What is locks

hi
What is locking and why formbuilder puts a lock on every record before update and insert or delete What the use of it
prasanth a.s.

Asuri,
if you don't lock a record for update, what would happen if two people try and update the same record at the same time? You do this for data safety and its a database feature.
Frank

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  • How to use lock object? what we lock either total ztable or only record?

    Hi
    How to use lock object? what we lock either total ztable or only particular record?
    Don't tell create lock object on se11 with E letter & acll it in program with eENQUEUE & DEQUEUE.
    just tell me we will lock only particular record or total ztable?
    specify with example.
    Thanks.

    Hi
      Go to SE11, in the option 'Lock object' enter the name of your lock,
    begin with 'E', suppose 'EXXXX' And create. In tab 'Tables' fill the
    table name where the record you want to lock exist and select the
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  • Hi gurus what is lock objects in datadictionary ,can explain with example

    hi gurus what is lock objects in datadictionary ,can explain with exple

    Lock objects are use in SAP to avoid the inconsistancy at the time of data is being insert/change into database.
    SAP Provide three type of Lock objects.
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    the locked area of the table
    Write Lock(exclusive lock)
    protects write access to an object. The write lock allows other transactions neither read nor write access to
    the locked area of the table.
    Enhanced write lock (exclusive lock without cumulating)
    works like a write lock except that the enhanced write lock also protects from further accesses from the
    same transaction.
    You can create a lock on a object of SAP thorugh transaction SE11 and enter any meaningful name start with EZ Example EZTEST_LOCK.
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    Example: in HR when we are enter a personal number in master data maintainance screen SAP can't allow to any other user to use same personal number for changes.
    Technicaly:
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    2. DEQUEUE_<Lockobject name>. To remove the object is being queued through above FM.
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    Here is a Link with good example
    Lock Objects
    Look the following Links for additionl info.
    http://help.sap.com/saphelp_nw04/helpdata/en/c2/2d7037ecc92a7ee10000009b38f8cf/content.htm
    http://help.sap.com/saphelp_nw70/helpdata/en/cf/21eea5446011d189700000e8322d00/content.htm
    http://articles.techrepublic.com.com/5100-6329_11-5066352.html
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  • What is Locked Down mode?

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    Thanks!

    Yi wrote:
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    >
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  • What is lock table

    what is lock table

    Hi
    1)Go to se11 transaction.
    2)Click on lock object radio button and give a lock object name starting with 'E'.For example 'ESAMPLE'.Click CREATE.
    3)In the TABLE tab, you can give the table name for which you require a lock.In the LOCK PARAMETERS tab,you can give the table fields based on which the table should be locked.
    4)Call a function module in your program ENQUEUE_lockobjectname to obtain a lock on the required table.In our example the FM will be ENQUEUE_ESAMPLE.
    5)To release the lock on the table,call the function module DEQUEUE_lockobjectname.In our example the FM will be DEQUEUE_ESAMPLE.
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    testing the locking of tables...
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    varkey = sy-mandt.
    locking the tables............................
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    exporting
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    varkey = varkey
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    X_VARKEY = ' '
    _SCOPE = '2'
    _WAIT = ' '
    _COLLECT = 'X'
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    system_failure = 2
    others = 3
    case sy-subrc.
    when 1.
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    when 2.
    message i184(bctrain) with 'system failure'.
    when 0.
    message i184(bctrain) with 'success'.
    when others.
    message i184(bctrain) with 'others'.
    endcase.
    unlocking the table...............
    call function 'DEQUEUE_E_TABLE'
    exporting
    MODE_RSTABLE = 'E'
    tabname = 'MARA'
    varkey = varkey
    X_TABNAME = ' '
    X_VARKEY = ' '
    _SCOPE = '3'
    _SYNCHRON = ' '
    _COLLECT
    <REMOVED BY MODERATOR>
    preet
    Edited by: Alvaro Tejada Galindo on Jun 12, 2008 6:21 AM

  • What is Lock box?

    HI
    Dear friends
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    Thank you.
    Ashok kumar
    Email: [email protected]

    Following activities, you store the specifications for the lockbox procedure. This procedure is used to process incoming payment  transactions (normally checks) in the USA. The Lockbox program will  process a file of payment transactions from the bank, create general  ledger posting for cash received and clear Accounts Receivable open items.                                                                    
    Waiting for Points
    Regards
    Abhi

  • WHAT IS LOCK SYMBOL NEXT TO BATTERY SYMBOL. LOCK HAS A CIRCULAR ARROW AROUND IT

    can not seem to find out what the lock symbol with circle around it next to battery symbol is ...... any one know what it is and how to turn it off ?
    never mind .... found the answer in another discussion post.. its a setting for locking out the rotation feature. problem solved.
    this support community rocks !!!!

