Thursday, September 19, 2002, 9:31:47 PM, you wrote:
DS> He means UPDATE WHERE, which we don't support. The better way it to use
DS> SELECT FOR UPDATE, which is supported.
DS> If all you care about is a sequence generator, just use the one included
DS> with JBoss. The CMP example code that c
On Fri, 2002-09-20 at 13:20, David Jencks wrote:
> AFAIK Oracle xa is the only db that disagrees with our code that sets tx
> isolation.
No surprises there. :-)
--
Peter Beck BEng (hons) - Managing Director, Electrostrata Ltd.
http://www.electrostrata.com --+-+-+-+-- Experts in e-business an
: Re: [JBoss-user] Specifying isolation level
All jboss versions use the db default tx isolation level unless you set
it
explicitly in the config file.
AFAIK Oracle xa is the only db that disagrees with our code that sets tx
isolation.
Where did you get postgres-xa?? postgres doesn't suppo
ursday, September 19, 2002 11:26 PM
> To: [EMAIL PROTECTED]
> Subject: Re: [JBoss-user] Specifying isolation level
>
>
> You could have a bunch of properties per connection factory and per
> ejb-method that could be set just before a connection was enlisted in a
> transaction for
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of David
Jencks
Sent: Thursday, September 19, 2002 11:26 PM
To: [EMAIL PROTECTED]
Subject: Re: [JBoss-user] Specifying isolation level
You could have a bunch of properties per connection factory and per
ejb
Yes.
Pete Beck wrote:
> On that basis, wouldn't it be possible to configure two datasources, and
> just use different datasources for different beans?
>
>
> On Thu, 2002-09-19 at 18:26, Dain Sundstrom wrote:
>
>>Is this even possible? I don't think it is. Isolation level is an
>>attribute o
He means UPDATE WHERE, which we don't support. The better way it to use
SELECT FOR UPDATE, which is supported.
If all you care about is a sequence generator, just use the one included
with JBoss. The CMP example code that comes with the Quick Start Guide
uses it. Alternatively, you can use
Thank you for all your replies, but I'm still a bit confused WRT something
Floyd Marinescu writes in his EJB Design Patterns book. In it, he describes
the concurrency issues involved in a primary key generation pattern that
involves the use of a Sequence CMP bean.
I think he's saying that I c
On that basis, wouldn't it be possible to configure two datasources, and
just use different datasources for different beans?
On Thu, 2002-09-19 at 18:26, Dain Sundstrom wrote:
> Is this even possible? I don't think it is. Isolation level is an
> attribute of the connections and not the transa
You could have a bunch of properties per connection factory and per
ejb-method that could be set just before a connection was enlisted in a
transaction for the first time. Transaction isolation could be one of
these. Weblogic does something like this. I think it would be
ridiculously confusing
Is this even possible? I don't think it is. Isolation level is an
attribute of the connections and not the transaction, so unless we used
a separate connection for each bean we would not be able to have
different levels in the same transaction. If we did use different
connections for each b
Rereading the post you responded to I still think I explained the situation
fairly well. This feature has not been requested often (I think twice so
far). It's possible, but would require a fair amount of code, would
probably be extremely confusing to use, and doesn't seem to be a high
priority.
why there isn't a property at jboss.xml to define the transaction
isolation at ejb level, isn't it possible?
David Jencks wrote:
> You can only specify it per-datasource, not per-bean. Most dbs seem to
> commit or throw an error if you try to change the isolation level inside a
> transaction.
You can only specify it per-datasource, not per-bean. Most dbs seem to
commit or throw an error if you try to change the isolation level inside a
transaction. I guess it would be possible to include a tx isolation spec
with the method transaction specs, but I think it would be pretty
confusing,
I hope this isn't too dumb of a question, but how do I specify a
READ_COMMITTED isolation level for one of my CMP beans?
The QuickStart guide mentions the different isolation levels, but it doesn't
tell me how to specify them.
Thanks,
Jim
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