Working of LMT datafile and ASSM bitmaps + data-dictionary

Hi,
I was looking to have some clarification on effective changes that take place within the database during a datafile addition/resize in a LMT. Hence what are the scenarios where a datafile resize would be better than a datafile addition and vice-versa?
I have not been able to find clear guidelines to the above.

From the perspective of bitmap in datafile header is it not true that multiple datafiles with separate bitmaps in their headers can reduce the contention for multiple hot blocks in a single datafile?
To phrase my question differently, when does the additional calculations for LMT,ASSM and data-dictionary maintainance rule in favor of resizing a single datafile(ending in a sort of big file tablespace) rather than adding datafiles?

Similar Messages

  • Differrences between structure and table in data dictionary in ABAP?

    What is the differrences between structure and table in data dictionary in ABAP?
    are they same?

    Tables :
    1. The place where the data is stored so that you can retrieve at any time.
    2. There can be more than one record stored
    Structures :
    1. The data / info stays only during the runtime of the application and will not get stored at all during the run time ....
    2. Only one record can be stored at the runtime .....
    A structure forms the skeleton of the table.
    A structure comprises components i.e., fields. Types are defined for the components A component can refer to an elementary type (via a data element or by directly specifying the data type and length in the structure definition), another structure or a table type. A structure can therefore be nested to any depth
    Tables can be defined independently of the database in the ABAP Dictionary. The fields of the table are defined with their (database-independent) data types and lengths.
    When the table is activated, a physical table definition is created in the database for the table definition stored in the ABAP Dictionary. The table definition is translated from the ABAP Dictionary to a definition of the particular database.

  • How to find function and SP from data dictionary?

    For example:
    create or replace package SPK_A is
    lv_empno number;
    lv_deptno number;
    function FUN_A(in_empno number) return varchar2;
    function SP_A(in_deptno number) return varchar2;
    end;
    Then, how can i to find FUN_A and SP_A from data dictionary.
    and mark the former is a function, the latter is a stored procedure.
    I have tried to use the following 2 views, but i cannot give me the answer.
    (1)dba_procedures: it can only find the sole function or sole stored procedure, which is not define in a package.
    and it can not distinguish between function and SP.
    For example, it can only find the function or SP as below:
    create or replace function FUN_OUT return number is
    begin
    null;
    end;
    (2)all_arguments: it can list all function or SP which has varibles, but can not distinguish between function and SP.
    Can anyone help me?
    Any ideas appreciated.
    Merry Chirstmas!

    Is this what you mean?
    SQL> connect test/test
    Connected.
    SQL> create or replace package SPK_A is
      2  lv_empno number;
      3  lv_deptno number;
      4  function FUN_A(in_empno number) return varchar2;
      5  function SP_A(in_deptno number) return varchar2;
      6  end;
      7  /
    Package created.
    SQL> create or replace function FUN_OUT return number is
      2  begin
      3  null;
      4  end;
      5  /
    Function created.
    SQL> select object_type, object_name from user_objects;
    OBJECT_TYPE
    OBJECT_NAME
    TABLE
    ABC
    PACKAGE
    SPK_A
    FUNCTION
    FUN_OUT

  • I NEED HELP My cellular data is not working! I called and went to Apple INC. And At

    So after July 4th 2013 I experienced wi-fi problems. I wasn't able to keep connected and i kept getting kicked out my own wi-fi. I left it continue a while because i thought it was only temporary. But i noticed my cellular data with at&t hadn't been working properly for about a month. Then it started getting worse till the point now I cannot use nor wi-fi nor cellular data. I called Apple Inc., they thought it was a bug, and we took procedures for trying to fix it. We restarted it, and reset network settings. Finally they suggested calling or going into at&t. I called first and we did almost same exact procedures as apple. So I decided going into At&t, they changed my original sim card and was only recieving 1 bar of signal, but i was bad. I couldn't do anything. After they scheduled and appointment at Apple store, ugh! which was such bad service. People everywhere and rushed through my problem and he didn't even let me explain. He only suggested I buy their ipad exchaging mine. In which come on. I couldn't back up my photos and stuff that instant. I asked him to give me a minute and he never came back. Like what was the point of that appointmet? After leaving I walked about 2 streets down and all my cellular data bars and 3g were up. It only worked there and when i was driving home and got home nothing once again. Not even inside the store. i mean others wi-fi works in some areas and my cellular data was good until now . I know At&t told me they were not experiencing any technical issues and everything was good, so i know its not due to that. My siste's mini ipad is working fine, so is my sisters ipod. I really need help and someone to take time in reading this and or helping me.Please thanks!