    This is covered in the manual:
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  • How to find out what user locked account

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  • What does "Locked" status really mean in FPGA Timekeeper

    The help says, "FPGA Timekeeper locked is TRUE if the FPGA Timekeeper has locked on to and is tracking the given time reference."
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    - Is the Timekeeper checking the interval at which Sync Time.vi is called?
    - Is it comparing the offset of the two time values input to Sync Time.vi  to its internal prediction?
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    - Does calling Time Synce too frequently or too infrequently contribute to not achieving locked status, or to losing it?
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    Hello Matt_Dennie,
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    FPGA Timekeeper 1.1b0 GetStatus.vi:
    http://forums.ni.com/t5/LabVIEW/FPGA-Timekeeper-1-1b0-GetStatus-vi-Locked-indicator-never-goes/td-p/...
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  • HT1526 what are locked items?

    why are they locked? who locked them? should I lock all my files? how to unlock all my files? how do I find each locked item to unlocked them? yes, I'm very angry with some features I find on my mac, every day.

    Generally items that are locked by default should be locked so they are not unintentinally changed To open a locked item, "Get Info" (cmd-i) and click the padlock to open, you'll be asked to enter your admin password and it will unlock.
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  • What does locking a tab do versus protecting a tab?

    Can't find any write-up describing what these two options do.

    I can not replicate the problem with locked tabs, all links I tried opened in a new tab. I am using the latest development version so it may be something that has been fixed. You can try the development version, it is available from http://tmp.garyr.net/forum/viewtopic.php?t=10888
    If you still get the problem with locked tabs, you can report it to the Tab Mix Plus developer - http://tmp.garyr.net/forum/viewforum.php?f=2

  • What is locking

    Be sure to lock your AGP/PCI bus at 66/33
     found this and i been trying to figure what it means but i looked all over the bios and cant seem to find anything and anyone know some timmings for my corsair pc3200 xms like give me a recommendations ..

    pci is locked at 33 on that board
    and agp will only change from 66 if your daft enough to up it in the bios
    fsb ddr ratio 1.1
    11, 3,3 cas 2

  • What is Lock folder doing ?

    I would like to lock a folder so that I can open the folder and the documents inside it but not alter anything
    If you Ctr Click the folder , then press Get Info, you can lock the folder
    But what is it doing ?
    I noticed that I could not add new files to the folder. That is all.
    I do not want to used complicated procedures such as with Disk Utilities

    Bomiboll wrote:
    Yes sir. That's the situation. I can edit it, I can save it, and to the same place.
    It means that this is a flaw in Mac OS.
    No, it just means you don't understan Posix permissions and the Access Control Entries.
    Locking a folder doesn't do anything but Lock the folder. Access to the contents are still controlled by the Posix permissions and the ACEs. Setting a folder to Locked in Get Info sets the uchg flag. That will prevent you from changing the Folder, but not it's contents, which still have the same settings as they had before you Locked the folder. You can override the delete, but you can't rename or move it (which are the same things in unix), or add items into it. If you want to lock all the files inside, you have to select them all and lock them.
    Using the shell,
    chflags -R uchg /Users/username/Documents/My\ Locked\ Folder/
    In unix, a folder is really nothing but a part of the full name of the file. E.g.
    /Users/username/Documents/My\ Locked\ Folder/myFile.txt
    A better way to achieve what you want is to set it to Read Only for User, Group, and Others
    In the Finder, Get Info on the folder and unlock the padlock on the Permissions section.
    Set yourself to read only.
    Set the group(s) and everyone to no more than Read Only.
    Cick the Gear icon and choose Apply to Enclosed.
    In the shell,
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    The uappend flag is more like what you want. It allows adding to the folder, but not editing the contents.
    So, you could lock the folder and set it to not let you change the contents at all with:
    chflags uchg,uappend /Users/username/Documents/My\ Locked\ Folder/
    However, some programs will allow you to authenticate to make changes to the files, even with those settings.
    Then there's Access Control Lists which further add to the complexity. This help page for Tinker Tool System is a brief introduction. If you search for OS X ACL you will find lots of articles on how to set them.

  • What is lock/unlock

    Hi,
    Anybody can tell us what lock/unlock menus do when I click the right button towards
    a file
    in the WLW? I could not find them from the WLW help at all
    Thanks
    Qiu

    Hi,
    Implicit version control is not supported in the current release, but it will be supported in Release 11 (upcoming release).
    In 10.1.3.4 the model gets locked while editing (user A). If user B wants to open the same model he can have only read access to it. Therefore different versions of processes have to be maintained in an external source control system (for now). In this context it might be helpful for you to investigate the XML-Import/Export functionality combined with an external CVS.
    Additionally, models and databases can be manually released and versioned in ARIS using the appropriate attributes (as per project conventions). Please have a look to my post at Re: Control Version and see if it helps to get some ideas for your requirements.
    Best regards,
    Danilo.

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