How to lock tcode and what is like tcode

how to lock tcode and what is like tcode

Hi,
The AREA MENU that you define in SE43 are like t-codes
Example of area menu is WEDI - Edi related config..
Thanks
Naren

Similar Messages

  • How to find Latch and what actions need to be taken when there is a latch

    Hi
    Can you please tell me how to find Latch and what actions need to be taken when there is a latch?
    Thanks
    Regards,
    RJ.

    1. What is a latch?
    Latches are low level serialization mechanisms used to protect shared
    data structures in the SGA. The implementation of latches is operating
    system dependent, particularly in regard to whether a process will wait
    for a latch and for how long.
    A latch is a type of a lock that can be very quickly acquired and freed.
    Latches are typically used to prevent more than one process from
    executing the same piece of code at a given time. Associated with each
    latch is a cleanup procedure that will be called if a process dies while
    holding the latch. Latches have an associated level that is used to
    prevent deadlocks. Once a process acquires a latch at a certain level it
    cannot subsequently acquire a latch at a level that is equal to or less
    than that level (unless it acquires it nowait).
    2. Latches vs Enqueues
    Enqueues are another type of locking mechanism used in Oracle.
    An enqueue is a more sophisticated mechanism which permits several concurrent
    processes to have varying degree of sharing of "known" resources. Any object
    which can be concurrently used, can be protected with enqueues. A good example
    is of locks on tables. We allow varying levels of sharing on tables e.g.
    two processes can lock a table in share mode or in share update mode etc.
    One difference is that the enqueue is obtained using an OS specific
    locking mechanism. An enqueue allows the user to store a value in the lock,
    i.e the mode in which we are requesting it. The OS lock manager keeps track
    of the resources locked. If a process cannot be granted the lock because it
    is incompatible with the mode requested and the lock is requested with wait,
    the OS puts the requesting process on a wait queue which is serviced in FIFO.
    Another difference between latches and enqueues is that
    in latches there is no ordered queue of waiters like in enqueues. Latch
    waiters may either use timers to wakeup and retry or spin (only in
    multiprocessors). Since all waiters are concurrently retrying (depending on
    the scheduler), anyone might get the latch and conceivably the first one to
    try might be the last one to get.
    3. When do we need to obtain a latch?
    A process acquires a latch when working with a structure in the SGA
    (System Global Area). It continues to hold the latch for the period
    of time it works with the structure. The latch is dropped when the
    process is finished with the structure. Each latch protects a different
    set of data, identified by the name of the latch.
    Oracle uses atomic instructions like "test and set" for operating on latches.
    Processes waiting to execute a part of code for which a latch has
    already been obtained by some other process will wait until the
    latch is released. Examples are redo allocation latches, copy
    latches, archive control latch etc. The basic idea is to block concurrent
    access to shared data structures. Since the instructions to
    set and free latches are atomic, the OS guarantees that only one process gets
    it. Since it is only one instruction, it is quite fast. Latches are held
    for short periods of time and provide a mechanism for cleanup in case
    a holder dies abnormally while holding it. This cleaning is done using
    the services of PMON.
    4. Latches request modes?
    Latches request can be made in two modes: "willing-to-wait" or "no wait". Normally,
    latches will be requested in "willing-to-wait" mode. A request in "willing-to-wait" mode
    will loop, wait, and request again until the latch is obtained. In "no wait" mode the process
    request the latch. If one is not available, instead of waiting, another one is requested. Only
    when all fail does the server process have to wait.
    Examples of "willing-to-wait" latches are: shared pool and library cache latches
    A example of "no wait" latches is the redo copy latch.
    5. What causes latch contention?
    If a required latch is busy, the process requesting it spins, tries again
    and if still not available, spins again. The loop is repeated up to a maximum
    number of times determined by the initialization parameter SPINCOUNT.
    If after this entire loop, the latch is still not available, the process must yield
    the CPU and go to sleep. Initially is sleeps for one centisecond. This time is
    doubled in every subsequent sleep.
    This causes a slowdown to occur and results in additional CPU usage,
    until a latch is available. The CPU usage is a consequence of the
    "spinning" of the process. "Spinning" means that the process continues to
    look for the availability of the latch after certain intervals of time,
    during which it sleeps.
    6. How to identify contention for internal latches?
    Relevant data dictionary views to query
    V$LATCH
    V$LATCHHOLDER
    V$LATCHNAME
    Each row in the V$LATCH table contains statistics for a different type
    of latch. The columns of the table reflect activity for different types
    of latch requests. The distinction between these types of requests is
    whether the requesting process continues to request a latch if it
    is unavailable:
    willing-to-wait If the latch requested with a willing-to-wait
    request is not available, the requesting process
    waits a short time and requests the latch again.
    The process continues waiting and requesting until
    the latch is available.
    no wait If the latch requested with an immediate request is
    not available, the requesting process does not
    wait, but continues processing.
    V$LATCHNAME key information:
    GETS Number of successful willing-to-wait requests for
    a latch.
    MISSES Number of times an initial willing-to-wait request
    was unsuccessful.
    SLEEPS Number of times a process waited a requested a latch
    after an initial wiling-to-wait request.
    IMMEDIATE_GETS Number of successful immediate requests for each latch.
    IMMEDIATE_MISSES Number of unsuccessful immediate requests for each latch.
    Calculating latch hit ratio
    To get the Hit ratio for latches apply the following formula:
    "willing-to-wait" Hit Ratio=(GETS-MISSES)/GETS
    "no wait" Hit Ratio=(IMMEDIATE_GETS-IMMEDIATE_MISSES)/IMMEDIATE_GETS
    This number should be close to 1. If not, tune according to the latch name
    7. Useful SQL scripts to get latch information
    ** Display System-wide latch statistics.
    column name format A32 truncate heading "LATCH NAME"
    column pid heading "HOLDER PID"
    select c.name,a.addr,a.gets,a.misses,a.sleeps,
    a.immediate_gets,a.immediate_misses,b.pid
    from v$latch a, v$latchholder b, v$latchname c
    where a.addr = b.laddr(+)
    and a.latch# = c.latch#
    order by a.latch#;
    ** Given a latch address, find out the latch name.
    column name format a64 heading 'Name'
    select a.name from v$latchname a, v$latch b
    where b.addr = '&addr'
    and b.latch#=a.latch#;
    ** Display latch statistics by latch name.
    column name format a32 heading 'LATCH NAME'
    column pid heading 'HOLDER PID'
    select c.name,a.addr,a.gets,a.misses,a.sleeps,
    a.immediate_gets,a.immediate_misses,b.pid
    from v$latch a, v$latchholder b, v$latchname c
    where a.addr = b.laddr(+) and a.latch# = c.latch#
    and c.name like '&latch_name%' order by a.latch#;
    8. List of all the latches
    Oracle versions might differ in the latch# assigned to the existing latches.
    The following query will help you to identify all latches and the number assigned.
    column name format a40 heading 'LATCH NAME'
    select latch#, name from v$latchname;

