Do I need to and how to uninstall older version of JDK 7.0

Hi,all I have installed both JDK 1.7 update 21(1.7.0.210) and 51(1.7.0.510), and so I wonder do I need to uninstall the older version which is JDK 1.7 update 21, as they both show up in the list of `Programs and Features` on Windows. Second, I tried Java Uninstall Tool, it only reports `There are no older versions of Java on your computer`. So I wonder can I just use the `Programs and Features` that manually uninstall any version of Java if I need to.
cheers

daiyue wrote:
As I also set up `JAVA_HOME` to `jdk1.7.0_21` when I tried to install Android Developer Kit, so do I need to update `JAVA_HOME` accordingly? The installation was tricky, and I don't know if it is this setting up `JAVA_HOME` step made the ADT installation work.
If the installation instructions of this product require setting a JAVA_HOME variable then yes, otherwise no.
Trying is certainly a good teacher, but I'd rather read documentation first to at least make it educated tries.

Similar Messages

  • How to Uninstall older version of Final Cut and Motion

    Hello
    I have a older academic version of Final Cut and Motion. I ordered a Full blown version of Final Cut Studio 2 that should arrive this week. How do I uninstall my old version of software? I don't want them conflicting with the new version.
    My other question deals with performance. I'm running a Dual 2.5GHz G5 with 6G of ram. Video Board is the ATI x800XT. Will this system work for editing HDV or am I going to need to buy a new Intel based computer? I really don't want to spend 4K for a new system.
    Thanks
    Bob M

    have a gander a Jon Chappel's FCS Remover over at Digital Rebellion
    http://www.digitalrebellion.com/fcs_remover.htm

  • How to uninstall older version of iTune? Lost a file name iTune msi

    Hi, I wanted to update newer version of iTune. But was not able to due to some files missing.
    Under the windows installer, path to this file name iTune MSI was not able to detect.
    Any advise to skip this step & uninstall?

    check if you have read & write permissions for your music folder. in the finder, right-click on it and get info. unlock the little padlock (you may have to enter your admin password) and change the permission settings if necessary. next, click on the little gear-shaped icon and apply to enclosed items like so
    the important part is to apply to enclosed items !
    also, even if it seems unrelated, try the steps in this support article: iTunes: Missing folder or incorrect permissions may prevent authorization

  • When I upgraded to the newer version of Firefox my add-on no longer showed at the bottom. How do I get the add-on to show at top and bottom? Do I need to go back to an older version?

    I upgraded Firefox to the newest version (4 I think it was from 3). Now my "add-on" no longer appears"at the bottom" of the screen, only at the top. Do I need to go back to the older version in order for the add-on to show at top and bottom? If so, how do I do that if I decide to do it?

    Your UserAgent string in Firefox is messed up by another program that you installed, and those websites don't know you are running Firefox 3.6.3 (which is what you do have installed).
    [http://en.wikipedia.org/wiki/User_Agent]
    type '''about:config''' in the URL bar and hit Enter
    ''If you see the warning, you can confirm that you want to access that page.''
    Filter = '''general.useragent.'''
    Right-click the preferences that are '''bold''', one line at a time, and select '''''Reset''''',
    Then restart Firefox