    Has any had you try a reset yet? Sometimes the WiFi & Cellular anntennas get wacky.
    Hold Sleep/Wak & Home buttons until the screen goes dark and you see the Apple logo

  • Why the query of the object still can work after the datafile has been deleted?

    Dear friends:
    Recently, I deleted a datafile from OS but don't touch the correspondent tablespace in OEM(actually the datafile name still exists in OEM after I deleted it from OS). I found out I still can create objects such as table and query it in this tablespace using sqlplus though the physical datafile has already been deleted.(What I done is I created new objects using an account whose default tablespace is that one which I deleted the datafile from it.). Will these new objects use another datafile instead the original one deleted? I will appriciate if you can point out the reason for me. Thanks for your help!
    John
    07/26/2002

    Even though you delete a datafile physically from OS, entries about the datafile still exists in Data Dictionary. So long as these entries are there in data dictionary, Oracle will consider that these file exists unless there is a specific command which referes to deleted files.
    Further, you are trying to create table in a tablespace whose datafile is deleted. If that was the only datafile for that tablespace then you should get an error. If the table is getting created, there must be some other datafile for that tablespace, in which your table is getting created. This is all when your database is already in running stage. If you shutdown and restart the database, it won't start next time because of missing datafile.
    Hope this solves your query.

  • Oracle indexes that are missing in the SAP Data Dictionary

    We have an old SAP SAP system we just shut down, but Oracle is still up.
    I am trying to put together a query using DBA_INDEXES and a SAP Data dictionary table, that will show me what tables are in Oracle and not in the SAP data dictionary.
    I cannot bring up SAP, but database is still up.

    Hi Bill,
    Table DD12L contains the definition of the SECONDARY indexes.
    Watch it, indexes may be concatenated to table with ^ or ~ or severel
    _ chars so an index 3 for a table might be named
    table~3
    table^3
    table_____3
    depending on what upgrade History the system has.
    For primary indexes, you should ensure, that every table has an index
    with suffix 0 as in
    table~0
    table^0
    table_____0
    Hope this helps
    Volker

  • Hello I am experiencing some problems for my iMessage and FaceTime. I did the steps the Apple provided online and I still can't get it to work. My updates are up to date. Everything is working fine it's just that the Apple iMessage won't except anyth

    hello I'm experiencing some problems with my iMessage and face time. I did with Apple provided me online. I did the steps. Nothing will work, it keeps saying activation turn on Wi-Fi when my Wi-Fi is turned on. As soon as I got this on Christmas. iMessage and FaceTime have not been working. My Apple and ID password are correct. Everything else is working fine. My iOS updates are up to date, everything is fine except FaceTime and iMessage

    Did you try everything here?
    iOS: Troubleshooting Messages
    Using FaceTime and iMessage behind a firewall
    iOS: Troubleshooting FaceTime and iMessage activation
    FaceTime, Game Center, Messages: Troubleshooting sign in issues
    In the future saying your tried the Apple on-line articles does provide us with information as to which ones you found and tried

