Why Threading is not allowed in EJB?

Hello,
I learnt that threading concepts is not allowed/used in EJB.
can u please post your view, regarding the above question.
Thanks

Good mourning...
EJB isn't used to web applications only, and also exist the Entity beans, the persistent beans and Message Driven Beans. EJB is a enterprise component that is deployed in Application Server. The AS harness the EJB instances amount. This amount is defined in ejb-jar.xml file. And, really, the EJB is thread-safety, thus only a client is connected in the specific time. For more and better information, read the Mastering EJB book, it's free download in theserverside.com, and this sections:
- Several Entity Bean Instances May Represent the Same Underlying Data (pag. 114);
- Entity Bean Instances Can Be Pooled (p�g 116).
treat this specific issue.
bye!

Similar Messages

Why am I not allowed to activate my product, CS3, when the product is bought years ago and I still have the serial number? It's an old version, but I don't throw products in the bin, just because they are old.

Why am I not allowed to activate my product, CS3, when the product is bought years ago and I still have the serial number? It's an old version, but I don't throw products in the bin, just because they are old.

And what exactly is your problem? Other than going of on a tangent about Adobe's alleged evilness preventing you to activate whatever CS3 product, you have not provided any useful info such as what exact problem you have, what system, what product we are axctualyl talking about and so on.
Mylenium

Why Mavericks do not allow us to connect to specific AP using BSSID?!

Why Mavericks do not allow us to connect to specific AP using BSSID?
After get a MAC, to stay connected to the internet at university have being a challenge. We have lots of AP with the same name and my computer keeps reconnecting to a different one. I can't changes the network preferences to a specific network name.
"airport --associate" is not an option.

Hello Sir Gudo,
Thank you for the details of the issue you are experiencing with your external hard drive. I found an article with steps you can take when an external device is not being recognized.
I recommend following the steps in the section titled "Top troubleshooting tips" in the following article:
USB and FireWire Quick Assist
http://support.apple.com/kb/HT1151
Thank you for using Apple Support Communities.
Best,
Sheila M.

When I try to use the Message feature on my iPad 2, to send a message to a friends iPhone (on iOS 5 too), why will it not allow me to send the message?

When I try to use the Message feature on my iPad 2, to send a message to a friends iPhone (on iOS 5 too), why will it not allow me to send the message?

Check to make sure you are not typing your message in the Subject line. If you are, it won't let you send the message. Cut and paste the message into the Message field and you should be all set.
FYI, you can disable the Subject line from your messages in Settings/Messages.

Does anyone know why FCP is not allowing me to share a video (47 sec or 18 sec) to facebook

Does anyone know why FCP is not allowing me to share a video (47 sec or 18 sec) to facebook?

Hi, is it one of these formats, in 16:9 aspect ratio, & smaller than the size it says on that page?
http://www.facebook.com/help/218673814818907/

Why Apple do not allow Bluetooth sharing between different devices even when I want to share something between apple devices I have to make sure that we have the same application

Why Apple do not allow Bluetooth sharing between different devices even when I want to share something between apple devices I have to make sure that we have the same application

We are users just like you and would not know why Apple makes teh decisions that they do , nor are we allowed to speculate about it here.
From the terms of use:
do not add Submissions about nontechnical topics, including:
Discussions of Apple policies or procedures or speculation on Apple decisions."

Why does adobe not allow upgrades to boxee box

why does adobe not allow upgrades to boxee box

There are many ways of stripping metadata. Not sure how "locking" it would be of any use.

Why does apple not allow 3D

A statement from the Smithsonian: "....iPad. Although these devices technically fully support 3D graphics in the web browser, due to a restriction of Apple it is not currently possible to use the Smithsonian X 3D explorer on iOS devices." Why does Apple not allow Smithsonian X 3D to run on MAC iOS devices? It runs on other OS such as Android etc.