  • My iPhone was stolen and I have contacted the police who are using the meid number to locate.  How does this work and what are my chances of getting the phone back?

    My iPhone was stolen.  I used Find My iPhone app to lock it and display a message.  The phone has not connected to the internet to locate it.  I contacted the police and they have taken my meid number.  How does this work and what are my chances of getting the phone back?  Are there other ways the theif can use it.  I was told once they put in a new sim card and use it, whatever software the police have, it will show up.

    Honestly? In the US (I can't speak to other countries, though I doubt it works much differently in a lot of the world) The police took your report and filed it either in their computers or, on paper. They will now not think of this again. The only time it will cross anyones mind is if, in the course of entering information into evidence about items recovered or seized at a crime scene, the serial number of an iPhone that was found/seized happens to match yours, in which case you will be contacted.
    The police in the US can and will do nothing to 'blok' the phone and it's not worth their time to try and locate it unless you know for a fact that it was stolen by a big time drug lord, master criminal, or some other such prime target and they can get a court order to track the location of the phone in order to locate this individual for your own purposes.  If they do that, they'll probably keep him under surveilance for a year or so before they act.
    Basically, the police don't care about your phone. If they find it, they will give it back to you. They are not, however, going to go looking for it. They have better things to do.
    I'm sorry, but that's the way it is.

  • Some pictures in I-Photo seem to be corrupted. When I click on them, the photo comes up for a second, then the picture turns black with a white fuzzy circle inside it and what looks like an explanation mark. Some older, some newer,  no common thread.

