How to make toplink reconnect to the Database in java SE

I have use toplink JPA in java SE.
I found a problem with using connection pool in toplink:
If the network connection is disconnect and Even if it is reconnect right away.
Then the connection to the Database can not be use;
So I should restart my java SE application to reconnect to the Database.
How can I make the toplink to reconnect to Database so I need not restart my java SE application
My english is poor. am I clear?
thanks for you help.
merry christmas

TopLink has an ExceptionHandler interface you can implement and register the instance. This allows you to capture the failure when the connection dies allowing you to re-connect it and possibly retry a read query.
What edition and version of TopLink are you running?
Doug

Similar Messages

  • How to make JDev aware of the xmldb API

    Hi everybody,
    I am a real beginner in Jdev, and I have to develop a
    Java Application using Oracle Java developer, against
    an XML-native database called eXist. I'll have to use
    a java API called xmldb supported by eXist in order to
    interact with the database. Although I have basic
    knowloedge in Object-oriented programming, but I don't
    know where to begin, especially how to make JDev aware
    of the xmldb API, and how to create classical
    application components (Windows, buttons, etc).
    Could you help me with some orientations and
    interesting links?.
    Thanks a lot.
    Mounir.

    Hi,
    don't know this database, but the database vendor should be able to explain how his DB is accessed from Java. If this requires libraries, then the vendor will provide these in JAR files, which you then configure with JDeveloper (as a custom library Tools --> Manage Libraries) or in the Project
    If there is a JDB driver for it, even better. This however is not a deliverable of JDeveloper but the database vendor
    Frank

  • Can Virtual Machin system make negative impact to the database performance?

    Can Virtual Machin system make negative impact to the database performance?
    I want to make a virtual machine system in my server and then install Oracle 10g database on the virtual machine system. But I am not sure if Virtual Machin system can make any negative impact to the database performance.
    Thank you

    The virtual machine software vendor must have certified and provided some performance figures like running Oracle on our VM would have a performance hit of n%. VMWare has such a figure published (8% if I recall correctly).
    Besides, the load on physical server, apart from the virtual machine running, would also have the impact on performance.
    Other factors would be
    1. how quickly the host OS can cater to the guest OS with the RAM requirements (it would be good if you could pre-allocate RAM to VM)
    2. with the assumption that you will be running an OS within OS, files on host OS forming the VM, should be pre-allocated in terms of space, avoiding runtime extentions.

  • How to make text start at the top of a page in livecycle 9

    Hi, How can I get the text in a large text field to start at the top left of the field rather than at the center of the field? In addition, may one know how to make text wrap in the form as well?
    Thanks,
    David

    To set the Text alignment properties use "Paragraph" pallet you can make it visible by selecting Window>>Paragraph or Shift+F5
    And to allow text wrapping you need to select "Allow Multiple Lines" checkbox under "Object" pallet and "Field" tab. You can make Object pallet visible by selecting Window>>Object or Shift+F7.
    Good Luck,

  • I subscribed for itunes imatch - it works perfectly on my i-pad and iPhone - however on my macbook - my iTunes can no longer find my songs - i don't know how to make it look to the cloud to play my music

    i subscribed for itunes imatch - it works perfectly on my i-pad and iPhone - however on my macbook - my iTunes can no longer find my songs - i don't know how to make it look to the cloud to play my music - i think it keeps trying to find on the external harddrive where i used to keep my music

    Of course iTunes is looking for the music on the external HDD. Enabling iTunes Match does not magically change the location of the iTunes library to the cloud.
    To play the music either plug the external HDD back into your computer or create a new, empty library to use for streaming the iTM content. The latter can be accomplished by holding down the Option key when launching iTunes, choosing "create library" then enabling iTunes Match on the new library. DO NOT have iTunes scan your HDD for music.

