uncommit change and redo the recording?

SQL> update t set a = 1 where b = 2;        ----> must have redo record
2 rows updated.

SQL> rollback;
check again above that modified uncommit must be written redo buffer in the restore log file by progression online.

Question:
Why Oracle write the redo record that uncommit replaced by the redo log file online? When it is used?

Thanks in advance.

Maybe it will become clear if you consider that Oracle, in the true sense of the term, does not rollback. Yes, there is a ROLLBACK command - but what it does is to build another series of DML commands that reverse the effect of the first series of DML commands. Then he committed all of the statements in a single transaction.
Thus, all agents of change are necessary for recovery.
--
John Watson
Oracle Certified Master s/n
http://skillbuilders.com

Tags: Database

Similar Questions

  • Add, change and delete the file "iTunes" on a NAS

    I have just said "Apple Support Community" by Apple Support.

    The title probably sums up what I'm trying to do. I'm looking for a way to add, change, and delete files on a NAS.

    Hardware: MacBook Pro 15, 1 TB of storage, 16 GB memory, OSX El Capitan.

    NAS: Qnap TS - 453 has: storage nominally 16 TB, up to about 5 TB.  4 WD 4TB disks in a RAID 5 configuration.

    a Vaio WIN10 as well as a smaller MacBook (my wife)

    The purpose of the NAS is to provide a backup system for computers and act a server "iTunes."

    I acquired the NAS after the death of my WD MyBook live in December 2015 after five years of reading backup and "iTunes" to my computer and the Sonos system.

    After two months of 'getting to know you' with the NAS, I finally managed to configure the server "iTunes" and Mirabile Indo-European it works!  I'm just doing the SIN to a back-up for computers.

    Now for the question: I am looking for an app (for lack of a better term) that will allow me to add and remove files to and from the NAS "iTunes" folder

    My search for a solution so far has indicated that:

    (1) NAS' iTunes folder is not really true Apple iTunes and

    (2) I need something that is DAAP (Digital Audio Access Protocol) friendly, that would allow me to add, change and delete the files.that would allow me to add, edit and delete files.

    I'm not looking for something that would synchronize the files iTunes NAS to one of my computers, I am all prepared to do myself if necessary.

    If I can't find an application so I use the app 'Brute Force' change my Mac iTunes required records and download again to my NAS.

    Why do you need an app to put the files in a folder on the NAS Server?  Make them just above in the Finder.  Maybe I'm missing just your problematic here.  Do you mean add your PEMA files to iTunes? I've never used this file format, but kind of, I would be very surprised if iTunes supported it.

    the NAS iTunes folder is not really true Apple iTunes

    I don't understand what you're trying to say here.  "Apple iTunes" is an application. Yes, a folder is not an application.

    Be warned, we see not few messages from people that use iTunes with a NAS. Often the problems cannot be explained. sometimes just iTunes and NAS disagree togther.

  • The appearance has changed, and even the Start button is no longer a circle but the former rectangle that says start after the installation of an update.

    I recently installed an update of Windows for Vista.  The appearance has changed and even the Start button is no longer a circle but the former rectangle that says start.  How can I get the old look back with on the uninstallation of the update?  Thank you

    Original title: updates

    Hello

    It seems that the update was for graphics, as it changed the appearance

    If the update is the problem, you will need to remove it or download and reinstall the graphics driver from your computer or the manufacturer of the graphical Web site map.

    _________________________________________

    Read this information about updates:

    Microsoft gives sometimes you updates for the 3rd party hardware: graphics, network cards, etc.

    You should only get the latest drivers for them to real hardware manufacturer's website, as Microsoft normally does nor those have the most recent drivers available as Microsoft relies of the 3rd party hardware Manufactuer to provide.

    But unfortunately, the only way to know which is the update of the problem is to install them one by one, until you find the 'wrong' for your installation.