  • Working with multiple users and computers, but shared data

    Sorry if this is posted in a poor place, I'm not sure where the best place is. This is sort of a general questions.
    For a long time, my wife and I have had either one computer, or two machines but one has definitely been just a terminal. We've basically set up all of our data to be one one primary machine, and if we want to view/edit that data we have to use that machine.
    We just got a new MacBook Pro and I would like to be able to use two machines as equals. Sadly, this idea of multiple computers, with two users and some shared data is really giving me difficulty. I was wondering if anyone has any suggestions on how to best manage things like:
    Synchronizing portions of our contact list (We share about 50% of the combined library -- we don't have to share all though).
    How to manage iPhoto so that we can each have access to the photos. As an added difficulty (or maybe this is easier?) my Wife just wants to have access to the pictures for viewing and sharing on Facebook/Picassa/etc. I am the only one who wants to edit, correct and cull our library. That said, I always edit when I first put the data on the machine, and almost never again; so it would be fine to have one (or both accounts) set up as view only for the iPhoto data.
    How to manage iTunes so that we can each have access to the music. As a super awesome bonus, it would be great if we could have three libraries: His, Hers and Shared. Maybe as much as 30% of our music library is similar, the rest just gets in the way.
    What is the best solution people have found for calendars? (I'm thinking two separate calendars, and we each subscribe to each others iCal feed)
    Mail.app and bookmark synching is not really a problem for us.
    Two extra points:
    * One machine is portable, and the other isn't. Ideally, when the laptop is out of the house, both machines should still have reasonable access to the shared data. That is: Just dumping things in the shared folder won't work because when the laptop is out of the house we will be disconnected from the source data.
    * We just got a second iPhone. This means that both of us will be taking photos/video separately and trying to synch back to the master data store.
    * Basically, I'm trying to minimize data duplication as much as possible, and just synchronize the systems to each other.
    Thanks a ton in advance. If anyone has any suggestions at all, I would love to hear them. Including "This is in the wrong forum, go ask here instead..."

    So you have a desktop Mac and a laptop Mac, right? Two user accounts (and a third admin account) on each computer, right?
    I profess that I haven't tried this, but here is how I would approach your problem:
    Sharing Music and Photos between multiple user accounts on the same computer: 
    See if http://forums.macrumors.com/showthread.php?t=194992 and http://forums.macrumors.com/showthread.php?t=510993 provide any useful information to assist you in this endeavor.
    Sharing across multiple computers:
    Turn on file sharing on the Desktop (System Preferences > Sharing). Now you can mount the Desktop as an external drive on the laptop's Desktop. Copy the music and photo folders across. Will take awhile to do the first time. Then, for future use, get a copy of the donationware CarbonCopyCloner or equivalent. You can use CCC to selectively sync specific folders from one computer to the other. There may be a hassle with digital copyright issues on music and movies, though.
    Calendars:
    As you have suggested yourself, publishing yours and subscribing to hers is probably the best way to do it, on the same computer. Across computers, syncing with CCC or equivalent would probably be the way to go.

  • TS2756 hotspot is not working on myiPad 3, hotspot tap is cellural data always appear that it is searching, and never stop. Vodafone and tradeline told me that there is no problem with carrier and Sw. Tethering data is never kept.

    Hotspot appear always to search and never stop
    internet is not working without internet APN data
    Tethering APN  never save the data
    Vodafone carrier checked and mentioned that the no problem with the SIM
    Tradeline checked and the IOS was latest 6.1, but asked to reinstall from scratch
    Please advice

    I have this _same_ issue, exactly.  Initial backup goes just fine, but incremental backups fail.  And like you, I replaced the internal drive.
    The failures didn't start occuring long after the original drive was replaced--which was about 1 year ago.  The new drive was non-Apple and worked fine--and tests fine now as well when outside the TC.  But suddenly incremental backups started failing when the TC firmware and utility app were updated about 2-3 months ago.  I even swapped the internal non-Apple drive for another known-working non-Apple drive, and same results.
    I strongly suspect Apple added something to the firmware to check if it's an Apple or non-Apple drive in the TC and, if the latter, maybe causes incremental backups to fail.  This is only speculation and, obviously, the initial backup still works, so any checksum like this would have to be only during the incremental backup process.
    I'll be checking into this thred to see if others have the same issue, or if a solution is found.  Hopefully my hypothesis is just para-apple-noia and it's some small, easy-to-fix issue.
    -Gizm0d0

  • My iPhone 4S will not connect to the internet properly. It says that it is connected, the App Store won't load apps and I can't get on my face book app. I have tried wifi and my cellular data, neither work. What are some ways to fix this?

    My iPhone will
    not connect to the internet properly. It says that it is connected, the App Store won't load apps and I can't get on my face book app. I have tried wifi and my cellular data, neither work. What are some ways to fix this?

    Try resetting your network settings.
    Settings>Genenal>Reset>Reset Network Settings.

  • TS3999 How do I get my Macbook Pro and iphone 5 to sync calendars in 2014? It worked fine in 2013, but the 2014 dates are blank on my Macbook.