John,
If you know so little about the topic why even respond? Just to take sides? How do you even know your on the right side? Because you bought an iDevice and must obey your master?
Firstly 63% of video on the web is not HTML5. There is no such thing as HTML5 video.
HTML has a new tag called <video></video>. This tag allows the playback of videos converted to a specific codec. In safari it is h.264, in chrome it is VP8, in firefox it is OGG.
Each browser can only handle their codec, so a video that runs in the enw <video> tag in safari will not run in chrome or firefox unless another video is also present that has been converted to the correct format.
Adobe Flash can play all of them, or any one of them in any browser. Or you can just use .flv and have only one video that plays everywhere.
As such Adobe Flash plays back h.264 video, and has been doing so way before anyone heard of HTML5. Most hardware today has built in support for this codec as well, making it the best performig codec to be used for video.
With or without HTML5, h.264 is and has been becoming the "standard" codec for all video.
So to say 63% of video is HTML5 is a half truth. If you only cinsider safari then yes, 63% of the videos that flash plays can also be played in safari. However that same 63% can not be seen by anyone else as they require a different codec.
This says that h.264 is the dominant codec, because 63% of all video uses it. However you still need to support the other 37% of video which is not h.264, and you still need to support the other 63% of video for those who dont use safari.
The best option to bring all this together is Flash. It's the one stop shop for all video across all screens.
And Flash out performs HTML5 players 10 to 1 on every product on the planet except Apples.... where it somehow becomes a huge resource hog.... but then that may have something to do with Apple not wanting any media consumption to come from anywhere than their pocket.

Why does Apple not allow me to Change "Siri's" name on the I5?

Why does Apple not allow me to Change "Siri's" name on the I5 (NOT how, but WHY)?

No one here can address a question as to "why" Apple does anything.

Why am I not allowed to post here?

I just tried to post a question and got "You are not allowed to post or edit this content". What and why ?

rccharles wrote:
and have yet to be logged out
You have pull. I haven't been so lucky. I've been logged out even with reloadevery -- reload failed. I'm now reloading my profile.
https://discussions.apple.com/people/rccharles?view=discussions
Robert
IF I have pull, I sure would like to use it on other stuff. No pull just a regimen that works 100% of the time
Try this, works 100% of the time, IF you follow this EXACT WorkFlow... (the numbered list assume receiving an email notice)
    Go to your forum of choice Main Page (this will become your 'Base Camp' page)
    click Login, which takes you to the Login page
    Browser Bookmark that Login Page
    click [Sign In]
        you are now logged in and have started a 'timer' in a set cookie
        you will be logged off without notice after ±30 minutes of inactivity
        clicking a Link that is NOT a JavaScript link resets the timer in the cookie
        I use a browser add-on that reloads the Base Camp page every 20 minutes = NEVER logged off by the timer
        - DO NOT close the TAB,    the AutoReloader is tied to the TAB not the page itself
            Safari - SafariTabReloader
            Firefox - ReloadEvery: "Reload web pages automatically"
    Switch to your email client or WebMail page**
    Click the link to Reply
    AutoSwitches to browser, thread page & post to which you are replying = Login State = TRUE
    If you use an AutoReloader, all you need do the rest of your browser session is repeat #5 & #6
Vary from this WorkFlow by clicking reply in the email FIRST and all bets are off... you will experience login failed on that page but logged in on another... 100% of the time with that particular email notice - I have not found the workaround or cause
** OR CMD+click a link on BaseCamp page to open in a new TAB
https://discussions.apple.com/people/rccharles?view=discussions = VERY empty below the TAB bar and above the footer
https://discussions.apple.com/people/rccharles = normal Bio page
https://discussions.apple.com/people/ChitlinsCC?view=discussions = VERY empty below the TAB bar and above the footer
where did you come up with the " ?view=discussions " in the URL? I have never seen this advised... certainly not the plain ol' " /content " addition nor is it tt2's Magic Twangers. Are you trying to force something to happen that never will? It is a wonder you don't get a 404.Not Found error!!
CCC

Why I'm not allowed to create post in support of apple online?

Trying to post a question, but seeing a message that I'm not allowed to do that, Why?
Thanks

You seem to have sucessfully posted here today:
How to delete "Other" data on MacBok Air?
Are you trying to make a different post?
Understand the forums have been ill-behaved for several months since the major format change and we all see spurious error warnings and occasional failures to post. Sometimes you have to wait a few minutes and try again.

Why am I not allowed to save a file with an Admin account?