  • How to find out  Locks on the database objects

    how to find out Locks on the database objects

    The following notes should be helpful:
    Note: 200590.1 - bde_session_locks.sql - Locks for given Session ID
    https://metalink2.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=200590.1
    Note: 1039273.6 - SCRIPT: VIEWING LOCKS ON OBJECTS HELD BY SPECIFIC USER
    https://metalink2.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=1039273.6
    You can also search Metalink, there are many notes/scripts published there which would be also helpful.

  • How to make users to select the date from calendar control my making the date field read only in date time control in external list in sharepoint 2010

    How to make users to select the date from calendar control only, by my making the date text field read only (don't want to let users type the date) in date time control in external list in sharepoint 2010. I am looking for a solution which can
    be done through sharepoint desginer / out of the box.
    thanks.

    Congratulate you got the solution by yourself. I am new to a
    WinForms calendar component, I feel so helpless on many problems even I'd read many tutorials. This question on the
    calendar date selection did me a great favor. Cheers.

  • How to make a restart of the workflow in a process controlled workflow?

    Hi Experts,
    How to make a restart of the workflow in case of process controlled workflow? Scenario is like this:
    The user has created a shopping cart with 1000 USD. The process schema has three process level with the first level being approval with completion.
    The first level being executed by the responsible purchaser. Here, the purchaser adds the source of supply and changes the price of the shopping cart 2000 USD and approve the shopping cart.
    Now, I want the approval task to start from beginning so that the requestor can know the changes and accept/reject the changes.
    Thanks and regards,
    Ranjan

    Hi,
    Restarting workflow goes to 1st level approval step. It is not requester.
    I think you need to set condition for "Acceptance by Contact Person" in Define Process Level.
    Regards,
    Masa

  • How to save a fmb in the database thru command prompt?

    Hi,
    How to save a fmb in the database thru command prompt?
    I have around 25 fmb template files which needs to be saved in the database.Every time when we apply the new dump , we need to resave the templates in the database to compile other application related fmb files.Its a time consuming process and Monotonous for me. Is there anyway to save the forms in the database thru batch file, so that just I have to execute the batch file every time.
    Expecting your earliest feedback.
    Thanks & Regards,
    G.S -
    [email protected] / [email protected]

    Hi Frank,
    Thanks for your feeback.
    I am using forms6i.Basically our application was migrated from 4.5 to 6i two years back. Due to some reasons our technical team members are insisting us to store the template FMB's into the database to do the coding activities at site.
    Once in a month we are receiving the live dump for test database.Hence the problem.
    Please suggest the easiest way to store the template FMBs in the database.
    Thanks & Regards,
    G.S

  • How to make a backup if the Storage & Backup icon is missing?

    how to make a backup if the Storage & Backup icon is missing?

    http://www.apple.com/icloud/setup/ios.html
    Sounds like you have an account, so two options I would say.
    Try turning it off, then off and see what options you get, or sync your phone to iTunes and click on the summary and choose the iCloud option.

  • How to search a string from the database?

    how to search a string from the database? starting with some character

    If you're trying to do this in a SELECT, you can use the LIKE verb in your WHERE clause.
    Here's an Example
      SELECT obj_name FROM tadir
        INTO prog
        WHERE pgmid = 'R3TR'
          AND object = 'PROG'
          AND obj_name LIKE 'Z%'.
    In this case it will select every row that obj_name starts with Z. 
    If you wanted to find every row that the field obj_name contains say... 'WIN'  you use LIKE '%WIN%'.
    Edited by: Paul Chapman on Apr 22, 2008 12:32 PM

  • How to know which table in the database a form is accessing

    Actually Im new to oracle applications,
    Im getting an error when i open a form from system administrator responsibility saying that table doesnot exist.
    My basic doubt is, how to know which table in the database a form is accessing.
    Any response is higly appreciated.
    Thanks,
    Praveen
    Edited by: user10239520 on Sep 10, 2008 7:07 AM

    Take a look at the following thread:
    Is there a query log in EBS?
    Re: Is there a query log in EBS?

