How to start and finish a transaction using EJB 3.0 in JDeveloper

Hello everybody!
Does anybody can explain how to start and finish a transaction using EJB 3.0. I need to start a transaction insert some information in some tables and if everything was fine commit the information.
I put the annotation @TransactionManagement(TransactionManagementType.BEAN) in my session bean and @Resource SessionContext ejbContext; but I don't what anything else I have to do.
Any help will be appreciate.

I tryied to use in the client the statement EntityTransaction transaction = myBean.getTransact(); but I receive the EJBException: Cannot use resource level transactions with a container managed EntityManager
I just need to start a transaction something like this: transaction.begin(); and finish the transaction, something like this: transaction.commit();
Does anybody can help?

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<oracle:restartServer
userid="${oc4j.admin.user}"
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/>
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This, however does not start and stop the SOA suite. To do that I've hacked this solution together -
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</target>
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     <java classname="oracle.appserver.startupconsole.view.Runner">
          <classpath refid="oc4j.console"/>
          <sysproperty key="ORACLE_HOME" path="${oracle.home}"/>
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</target>
This sort of works – except when the SOA suite doesn't stop cleanly – and needs user interaction to press a Close button. This isn't very useful when doing a continous integration build and deploy.
So, does anyone have any suggestions or alternative methods to do this?
- frank

Actually if the server throws exceptions when it stops (which it always has since we applied patch 10.1.3.3) this technique will pause until a user responds to pop-up ... So a better way (I think) is -
<target name="start" description="start oc4j server" depends="init">
<java classname="oracle.appserver.startupconsole.view.Runner">
<classpath refid="oc4j.console"/>
<sysproperty key="ORACLE_HOME" path="${oracle.home}"/>
<arg value="start"/>
</java>
</target>
<target name="stop" description="stop oc4j server" depends="init">
<echo message="We expect OC4J *NOT* to stop cleanly, so we will timeout after 3 minutes ..."/>
<java classname="oracle.appserver.startupconsole.view.Runner" fork="true" timeout="180000">
<classpath refid="oc4j.console"/>
<sysproperty key="ORACLE_HOME" path="${oracle.home}"/>
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</target>
<target name="restart" description="restart oc4j server">
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<waitfor maxwait="2" maxwaitunit="minute">
<not><http url="http://${oc4j.http.hostname}:${oc4j.http.port}"/></not>
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NI PCI 6225: How to start and stop an acquisition using triggers

Hi,
Hi already spent two days reading the previous post on start/stop trigger and end up with just a complet breakdown....
I'm using a NI PCI 6225 for a project on brain activity.
I want to start the aquisition of 10 channels at 1Khz on a first trigger (i.e. portline 0) and stop it on a second trigger (i.e. portline 1). The duration of the recording should not exceed 5min.
Any help will really be apreciated as well as some explanations. I'm not an expert but I do can understand if I'm being explained...slowly. I hope this post will not contribute additionally to the/my confusion on this topic....
Thanks for your attention and help,
OD

Hi,
Unfortunately, it is not possible to stop the acquisition with a second trigger (just start the task). There are some approaches to what you need, but not exactly the same. Please take a look to the next example.
http://zone.ni.com/devzone/cda/epd/p/id/5028
I think the only way to perform what you need will be by software and with all the consideration about timing that you should already know.
Regards,
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I have a Boolean button set to "Switch When Released" operation. When I press this button (now it's in the On state) I want to run a loop that does something continupously (for now, let's say it displays a simulated sine wave) until I press the button again (now the button is in the Off state) in which case, I want to end the loop. I am wiring my button to the loop condition that's set to "Continue if true" and have a "Wait Until Next ms Multiple" of 200 ms (I tried up to 500 ms). When I run the VI and press the button the first time, I see the sine wave displayed. But when I press the button again, nothing happens. It looks like it does not respond to the user interface. What's happening. What am I doing wrong? I'm using an Event Handler design pattern. I've also tried the Producer/Consumer (Events) design pattern. But I don't imagine the particular design pattern should make a difference. I've attached my code. Thanx.
Fataneh
Attachments:
My_Event_Handler.vi ‏107 KB

A simple solution would be to harness the timeout event, where you would put your data simulation. No need for parallel loops and local variables.
The event timeout is starts out as -1 (infinite) but pressing the start/stop button toggles between a 200ms and an infinite timout whenever it is pressed. Since the evet structure always runs, all other events (e.g. stop) are also serviced.
Please ask if anything is not clear... Good luck!
Message Edited by altenbach on 07-13-2005 04:20 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
My_Event_HandlerMOD_CA.vi ‏116 KB

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schedhelp,
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Hi,
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I tryied to use in the client the statement EntityTransaction transaction = myBean.getTransact(); but I receive the EJBException: Cannot use resource level transactions with a container managed EntityManager
I just need to start a transaction something like this: transaction.begin(); and finish the transaction, something like this: transaction.commit();
Does anybody can help?

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How to start and finish a transaction using EJB 3.0 in JDeveloper

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