  • ROLLBACK SEGMENT NEEDS RECOVERY AND HOW TO RESOLVE IT

    제품 : ORACLE SERVER
    작성날짜 : 1995-02-06
    Subject :
    This article discusses what it means when a rollback segment needs
    recovery and how to resolve it.
    OVERVIEW
    This bulletin discusses why a rollback segment is the status of
    "needs recovery", what the status means, and how to resolve it.
    INTRODUCTION
    Rollback segments can be monitored through the data dictionary view,
    dba_rollback_segments. There is a status column that describes what state
    the rollback segment is currently in. Normal states are either online or offline.
    Occasionally, the status of "needs recovery" will appear.
    This is considered to be a corrupted rollback segment.
    When a rollback segment is in this state, bringing the rollback segment
    offline or online either through the alter rollback segment command or
    removing it from the rollback segments parameter in the init.ora usually has no effect.
    UNDERSTANDING
    A rollback segment falls into this status of needs recovery whenever
    Oracle tries to roll back an uncommitted transaction in its transaction
    table and fails.
    Here are some examples of why a transaction may need to rollback:
    1-A user may do a dml transaction and decides to issue rollback
    2-A shutdown abort occurs and the database needs to do an instance recovery
    in which case, Oracle has to roll back all uncommitted transactions.
    When a rollback of a transaction occurs, undo must be applied to the
    data block the modified row/s are in. If for whatever reason, that data
    block is unavailable, the undo cannot be applied. The result is a
    'corrupted' rollback segment with the status of needs recovery.
    What could be some reasons a datablock is unaccessible for undo?
    1-If a tablespace or a datafile is offline or missing.
    2-If the object the datablock belongs to is corrupted.
    3-If the datablock that is corrupt is actually in the rollback segment
    itself rather than the object.
    HOW TO RESOLVE IT
    1-MAKE sure that all tablespaces are online and all datafiles are
    online. This can be checked through dba_data_files under the
    status column. For tablespaces, look in dba_tablespaces.
    If that still does not resolve the problem then
    2-PUT the following in the init.ora-
    event = "10015 trace name context forever, level 10"
    Setting this event will generate a trace file that will reveal the
    necessary information about the transaction Oracle is trying to roll
    back and mostimportantly, what object Oracle is trying to apply
    the undo to.
    3-TAKE the corrupted rollback segment out of the rollback_segments parameter in the init.ora
    4-SHUTDOWN the database (if normal does not work, immediate, if that does
    not work, abort) and bring it back up.
    Note: An ora-1545 may be encountered, or other errors, that is ok.
    5-CHECK in the directory that is specified by the user_dump_dest parameter
    (in the init.ora or show parameter command) for a trace file that was
    generated at startup time.
    6-IN the trace file, there should be a message similiar to-
    error recovery tx(#,#) object #.
    TX(#,#) refers to transaction information.
    The object # is the same as the object_id in sys.dba_objects.
    7-USE the following query to find out what object Oracle is trying to
    perform recovery on.
    select owner, object_name, object_type, status
    from dba_objects where object_id = <object #>;
    8-THIS object must be dropped so the undo can be released. An export or
    relying on a backup may be necessary to restore the object after the corrupted
    rollback segment goes away.
    9-AFTER dropping the object, put the rollback segment back in the init.ora
    parameter rollback_segments, removed the event, and shutdown and startup
    the database.
    In most cases, the above steps will resolve the problematic rollback segment.
    If this still does not resolve the problem, it may be likely that the corruption is
    in the actual rollback segment.
    At this point, if the problem has not been resolved, please contact
    customer support.

    Yes we were having the performance issues when it is getting locked? in this what i want to know
    why it happens suddenly?
    or what package this piece of code is calling?
    or is there any possiblity of system will degrade the performance like sys user etc...?
    where exactly i found the root cause for further analysis?
    so that next time onwards if particular objects is locking we come to know why it happens is there any logical false or how do we eliminate this issue last time?
    coz in our environment sometimes most of lockings are from the same table?
    pls let me know where i have to concentrate for debug and how to troubloshoot and reslove this
    sorry for the inconvience.. i m expecting the answer from here. if anybody wants some more info i ll let him know.
    as of till now i got some docs i start to read this.
    Regards
    M.Murali..
    Note: will system/sys degrade the performance ?if so how ?

  • When i try and update my itunes to the version needed for ios7, it says my older version of itunes can not be uninstalled.

    when i try and update my itunes to the version needed for ios7, it says my older version of itunes can not be uninstalled.
    it's annoying me now as it won't let me put music on my phone.

    Download iTunes here: http://www.apple.com/itunes/download/
    If you're trying to connect your iPod to a new computer that doesn't have your iTunes library on it already then see Recover your iTunes library from your iPod or iOS device.
    tt2

  • I have mac book pro , in my memory lot of others storage is there  example 500 out of 286 9 it is in , how can i delete, i need space , and how i can view

    i have mac book pro , in my memory lot of others storage is there  example 500 out of 286  it is in others memory , how can i delete, i need space , and how i can view

    pls reply me

  • How do I uninstall older versions of Adobe Reader, when they cannot be removed from the Control Panel?

    How do I uninstall older versions of Adobe Reader 9.4.4 from the Remove
    Programs in the Control Panel?

    You can use the Acrobat Cleaner Tool from http://labs.adobe.com/downloads/acrobatcleaner.html
    This will remove all versions of Adobe Reader and Acrobat.