    You can do a system restore to get back until it has been installed (which is NOT the best way to remove an update) or follow this method:

    'Remove an update'

    http://Windows.Microsoft.com/en-us/Windows-Vista/remove-an-update

    When you have found the issue of update of the list of updates which is presented > then right click on the update problem > select Hide update > and it will not be available to you once again

    "How to hide or show an update of Windows Vista"

    http://www.Vistax64.com/tutorials/72491-Windows-Update.html

    "How to hide or restore the updates of Windows hidden in Windows 7 and Windows 8"

    http://www.SevenForums.com/tutorials/24376-Windows-Update-hide-restore-hidden-updates.html

    _____________________________________________

    Here's how to chanage update settings, if you think it is necessary to:

    "Understanding Windows Update and Extras in Windows Vista and Windows 7.

    http://www.bleepingcomputer.com/tutorials/Windows-Vista-updates-and-extras/

    Or the other of these two update settings will give you the chance to see what you want to install through Windows updates;

    Download updates but let me choose whether to install them - if you select this option, Windows will download the updates on your computer, but not install them automatically. If you want to install updates, then you must install them manually. You should only select this option if you have a reason to not install updates automatically. Only advanced users should use this option.

    Check for updates but let me choose whether to download and install them - if you select this option, you'll be alerted when there are new updates available for download and install. You can then choose to download and install the updates that you want. This option should really be reserved for people who know exactly which updates they need, or those who have little access to the Internet.

    But remember you normally only have problems with hardware 3rd party drivers. Other updates are to improve the Performance and security of your system

    See you soon.

  • Open a new window and displays the record using JavaScript information

    I would be very grateful if someone could help with the following query. I produced a simple database using APEX, a page that displays all the records that are currently (in the form of tables). However, due to the amount of information and the resolution of the screen, not all columns are displayed on the resulting web page.

    I would like to change by making the information contained in a hyperlink column, which, once pressed will open a new window containing most (if not all) of the information for the particular record.

    I think that this requires JavaScript and, possibly, SQL, however, I do not know where to start.

    Can anyone provide any assistance will be appreciated.

    If you need additional information, let me know.

    You can start with this:

    http://Apex.Oracle.com/pls/OTN/f?p=31517:23

    Denes Kubicek
    -------------------------------------------------------------------
    http://deneskubicek.blogspot.com/
    http://www.Opal-consulting.de/training
    http://Apex.Oracle.com/pls/OTN/f?p=31517:1
    -------------------------------------------------------------------

  • Tracking changes and errors reserved Records FRM-40501, ORA-00054, FRM-40400

    Forms [32 bit] Version 10.1.2.2.0 (Production)
    Oracle9i Enterprise Edition Release 9.2.0.8.0 - 64 bit Production

    I am working on a form with a large number of triggers after requests and fill in values of selects, etc. I get a message asking me to save the changes when I have nothing changed manually after that just make a mark and cancellation there (f8 to search for a record, f7 to cancel) is it possible I can follow what does oracle think has changed so I can know what is the cause?

    Possibly Associates, when I start my form he begins to spend in query mode, hit f8 questions all records, but when I do, sometimes, im getting an error FRM-40501 saying oracle can only book record to update. (Just checking now, it seems to have disappeared so maybe someone else was open, shared environment) I guess it is also caused by the fact that something is changed in/after the query.

    This 'changed' records are often caused by "cross-validation" of the POST-QUERY-relaxation-actions:

    -After APPLICATION reads the data in data-textitem non-base (list of classic choice)
    -WHEN-VALIDATE-POINT on the database element fires and rereads the FK - ID case and puts it in the article database-> the modified record

    One way to solve this problem:
    put a

    SET_RECORD_PROPERTY(TO_NUMBER(:SYSTEM.TRIGGER_RECORD), :SYSTEM.TRIGGER_BLOCK, STATUS, QUERY_STATUS);
    

    at the end of your POSt-QUERY-trigger

  • How to scan all e-mails and place the record selected in a folder

    I have several thousand E-mail (69 466) in different folders across multiple accounts.
    I'm organizing folders and filters.

