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• How recovery works after an online backup

  Hello
  
  Although conceptually tent understand how backup and restoration works, I stumbled upon a question about the hot (on-line) backup.
  It is a conceptual question (I'm trying to understand how things work), is not a ' how can I do / what should I do step by step "question.
  
  As far as I understand, an online backup of a tablespace can be done by copying files operating system place a tablespace while the database is in place and used (i.e. transactions are changing data in the database). Before the copy of the operating system starts, the Oracle RDBMS should be informed that an online backup is taken through 'ALTER '.... BEGIN "(such as additional information are written to the log again, that may be required for subsequent recovery using the backup online BACKUP). During recovery, the Oracle RDBMS uses copies of the OS as well as the line and archived files redo logs in order to rebuild all committed transactions and it uses more (uncommitted) transactions ongoing restoration UNDO tablespace.
  
  Think about it, it seems to me that, so that it works in all possible scenarios to cancel it, information from moment has been the backup may be required. So the UNDO tablespace backup suits as well (see the explanation of this assumption below). However browsing the internet (including the Oracle online documentation) I find all instructions for the backup of the UNDO tablespace when an online backup is taken. More I couldn't understand when exactly such a backup of the UNDO tablespace must be done to ensure that the database can be retrieved in all scenarios.
  
  I believe that the cancellation as soon as the last hot backup information can be held for example in the following scenario:
  Suppose we take a backup of a given tablespace hot, i.e. we copy all files of the OS that make up this tablespace, while the database is potentially used. Either D1 one of the data files in the space of our table and let the T1 transaction change datafile D1. Allow transaction T1 still be engaged during the copy of datafile D1 are made and allow of (at least part of) T1 changes included in backup D1' D1 (because DBWR has already written the changed blocks to the moment where they have been copied to the backup). Allow transaction T1 be restored once the copy is complete. D1' will therefore include changes in T1, while D1 do not.
  
  Now some time later, the D1 data file is lost. When you get the copy of D1 D1 ", recovery logs (archived) apply to D1. Before that, transaction T1 must be restored in the copy of D1 ", because changes to the T1 should not appear in the version retrieved from the database.
  I have however not, understand the information in the statement rollback transaction T1 out exactly. It can still be in the current UNDO tablespace. I guess however that rollback information is not maintained in the UNDO tablespace forever. I see three possible answers to this
  (a) there are some requirements that missed me so far for the backup UNDO tablespace whenever a hot backup is found.
  (b) given that the Oracle "RDBMS" must be notified that you made an online backup, it can store all the information relevant cancellation (e.g. write it in the redo log) when the tablespace is put in backup mode.
  (c) there are situations where recovery is not possible due to the "old UNDO information missing.
  
  Answer (b) seems the most plausible to me. However, I found no confirmation of this and if (b) is really the answer, I'd be interested to understand what information is stored where by the RDMBS Oracle and how it is used for recovery.
  
  To summarize, I have the following questions:
  (I) is there any obligation to save the UNDO tablespace and an online of a tablespace backup, and if so, where is this stated in the Oracle documentation?
  (II) mechanisms to ensure that uncommitted transactions can be identified the copy a tablespace online (potentially very long once the copy has been made)?
  (III) you know all the links (Oracle documentation or other online resources) explaining these datails?
  
  Thank you for any advice and answers
  Kind regards
  Martin

  However I don't see how T cancellation of transaction information can be recovered without such a backup of the UNDO tablespace

  Taking your scenario that only datafile D is lost and only this data file must be restored when the loss is discovered in time t8:

  At the time the restored datafile D t9 is from t4.

  However, Oracle notice now that, while the rest of the database (i.e. all the other data files) from t9, this data file is from the t4. This cannot be permitted (a data file cannot be inconsistent with the rest of the database unless it is offline). That's why Oracle requires you to RECOVER DATAFILE D.
  Get it BACK then if applies to all again them (archivelogs) T4 starting until t9 that relates to this data file.
  The price drop happened in the t6 is also re-played - of the redo (no cancellation). {Don't forget that again picking up all of the changes, including restorations! so the cancellation at the t6 was also captured in it again!}
  For example, the data file is presented in a consistent state without having to redo cancel them.
  No matter if the information contained in the cancellation had been released and crashed between t6, t8 and t9.

  When Oracle made a recovery of media to a data file, there no need to cancel - media recovery does not care if the blocks are table, index, LOB, transactions, commits, restorations; It was simply a record physical of all the changes.

  PS: This has nothing to do with what version you use V6 11.2
  If the tablespace is called 'UNDOTBS1' or 'RBS' is irrelevant.

  Hemant K Collette
  http://hemantoracledba.blogspot.com

  Published by: Hemant K grapple Sep 28, 2010 22:16

  Published by: Hemant K grapple Sep 28, 2010 22:21

  Published by: Hemant K grapple Sep 28, 2010 22:22

• Adobe Reader has stopped working - how do I solve this problem?

  It's really annoying as whenever I try to use the free software adobe reader has an adjustment and an error - Adobe Reader has stopped working.

  I re-installed this and this again

  Help! its driving me crazy!

  Some things you can try...

  • Using Windows Explorer navigate to C:\Program Files (x 86) \Adobe\Reader 11.0\Reader, and then double-click Eula.exe and accept the license agreement
  • You can open Adobe Reader by itself?  If so, try to disable the Protected Mode [Edit |] Preferences | (Improved) security].
  • If Reader opens in itself, try to disable the Safe_mode in the registry; Download, unzip, then run the attached registry script
  • It might even be a malware problem; See http://helpx.adobe.com/acrobat/kb/reader-core-dll-error.html

• Pavilion dv6 fingerprint reader has stopped working

  My fingerprint reader has stopped working. I can open the Simple pass identification program but when I click on fingerprints, it indicates 'identity check' with an hourglass on the top of the icon of fingerprints, and no matter how long I wait, that's all that happens. All advice appreciated.