    Some pictures in I-Photo seem to be corrupted. When I click on them, they come up for a second, then turn black with a white circle in the middle and what looks like an explanation mark. There does not seem to be any rhyme or reason to the photos that are a problem, some older ones, some newer, some albums have none, some albums have a lot.
    Thanks,
    Mark

    time to time (when I have a chance), I will go to Finder, bring up ALL Images and start going through them to label them (before I put a label on them, they are simply listed as 123 jpg, 124 jpg etc.).
    You're damaging the Library doing that, and that's the cause of your problem.
    Never, ever, ever use the  All Images search and work on items in yoyr iPhoto Library. They must only be accessed via the iPhoto window.
    Restroe from abck up or try rebuild the Library:
    Download iPhoto Library Manager and use its rebuild function. (In early versions of Library Manager it's the File -> Rebuild command. In later versions it's under the Library menu.)
    This will create an entirely new library. It will then copy (or try to) your photos and all the associated metadata and versions to this new Library, and arrange it as close as it can to what you had in the damaged Library. It does this based on information it finds in the iPhoto sharing mechanism - but that means that things not shared won't be there, so no slideshows, books or calendars, for instance - but it should get all your events, albums and keywords, faces and places back.
    Because this process creates an entirely new library and leaves your old one untouched, it is non-destructive, and if you're not happy with the results you can simply return to your old one.
    Next: You need to learn how to use iPhoto. There's no need to be dragging things to the desktop:
    For help accessing your photos in iPhoto see this user tip:
    https://discussions.apple.com/docs/DOC-4491

  • How To Handle Tickets and What are those

    Hi Everybody,
    Can anybody tell me, How to handle tickets and what are those.
    srinivas

    Hi,
    Tickets are basically assocaited with Production support type of work.
    Tickets are nothing but the medium through which problems reported either in the system or by users to the Production support team.
    There are certain problem management tools that every organization uses (tickets are created and worked on using those tools). There are tools like Vantive, Remedy, CASE, etc.
    Usually the helpdesk gets the first contact for any user problems and then they log a ticket with the appropriate support teams. The support teams then pick up those tickets and work on them till they are resolved. There are tickets created for user problems or any batch job failures, system failures, etc.
    Tickets are usually classified as Critical, High or Low and again they are categorized as High Severity, Medium Severity or Low Severity. All these types of tickets have SLAs (Service level agreements) for the Support teams to respond and the resolve the tickets in.
    Look at the threads below for similar posts :
    tickets
    Tickets
    tickets
    Cheers,
    Kedar

  • How do I sort and rearrange photos like power point charts?

    I am trying to create a slideshow in iphoto.  I am in faces view. How do I sort and rearrange photos like power point charts?

    You are asking how to use Aperture, unfortunately a question that is a bit overly broad. Aperture will certainly allow you to do exactly what you ask, but I suggest buying a book/CD/tutorial and working all the lessons to learn the process.
    What you want is a tutorial, not a manual. One acceptable tutorial is:
    Apple Pro Training Series: Aperture 3  by Dion Scoppettuolo (Apr 23, 2010)       
    One mandatory thing to do that many tutorials fail to note is:
    Back up original image files on and off site before using Aperature or any other images management application.
    HTH
    -Allen

  • HT201210 i updated my 4s yesterday, but my phone will not work at all now, and will not turn off. It has a itunes image on the screen with an arrow undernieth and what looks like the charger lead. i've had it on charge! is there anything else i can do?

    i updated my 4s yesterday, but my phone will not work at all now, and will not turn off. It has a itunes image on the screen with an arrow underneath and what looks like the charger lead. i've had it on charge! is there anything else i can do?

    Cconnect it to your computer with the latest version of iTunes installed.

  • I have question about hooking up an external hdd to a time capsule and still have my printer hooked up as well. Anyone got any tips for me, how to do it and what brand of harddrive that will work best for me 1 or 2 TB

    i have question about hooking up an external hdd to a time capsule and still have my printer hooked up as well. Anyone got any tips for me, how to do it and what brand of harddrive that will work best for me 1 or 2 TB

    You just need a powered hub.. if you already use one then fine.
    Plug in just about any external hard disk will work fine. Format has to be readable by the TC.. ie fat32.. or much better HFS+.. plug it into a Mac to prepare the drive.
    Pick whatever size suits.. nowadays 2TB are most economical.
    WD, Seagate have goobled up all the minor players.. so pick one.
    Whatever suits your budget and asthetics.
    NOTE.. The USB on the TC is fine for printers.. IMHO it is the wrong way to go with USB disks.. use the internal disk of the TC.. USB is less than half the native speed plugged into a Mac.. TC to USB is slow.. far slower than internal drive.. or using external drive as external.

  • How do I find out how to use cloud and what does it exactly do?

    I Am new to Apple and just not sure how this iCloud works and what does it do.