    I am looking for a method to analyse a set account, collect all e-mail messages with domain abcdef.com and put it in a selected folder.

    Do a search to find what I want, but I can't select them all and move. The filter mechanism does not appear to cross records/sccounts.

    Any help will be appreciated.

    Mike

    Right click on a folder, search for Messages, and then select the account or folder level (and subfolders), enter the search criteria, such as + contains + abcdef.com, then select the messages that you want to move (Ctrl-A to select all), and then click move and choose the destination folder.

  • Need help from the iphone screen colors 4 change and sometimes the screen turns black

    Hello guys I need your help when I turn on my camera, my phone screen colors change, and sometimes it goes to black screen when I lock / unlock my colors sometimes phone repairs to normal, but when I turn on my camera once again it still happens

    The phone has been maintained in the past?

    To exclude a software problem, set it back to factory settings without using the backup data.

    If the screen works after that, restore your backup to new form.

    Use iTunes to restore your device to factory settings - Support Apple iOS

  • my daughter forgot the password on this laptop, and now nothing can be upgraded. How do I change and reset the password

    computer is without hope, without updates

    If you have forgotten your password, if you have another user who has administrative privileges account you can log in to that account and change the password of your account of origin of the user accounts applet in Control Panel. If you do not have another account like this set upwards or that you do not have the password which you will need to log on to the built-in Administrator account. In XP Home, start the computer in Mode safe. This, by repeatedly pressing the F8 key as the computer starts. This will put you in the right menu. Navigate using your arrow up; the mouse does not work here. Once in safe mode, you will see the normally hidden administrator account. The default password is white.

    In XP Pro, you don't need to go to Safe Mode. In the home screen, do Ctrl-Alt-Del twice to get the classic Windows logon box. Type in "Administrator" and the password that you assigned when you set up Windows.

    If you reset the password of the account administrator integrated into house or have Pro and don't remember the password, use NTpasswd to change the password of the built-in to a white administrator account. Download the bootable CD .iso image file, burn with third-party burning software such as free ImgBurn , Nero or Roxio. Burn as an image, not in the form of data. Start with the media that you have created. You need to maybe change the boot order in the BIOS or obtain a menu of boot command temporary with the pressure of a special key. NTpasswd will run. Follow the instructions carefully.

    http://home.eunet.no/pnordahl/ntpasswd/

    Then, go to the user accounts applet in Control Panel and set passwords that you remember and other changes. WRITE THE PASSWORDS DOWN AND PUT THEM SOMEWHERE YOU WON'T LOSE THEM.
    MS - MVP - Elephant Boy computers - don't panic!

  • Dictionary of automatic correction for the pre Palm CHANGES AND MISSPELLED the words that I TYPE IN CORRECTLY

    A couple of weeks ago, I bought a Palm Pre from Bell Mobility at the Canada.

    It has an automatic correction function corrects usefully commonly spelled words as I type.

    Unfortunately, the dictionary he uses is itself riddled with errors!

    Here are three examples:

    1. If I type the word SURPRISE, he is replaced by SURPRISE.

    2. If I type the word CONNECTION, he is replaced by CONNECTION.

    3. If I type the word CHECK, it is replaced by CHECK. (In Canada, we use check to mean a Bank document and check to mean check.)

    There are also a few corrections that are not useful. For example, if I type the ID (as in identification), it is replaced by I got another: if I type U, it is replaced by you. So if I want to hit U.S., I receive from you. S. I understand that these shortcut replacements are useful for some people, they are not useful to me, and I would like to disable these special entries.

    I used to have a BlackBerry that had a function of automatic insertion. I could change or delete individual entries, add my own shortcuts (this has been extremely helpful - SS became Akrid, my name;) USS has become in the United States; etc.). Is it possible to do it on the Palm Pre, or am I stuck with the dictionary it provides? I love the Pre in other ways, but this thing strikes me slows I will exchange it for a BlackBerry Tour while I can still under my contract, unless there is a clever or clandestine way to change AutoCorrect entries. It's really a deal breaker - one question for me.

