications not returning connection to pool).
>> "connection leak timeout" property : If a connection is not
>> returned within "connection leak timeout", we report
>> that the connection is leaked.
>>
>> I think, EJB/ toplink caches the connections. If it is caching the
>> connections, connection-leak-tracing logic gets affected.
>> Can someone please provide more background on this ?
>>
>> Thanks,
>> -Jagadish/Kshitiz
>>
>
>
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