    How do I get my Macbook Pro and iphone 5 to sync calendars in 2014? It worked fine in 2013, but the 2014 dates are blank on my Macbook. The all icloud is checked on my phone and the enable icloud account and push are selected on the Macbook.
    Thanks

    Do the events from your iPhone calendar appear on icloud.com?  If not, go to Settings>Mail,Contacts,Calendars>Default Calendar (in the Calendars section) and make sure you have selected an iCloud calendar as your default.  If you haven't, make this change, then add a new event on your iPhone calendar and see if appears on icloud.com and your Mac now.

  • My iMessage for my Macbook Air is not working. It says no delivered with a red ! next to it. I have tried serval different options on trying to get it to work to include logging out of iCloud and checking my date and time. I have done about everythin

    My iMessage for my Macbook Air is not working. I have updated everything. My system is running on OS X Yosemite Version 10.10. When I go to send a message, it says no delivered with a next to it. I have tried serval different options on trying to get it to work to include logging out of iCloud and checking my date and time and updating FlashPlayer. I have done about everything I can think of. Any help would be greatly appreciate!

    Why start a new and very similar thread to your other one which you have not responded to (have you read the replies?)
    I suggest that no response is made to this duplicate thread. 

  • My old computer (a Sony) with my iTunes crashed. I have a new MAC and want to make sure I can keep all of my music (mostly from old CD's that have been lost). I bought iTunes match hoping that would work but it isn't using the data on my phone. HELP!

    My old computer (a Sony) with my iTunes crashed. I have a new MAC and want to make sure I can keep all of my music (mostly from old CD's that have been lost). I bought iTunes match hoping that would work but it isn't using the data on my phone. HELP!

    Since you have purchased a new Mac (which, BTW, is not typed in all capitals) why not buy a Time Capsule <http://www.apple.com/airport-time-capsule/> which is designed specifically to work with OS X and Time Machine?
    You don't say what part of your Sony "crashed." If it was not the HDD it is possible to take the computer apart, put the HDD in an external case, then recover the data off of it (including the music) simply drag-n-drop. If it was the HDD that "crashed" that makes it more difficult.
    If you are able to recover the music from the Sony you can then add it to the iTunes library on the Mac and iTunes Match will then scan, match and upload the tracks to be mirrored in the cloud.

  • I updated my LG G3 this week and now it SUCKS!  When I'm connected to WIFI, nothing on Facebook works.  The photos and videos won't populate.  I have to turn off the WIFI and only use the mobile data. Not to mention, I really hate the way it looks now.

    I updated my LG G3 this week and now it SUCKS!  When I'm connected to WIFI, nothing on Facebook works.  The photos and videos won't populate.  I have to turn off the WIFI and only use the mobile data. Not to mention, I really hate the way it looks now.   Before I updated my phone, I really liked it, now I don't like my phone at all!  When will this be fixed? I hope it's soon.  I'm thinking of changing providers now.

    Does the iOS device connect to other networks? If yes that tend to indicate a problem with your network.
    Does the iOS device see the network?
    Any error messages?
    Do other devices now connect?
    Did the iOS device connect before?
    Try the following to rule out a software problem:                
    - Reset the iOS device. Nothing will be lost
    Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
    least ten seconds, until the Apple logo appears.
    - Power off and then back on your router
    .- Reset network settings: Settings>General>Reset>Reset Network Settings
    - iOS: Troubleshooting Wi-Fi networks and connections
    - Wi-Fi: Unable to connect to an 802.11n Wi-Fi network      
    - iOS: Recommended settings for Wi-Fi routers and access points
    - Restore from backup. See:
    iOS: How to back up
    - Restore to factory settings/new iOS device.
    If still problem and it does not connect to any networks make an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.
    Apple Retail Store - Genius Bar

  • When insert my lexar USB flash drive I get the message that the disk was not readable by this computer.  It has worked previous to this and I do not want to lose the data by reformatting the drive.  How can I reformat this drive and not lose my data?

    When insert my lexar USB flash drive I get the message that the disk was not readable by this computer.  It has worked previous to this and I do not want to lose the data by reformatting the drive.  How can I reformat this drive and not lose my data?

    You can't reformat it and not wipe everything on it.
    Have you tried a different USB port?
    Only other option, back it up on a different computer.

Maybe you are looking for