    Also, I know you can press BACKSPACE to undo the automatic correction, but by the moment I noticed that it is done, I'm already typing the next word, and at this time I have to go back and erase the whole previous word, enter it again, and then press BACKSPACE, before you type the next word. It really slows me typing it. It's very frustrating.

    Thanks for your suggestions.

    There are a few ways "undocumented" to change the dictionary. They require rooting your phone and it's not something palm would lead the person to do. But there is another hope. http://forums.precentral.NET/homebrew-apps/193362-AutoCorrect-edit-7-28-command-line-access.html is an application of work in progress, a person works to do exactly what you want, add, modify, delete words. I can only hope that once the app catalog beta is open there is a chance to see something like this soon. Or at least, maybe even an option of Palm themselves off.

  • Attempt vSwitch configuration change and now the ESXi host and virtual machines offline

    So I have no doubt, I have myself to blame for this one. I was trying to change my vSwitch from 100 Mbps to 1000 Mbps when an 'operation timed' error out jumps-to the top and my vCenter Server lost connection with my ESXi host. I tried to restart the host manually, but that did not help. The host is not the ping requests and all the virtual machines on that host are offline; None of them vMotion off to my other ESX Server.

    I tried to reconnect the host computer in vCenter, but it is obviously does not connect because it can't ping it. I logged the ESXi console and all the network settings appear to be correct. I'm used to connect to the ESX console where you can execute commands, but it's my first ESXi host, so I don't know what I can do.

    Any help is greatly appreciated!

    -D.

    If you had your management port and VMs on different vSwitches / NIC leave on framework would eliminate a false positive. As in your case the management port reportedly follows the cable / about speed, but the virtual machine network would be intact (and I'm assuming that your storage space as well).  In this case the VMs system would have worked very well even if the management port did not work.

    Dave

    VMware communities user moderator

    Now available - vSphere Quick Start Guide

    You have a system or a PCI with VMDirectPath?  Submit your specifications to Officieux VMDirectPath HCL.

  • How to change and synchronize the capture of three cameras in LR5 time?

    Is it possible to edit and synchronize the capture of three cameras in LR5 time? I edit capture time and I am sorting photos by capture time, but they always display as individual devices.

    Thank you

    Triple-check that you set the year, month, day, and hour just fine.  Given the small fonts and the gray color scheme hard to read, it is not uncommon to miss that you have set the wrong year, for example.   If this still doesn't help, please post a screenshot of high resolution of your view of LR showing the problem. Make sure you have the date/time showing under the library thumbnails (view > View Options).  (You cannot attach the screenshot of an email response - you need to get back on the Web to download).

  • Vista Ultimate x 64 Media Center hang during and after the recording program

    I recently bought a Sony VGC-RT150Y.  More information can be obtained here:

    http://www.SonyStyle.com/webapp/WCS/stores/servlet/ProductDisplay?catalogId=10551&StoreID=10151&langid=-1&ProductID=8198552921665507557

    Highlights of material are:

    NVIDIA® GeForce® 9600M GT GPU

    AVerMedia 313 has (analog TV tuner card)

    AVerMedia A317D (digital TV tuner card)

    The unit works Vistax64, Ultimate Edition.  I installed all the updates that are available through Microsoft Update.  And there is no download with Sony indicating that they could help solve the problem I have.

    The problem is that the computer hangs sporadically after that it registers a program.  After a night of record unattended, the unit is on and does not respond to the keyboard.  The display is blank or frozen.  The computer is connected via a wired network.  I try clicking of the camera and it does not.

    Sometimes programs are saved in their entirety.   Sometimes programs are truncated.

    When I try to get more information via the monitor of performance & reliability, all I get is "stop disruptive."  When I go into the control panel "Report Problems", there is no reported problems.  History of recording program in Media Center lists only one generic error indicating power has been disrupted or the system was not available.  I know that there is no power failure, because I have a NAS connected to an inverter and there is no paper power failure.