I'm right to administrate the cpu (a tick in the box of user account), but I'm not allowed to save a file (like php.ini or .bash_profile when opened with textmate or textEdit, even using nano). Does anyone have some ideas about that? May I have a hint or a link toward a result?
Thank you for your help,
Patweb
OSX 10.6.8 on new iMac 27" (last generation)

The php.ini file can be accessed by various file paths, including via its traditional /etc/php.ini location and by the /private/etc/php.ini path referenced in this thread, and this is a protected system directory, and the files in this location can only be modified with root access (whether via sudo or with the root user when enabled) or by reconfiguring the access control lists or protections on the files and directories to allow access.
To locate the file, use the locate command:
$ locate php.ini
/private/etc/php.ini
/private/etc/php.ini.applesaved
/private/etc/php.ini.default
/private/etc/php.ini.server-default
$
For details on the Mac directory and file structure layout, there is a write-up here; that goes into the various directories that exist on Mac OS X and Mac OS X Server.
While I am well aware a user should not require sudo to access files in a user's home directory, there are cases where a user is accessing .bash_profile in other users' directories, and this too can require sudo. I've also encountered mis-protected login directories, though these are less common.
The setup that OP was encountering appeared to be triggered by standard system security, and these sorts of details are discussed in the security manuals for the various releases, as well as the directory and file system link above.

Why will it not allow me to create an adobe new user id for my new program

I'm not sure why it won't allow me to create a new user id account. I just purchased the bundle package adobe photoshop elements 8 and premiere elements 8 for my HP laptop online. I keep getting an error 400 message.

Can you confirm that at the time of creating your AdobeID you are connected to internet? As I expect this error message is appear only in case if you are not connected to internet. So please check it again.
Thanks,
Vinod

Why is "Do Not Allow License Request" disabled?

I have a Dev Suite w/Automated Test Named-User license assigned to me that I typically like to keep reserved for my main dev computer. I have a test station computer that has a computer-based LV 8.6 and a computer-based Test Stand Dev System license. Unfortunately the test station computer always uses my named-user license unless it is already being used by my dev computer.
According to documentation I'm supposed to be able to use NI License Manager to prevent the test computer from checking out my named user license using the "Do Not Allow License Request" option, but it is always disabled. Any ideas?

DevSuite comes with Labview Professional so I don't know what the difference between "DevSuite Standard" and "DevSuite Professional" is. Regardless, we have Developer Suite 8.3 with Image Acquisition and Machine Vision and Automated Test.
Setup Details:
Both computers (my dev comp and the test comp) are connected to the network.
I'm logged on to both computers using my network credentials.
I have a named-user DevSuite 8.3 license assigned to me.
The test computer has a computer-based Labview 8.6 Full Dev System with Mathscript license and a computer-based TestStand 4.1Dev System license assigned to it.
I believe the test computer LV installation was done using a network DevSuite installer. (I suspect that's the root of the problem.) I don't know if the test computer's TestStand installation was done using the DevSuite installer or a TestStand installer.
VLM Results:
Starting TS on my dev computer first uses the DevSuite license.
Starting LV on my dev computer first uses the DevSuite license.
Starting TS on the test computer uses the computer-based TS license.
Starting LV on the test computer incorrectly uses the DevSuite license.
I suppose if I ran the regular LV installer on the test computer it would switch over to that license instead of my DevSuite license. Ideally there would be a way to define which license to use if more than one valid license is available. (Command line switches?) 98% of the time I want the test computer to use the LV Full license, but there's that 2% of the time when I need to use the DevSuite on it.

Why SELECT is not part of EJB transaction

Hi,
We observed the peculiar behaviour in 9iAS 9.0.3.1. One of our Bean method has SELECT statement(that run for 15mins - too long) and INSERT statement follows. The transaction-timeout set to 5 mins in SERVER.xml. The server instead of timing out after 5 mins(once the transaction started), times out only after completion of SELECT and at the time of INSERT.
This throws open the question, why SELECT is not part of the transaction?

Just thinking here, but from what you describe, the duration of the EJBSelect is what is causing the timeout on the tx to occur and therefore it is part of the TX.
You do a 15min EJBSelect as part 1 of the tx. It completes and the server basically then flags the TX as timed-out.
When you next perform an operation within the same TX, you get the tx timeout. So the cause of the tx timeout is the (long!) EJBSelect?
Or are you actually expecting to get a TX timeout notification occur during the EJBSelect operation, before it completes?
-steve-

Why Threading is not allowed in EJB?

Similar Messages

Maybe you are looking for