    Read here:
    http://www.apple.com/icloud/
    Basically it is a storage area on apple's servers that lets you keep a backup of your device to restore from in case you need to.
    It also has additional features for your media content and other services.

  • Many songs in my library appear to be duplicates. How did thta happen and what do I do?

    Many songs in my library appear to be duplicates. How did that happen and what do I do?

    henryfromcolonial beach wrote:
    A recent download - which I automatically said OK to, has somehow made every image in my library into low res.  when I try to use one as a screen saver, it is low res - when I try to print one, it is low res.  was this some kind of setup to get me to buy a newer version of iphoto??????
    Of course not - in fact it is not something done by iPhoto - it is most likely a user error
    What exactly did you do? What did you download? there is nothing in iPhoto that ever changes the resolution of any photo - in fact you can not do it if you want in iPhoto - you have to export photos to a location outside of iPhoto to change the resolution
    have you loaded your backup from before you did what ever you did? That is probably the fastest and easiest way to resolve the problem
    LN

  • I have imported a csv from my mortgage repayments, my father and I pay seperate amounts. I am trying to show how much I have paid vs what he has paid, how much is owed and what % we own.. We are 50/50 on the property

    I have imported a csv from my mortgage repayments, my father and I pay seperate amounts. I am trying to show how much I have paid vs what he has paid, how much is owed and what % we own.. We are 50/50 on the property.. Help?

    Hi Spears,
    I not sure what your actual question is.
    Does the CSV file include only your payments? Your payments and your dad's payments as separate items?
    Do you want to com[are ongoing payments, or do you want to compare the current totals paid by each? Is the 'we' in "what we own" collective, or individual? DItto for "how much is owed."
    Too many loose ends to tie down a clear answer.
    Regards,
    Barry

  • I have an battery issue i bought my iphone 4 from U.k. and right now i want replace my batter in India how can i do and  what's i have to pay for this

    I have an battery issue i bought my iphone 4 from U.k. and right now i want replace my batter in India how can i do and  what's i have to pay for this.
    Is there any one listening me why apple boys selling this stupid thing which have so poor battery life which gone dead after 3 monts of battrey use.

    http://support.apple.com.au/wts/in/
    This link gives you the service options for India
    They  MAY repair it
    They  WILL charge you
    How much ,no idea

  • How to find when and what date my iphone was first switched on from a retailer

    how to find when and what date my iphone was first switched on from a retailer

    Depending on the Code version you are running you can look for this output . It will show when a SFP was removed and inserted.
    module-2# show port-config internal all  (This command wil differ of earlier versions of SAN OS )
    Mar 20 08:53:45 2011  00449361  fc2/20         ---   DOWN   Xcvr inserted          
    Mar 20 08:53:32 2011  00829429  fc2/20         ---   DOWN   Disable                
    Mar 20 08:53:32 2011  00826403  fc2/20         ---   DOWN   Disable                
    Mar 20 08:53:32 2011  00818936  fc2/20         ---   DOWN   Xcvr removed  

  • Can any guide me how to gather requirements and what r the approaches!

    HI
    Can any guide me how to gather requirements and what r the approaches and documents.
    Regards
    VSM

    Modeling approach:
    Top down - Try and find out what kind of reports the users need. Based o that you can determine your granularity of data.
    Have to find out what the sources are. Then decide if you have standard content or if you need to enhance or develop new objects.
    Try and see if standard reports are enough.
    If they ned aggregated data, decide on cubes. Then decide what all business areas the reports encompass. Based on that u can decide to build multiproviders or infosets depending on requirement.
    try to incorporate all the keyfigures  and characteristics in your data model.
    then decide how many layer ODS's you might need.
    then come up with a data model accordingly.

  • Hello! How can i setup and what to enable that my secretary has my shared calendar on her Iphone and that she can edit it? We are on Exchange 2010, Outlook 2010, Iphone 4s. Can it be done through some app? Thank you!

    Hello! How can i setup and what to enable that my secretary has my shared calendar on her Iphone and that she can edit it? We are on Exchange 2010, Outlook 2010, Iphone 4s. Can it be done through some app? Thank you! I'm trying to avoid creating my exchange activesync account on her Iphone and then sync only my calendar.

    Thank you for your time. I'm trying to avoid that because she can then simply turn on mail syncronization and then she could read my mail. Another reason is our password policy, that enforces changing our windows logon password every 90 days. Of course changing windows logon passwords demands changing exchange account logon info (password) on Iphone. I have read somwhere that there was an app but it was removed from app store. Any other suggestions would be appreciated.

Maybe you are looking for