    I reported the problem to Sony.  They sent a technician to replace the power supply and the motherboard.  Still no change.

    Defective equipment could only be a TV tuner or the RAM.  All other material was traded through the exchange of motherboard.

    I'm now back to thinking it's a software problem.  Any ideas on how to start this chasing?

    After having poking around on the forums and a little thought, here's what I'll try:

    1. play with the power settings to ensure that the unit never sleeps.  I want to see if the problem is with MCE or power management.

    2. try 'analog' instead of digital recording.  I'm mainly recording clear QAM channels.

    I'd be open to other suggestions that you (all) may have to try to understand this.

    Hi Claude,.
     
    Thank you for writing to Microsoft answers Community Forums.
     
    Re-run the installation of Windows Media Center and check if it crashes while recording. To do this, follow these steps:
     
    1 start Windows Media Center.
    2. click tasks, and then click settings.
    3. click TV, and then click Set Up TV Signal.
    4. When you are notified that changing TV signal settings will interrupt recording, click Yes.
    5. on the Set Up Your TV Signal screen, click Next.
    6. check that the correct area is selected, click Yes, this region to configure TV services and then click Next.
    7. click on configure my TV signal automatically and then click Next.
    8. check that the TV signal configuration settings are correct, click Yes, and then click Next.
    9. click on lists Guide Setup and then click Next twice.
    10. in the privacy of the Guide screen, click Yes, and then click Next.
    11. If you agree to the terms of use of the Guide, click on I agree, and then click Next.
    Note to continue, you must click on I agree to accept the terms of use of the Guide.
    12. click on manual download and then click Next twice.
    13. When you are prompted, type your ZIP Code or the Postal Code, and then click Next.
    14. If you are prompted, verify your signal provider, and then click Next.
    Note After Windows Media Center Download the Guide, the Internet connection is no longer necessary.
    15. follow the remaining steps to complete the installation. You may have to restart Windows Media Center.

    If the problem persists, reply came back with the following details:
    1. Since when are you facing this problem?
    2. is it works much earlier?
    3. have you made changes recently, until this problem occurred?
    4 display error messages that are recorded in the event log and let us know if you find errors.
    To view the event viewer:
    -Click Start, in the start search box tpe eventvwr.msc, and then on enter.
    -Select the Application's entry in the left pane
    -In the right pane, locate the entry for preceded a red X error
     
    It will be useful.
     
    Kind regards

    Srinivas
    Microsoft Answers Support Engineer
    Visit our Microsoft answers feedback Forum and let us know what you think

  • When I delete or move files, I still see the folder until I closed and reopened the record or the refreshment. Why is this?

    pretty much what it says in the title of the topic

    Hello

    1. have you made changes on the computer recently?

    Method 1.
    Let us first start the sfc scan and check if there are any file system corruption.
    a. to do this, click Start, click programs, accessories principally made, right click Guest and then click Run as administrator. If you are prompted for an administrator password or a confirmation, type the password, or click on allow.
    b. type the following command and press ENTER:
    sfc/scannow
    The sfc/scannow command. analyzes all protected system files and replaces incorrect versions with appropriate Microsoft versions.
     
    More information on SFC scan found in this document:
    Description of Windows XP and Windows Server 2003 System File Checker (Sfc.exe)
    http://support.Microsoft.com/kb/310747

    Method 2.
    If the problem persists, then create a new user profile and then copy your current users assigning to this profile. For more information, see:
    How to create and configure user accounts in Windows XP
    http://support.Microsoft.com/kb/279783

    How to copy data from a corrupted to a new profile in Windows XP user profile
    http://support.Microsoft.com/kb/811151

    How to recover damaged Windows XP user profile
    http://support.Microsoft.com/kb/555473

    I hope this helps.