  • How do you uninstall older versions of labview

    How do you uninstall older versions of labview and all their components, registries etc?
    Solved!
    Go to Solution.

    If you're looking to get a more through uninstall, then Revo Uninstaller is a good way to go. That will run the regular NI uninstallers and then search for leftover registry entries and files. You can also use MSI Blast.

  • Replacing Firefox 3.6.16 containing my history, bookmarks etc by version 4.0, I find that it will not open on my Mac Power PC G4 running on OS 10.4.11. Is there is a compatibility problem and how do I retrieve version 3.6 with my bookmarks etc

    Replacing Firefox 3.6.16 containing my history, bookmarks etc by version 4.0, I find that it will not open on my Mac Power PC G4 running on OS 10.4.11. Is there is a compatibility problem and how do I retrieve version 3.6 with my bookmarks etc.

    Firefox 4 requires at least OS X 10.5 and an Intel Mac. There is a third party version of Firefox 4 that runs on OS X 10.4/10.5 and PPC Macs, for details see http://www.floodgap.com/software/tenfourfox
    If you prefer, you can get the latest version of Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html
    When you install one of the above it will use your existing bookmarks etc

  • How to uninstall trial version of Adobe Acrobat Pro from a mac?

    I installed a trial version Adobe Acrobat Pro from the Creative Cloud list on my Mac Pro 10.7.5. First, although I was supposed to have a 30 day free trial, it expired immediately. Worse, every time I try to open my former Adober Acrobat, I get prompted to buy a yearly subscription to Acrobat pro and cannot use my older version. I have tried various ways to uninstall the Acrobat Pro version and to get back to normal, with no success. Anyone out there to help or must I spend money on an international call to ask Adobe what to do? It seems that they have shut down their "chat" service. Any help will be appreciated. Thank you. Robert

    This is not a Technical Communications Suite product. If this is AE CS4 you can try the CS4 Clean Script:
    http://www.adobe.com/support/contact/cs4clean.html
    If that fails, try the Microsoft Installer Cleanup Tool.
    If that fails try the AE forum.

  • I downloaded  reader 11.3, do i need to uninstall older versions ?

    i downloaded reader 11.3 ,do i need to uninstall older versions ?

    If you have Reader 10.x or 11.x installed, there is no need to uninstall.  Older, or much older versions should be uninstalled before installing a much newer version.
    [topic moved to Adobe Reader forum]

  • How do you uninstall older version of i tunes

    how do you uninstall older version of i tunes?

    go to Control Panel
    then hit programs
    then uninstall iTunes
    By the way, you spelled laptop wrong you spelled it like this,labtop
    Ipod touch/james

  • Uninstall older versions of Flash Player?

    I just installed the latest update for Flash Player...can I now uninstall older versions?

    Yes, you can.
    It is best to use the uninstaller from Adobe. It is on this page:
    http://http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html
    Follow the instructions.
    Because I am having problems with getting Flash Player that works on my pc, I have saved the Adobe Flash Player Uninstaller to my desktop. It is helpful not having to go back to the Adobe page to get it when I need it.
    After uninstalling old versions of Flash Player, remember to check that the new version you keep is installed correcly and working properly, go to the Adobe "Find Version" page and follow the instructions there.
    Here:
    http://http://helpx.adobe.com/flash-player/kb/find-version-flash-player.html#main_Find_the _Flash_Player_version_installed_on_your_machine
    Hope this helps.

  • Cannot install Adobe Reader 11.0.09  and Asian Fonts over older versions

    I'm using a script to install Adobe Reader 11.0.09 and it works sometimes, but very often, there is an error saying it cannot install it because a previous version exists.
    We have to manually uninstall older versions of Adobe Reader 11 and then re-run the script and then it works.
    @echo off
    cls
    start /wait msiexec.exe /i \\appserver1\Apps\AdobeReader\11.009\AcroRead.msi /qb TRANSFORMS="\\appserver1\Apps\AdobeReader\11.009\AcroRead.mst"
    start /wait msiexec.exe /i \\appserver1\Apps\AdobeReader\11.009\fonts\FontPack11009_XtdAlf_Lang.msi /qb
    How can we change this script so that it will force installation over any previous version?
    By the way, the installation was created with Adobe Customization Wizard and has settings enabled to remove any previous versions of Adobe Reader.  So, the problem with installing over existing version could be from the Font Pack installation,

    What does the verbose installation log say?

Maybe you are looking for