  • How to select alternate entries from the database table

    Hi Experts,
    can u help me, how to select alternate entries from the database table.
    Thanks

    As there is no concept of sequence (unless there is a field specifically included for the purpose), there is no meaning to "alternate" records.
    What table do you have in mind, what data does it hold, and why do you want alternate records?
    matt

  • How to change a connection with the database in Runtime?

    How to change a connection with the database in Runtime?
    My connection was made using ADF Business component (ApplicationModule).
    ADF Swing.
    JDeveloper Studio 11.1.1.4.0.

    When deploying ADF applications with database connection, you should be using JDBC data sources configured in the weblogic server.
    You could change the JDBC data sources to a different DB instance or location - by changing the JDBC data source and restarting the weblogic server.
    For more details, check
    http://techiecook.wordpress.com/2010/12/02/oracle-weblogic-adf-datasources/
    Thanks,
    Navaneeth

  • How to make every account in the system login automatically?

    How to make every account in the system login automatically when Mac OS X startup?
    Thanks!

    I can see one way to do it. You'll need to install a script in each user account, and have it set as a login item for each user. Let's imagine you have three user accounts. Each user in Mac OS X has a UID number. Normally your first user has the UID of 501, the second one will be 502 and so on...
    You can determine the UID by running the following AppleScript while logged in on each user:
    do shell script ("ID")
    This'll return a long block of text, but right at the start you'll see the UID number. Let's assume your three users have the UIDs 501, 502 and 503. We begin with 501.
    Create the following script and save it as an application while logged in as 501. Note that the password you're entering is the password for UID 502. Also note that the forum system is creating line breaks where there shouldn't be any. The long "do shell script" line should be one line.
    delay 5 --This delay allows time for login to complete, but it may not be necessary.
    try
    do shell script "/System/Library/CoreServices/Menu\\ Extras/User.menu/Contents/Resources/CGSession -switchToUserID 502"
    delay 5 --This delay could be shorter or longer, depending on how fast your machine is.
    tell application "System Events"
    keystroke "password for 502" --the password for UID 502
    keystroke return
    delay 1
    end tell
    on error
    display dialog "Unable to switch user."
    end try
    Open System Preferences, go to Accounts, click "login items" and drag your script (saved as an application) to the login items window.
    You basically repeat this process for each user account, modifying the script so it switches to the next user.
    This isn't ideal, because your passwords will be stored in the scripts, and each user could open the scripts and learn the passwords of the other users on that machine.
    I picked some of this up from a discussion over at the Macworld forums:
    http://hints.macworld.com/article.php?story=20031102031045417
    Message was edited by: The Preacher
    Message was edited by: The Preacher
    Message was edited by: The Preacher

Maybe you are looking for

  • My ASA5540 8.2.4(4) can not monitor and failover on certain interfaces

    the story is we configure the monitor interface  inside monitor interface  outside monitor interface  partner and save configue but when i show run monitor-interface the configure do not show the 3 montitor interfaces, it only show other monitor inte

  • Why are the dimensions of my slice being reduced by 'Save for Web'?

    Hey When I create a slice and then select 'save for web' the selection i'm trying to save is reduced in size. Originally I only noticed this when I was finding the saved file in the folder, but I now I notice that in the preview of the save for web m

  • Problem with TGA+Alpha

    I'm trying to export an image sequence (tga) with alpha channel but when it finishes the result is an image without alhpa channel. I don't see the option Milions of colors+ nowhere. How can I export TGA with alpha channel?

  • How to view DHCP lease from ISP on a 2811

    I have a remote site on a 2811 IOS 12.4(15).  Interface FA 0/0 faces the ISP and is set for DHCP.  What command can I run to see all of the information given out with the IP lease from the ISP?  I need to find out what the IP address of the DNS serve

  • InDesign CS5.5 crashing on startup

    Every time I try and open InDesign, it crashes at the "Initiating plugins" stage. I've tried deleting/moving certain plugins, getting the Adobe plugins update, everything I've found online. Nothing seems to work. Help!