  • File placed in Mac server with read/write access to all the world, but when a Windows machine changes and saves the file, it becomes read-only

    Original title: Excel file permissions

    At my work, all except 2 computers are Macs. I'm one of the only Windows machines. I created an Excel file which I want everyone at the office to access and modify. We have put on the Mac server and changed the permissions for everyone to read and write. I also had that done on the Windows machine before placing it on the server. However, people on Mac machines can open, change it and save it without problem. But if one of the machines Windows opens, modifies and saves, it restores the Mac machines to read-only. Anyone know how to fix this?

    Hi amber,

    Please contact the Microsoft Community.

    I would have you post here for further assistance.

    http://social.technet.Microsoft.com/forums/Windows/en-us/home?Forum=w7itpronetworking

    Let us know if you have any other problem with Windows in the future.

  • Impossible to extract and display the records

    Hi, I'm using Oracle 11 g

    The procedure is compiled without any errors.

    The select statement retrieves records well when they are run in SQL promt.

    But the same records are not displayed in this procedure by extraction of the cursor.

    Last post in the 'done' procedure is also displayed.

    Please help me retriving records.

    --------------------------------------------------------------------------------------------------------

    create or replace procedure disp_rec (vid IN varchar2, vfeat in numbers)
    is

    cursor c1 is select gid, listagg (vindex, ',') within the Group (order by tid) idx from ridrecords where idarpt = vid and feattype = vfeat group by gid;

    type vg is table of number;
    type vi is table of the varchar2 (3500);

    a vg;
    b vi.

    Start

    If vfeat = 0 then
    Open c1;
    loop
    collect the fetch c1 into loose in a, b;
    When exit c1% notfound;
    for indx in a.first... a.Last loop
    dbms_output.put_line ((indx) a | b (indx));
    end loop;
    end loop;
    Close c1;

    elsif vfeat = 1 then
    Open c1;
    loop
    collect the fetch c1 into loose in a, b;
    When exit c1% notfound;
    for indx in a.first... a.Last loop
    dbms_output.put_line ((indx) a | b (indx));
    end loop;
    end loop;
    Close c1;

    end if;

    dbms_output.put_line ('completed');
    end disp_rec;

    It depends on what will be different on the input values.

    Your original example two blocks has done the same at first glance.

    For example, you can do

    Start

    Open c1;

    loop

    collect the fetch c1 into loose in a, b LIMIT l_limit;

    If l_input = 0 then

    ForAll indx in 1... a .count

    Update emp2 ename set = b (indx)

    where empno = a (indx);

    elsif l_input = 1 then

    ForAll indx in 1... a .count

    Remove emp2

    where empno = a (indx);

    end if;

    When the output $a.count<>

    end loop;

    Close c1;

    dbms_output.put_line ('completed');

    end;

Maybe you are looking for

  • R7000 as router with the router for mobile broadband Internet

    Hey guys. First of all, my apologies for my somewhat inadequate English skills. Secondly, I am brand new to the community, so apologies in advance for any fault :-) Third stop, apologize for having a complete beginner :-D So, for the issue: I recentl

  • M6-1105dx upgrade for Windows 10

    After updating my book of m6 11005dx want to WIndows 10, I m getting an intermittent error that my video card AMD has "stopped working" where the screen goes black for a while and then go back. I know that this laptop was not approved for 10 update,

  • Problem: Screen size is smaller in playing games.

    Detail: I loaded my games but his cheek in a small screen (800 X 600) with the rest of the laptop screen blacked out.I tried to play with the game options and laptop screen resolutions has also changed and nothing seems to work. But when I connect my

  • How to understand the reference trigger as a trigger to stop?

    Hello I tried to use an external signal how the trigger works / stop for analog data entry. I had looked for solutions and above all that they suggest to use a reference trigger. But I don't really understand how it is applied. For example, why it sh

  • Is it possible to fix the corrupt save in Fable III?

    I've almost finished the game but then the black screen and the game crashed. I restarted my computer, but don't turn on the game until the next day. So, everything is fine until I get the message that my backup is corrupt. What can I do?