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

  Pavilion dv6t laptop 3100, Win 7 Home Premium 64-bit, 8 GB of RAM, processor i5

  "Where you go, there you are."

  Hi Mikey,

  Looks like you're running the Digital Persona of SimplePass flavor.

  Two things to consider / try, in order.

  If the reset works, you don't have to reinstall the driver...

  • Hard reset
  • Reinstall the driver

  Hard Reset:

  Sometimes, all you need to do is the computer suddenly.  This method works for a variety of connection and "glued" program issues.

  • Disconnect all the external devices first.
  • Remove the AC power and battery
  • Press and hold the power button while in the minus 30 seconds
  • Reinstall the power supply for the first start only * see Note
  • Power on - connect
  • Next time you shut down the system, replace the battery.

  * Note: You can ignore the little battery aside.  If you wish, replace the battery the first time and do it with her.

  =====================================================================================

  The pilot, from your Internet site:

  Validity fingerprint sensor Driver sp52354 V2.1.0.2

  • Install the validity sensor Driver installation package: it if called sp*.exe - the package will be most likely located in the downloads folder.  If you have control of "Admin", you can highlight the package and "double-click on ' to install it, otherwise just right-click, select"Run as Administrator"and install.

  I hope this helps!

  It's my pleasure to help.

  Say "thank you!" to the help by clicking on the star of Kudos to show your appreciation.

  Fixed?  Mark this message 'accept as Solution' to help others find the answers.

  Note: You can find "Accept as Solution" only on the threads started by you.

  Good luck!  Year of the Dragon!

• SD card reader does not work

  1 hp Pavilion Dv7-7002el

  2. Windows 7 64 bit

  SD card reader does not work

  Thank you

  Welcome to Brunn.

  Try to run this driver.

  http://h10025.www1.HP.com/ewfrf/WC/softwareDownloadIndex?softwareitem=ob-102462-1 & CC = US & DLC = in & LC = on & os = 4063 & Product = 5254140 & sw_lang=.

  Let us know how things will go.

  REO

• Product name: HP 15 Notebook: my card reader does not work - Mute red light does not

  My card reader does not work

  It happened several times after the upgrade to Windows 10

  It may work once or twice after the upgrade, but when there is an update from HP

  My antiverious is Kaspersky internet security and it is compatebale with windows 10

  Also, the Red mute botton does not work but the function works.

  your opinion and your support is appreciated

  Product number: L9N79EA #A2N

  Product name: HP 15 laptop

  Windows 10 House only 64-bit language

  Hello @KhaledMorcy,

  I understand that you are having a problem with your card reader and wanted to help you!

  Have you tried to use Windows Updateto search for the drivers that are compatible with Windows 10?  You can consult this site too: products HP - where can I find drivers Windows 10 and software for my model?

  If you have problems to install the drivers, you can use the tool on the following site:

  Open the Windows Update troubleshooting tool

  It is possible that the drivers are not available for your product.  If this is the case, or the drivers you found do not work, try to use the solutions on this site to work around the problem and let me know how it goes: how: install and update drivers in Windows 10

  Also, check out the following document, as it can help to solve the problem for you:

  HP laptops - use and troubleshooting (Windows 8) memory card readers

  Please let me know if this information has been helpful by clicking the thumbs up below.

  Have a great day!

• ENVY dv7-7201sa Finger Print Reader does not work

  The fingerprint reader has stopped working. Before, I thought I had genuine driver installed, now there is driver driver. Not sure how it happened.

  I uninstalled the driver drivers and pass SImple, but the single pass software download link is no longer available, what are the correct drivers, and where are they

  Thank you

  Tony,

  If you tell the AuthenTec link for the 6.0.100.620 old version of HP SimplePass, it is probably closed.  AuthenTec has been picked up by Apple last year, and they are «not more»  The drivers are still in the area - the name depends on the original software / driver source code.

  For Windows 8:

  Your valid driver - download and install not yet:

  sp58900 validity sensor V4.4.234.0 Win8

  Reference: ENVY HP dv7-7201sa Notebook PC drivers

  Instructions for installing the driver and HP SimplePass later that works on Windows 7 or Windows 8 are in the following file.

  Find, open, and follow the procedure described in the file named: simple instructions for upgrade HP SimplePass

• How encryption works in the web services connector?

  Hi, I wanted to ask if someone could explain or point me to somewhere where its explained how encryption in Web Service connector (connector guide did not help) because I feel like there is a black box in the way that works part of the connector.

  This is what is happening to me.

  When I request an account the IOM sends to the SOA, a SOAP message with this field:

  user < __NAME__ > < / __NAME__ >

  Do0emq9XxVlYdbBxRUFSpciLqp77p6WYXQzATr8UysI = < __PASSWORD__ > < / __PASSWORD__ >

  But SOA sends a SOAP like it even though im using the oimcp/WS_CONNECTOR_OUTBOUND to decrypt the way that the Webservices connector Guide tells me to do section 5.1

  the user < USER_ID > < / USER_ID >

  Do0emq9XxVlYdbBxRUFSpciLqp77p6WYXQzATr8UysI < PASSWORD > = < / PASSWORD >

  < PasswordConfirm > Do0emq9XxVlYdbBxRUFSpciLqp77p6WYXQzATr8UysI = < / passwordConfirm >

  Somehow the DB records the real password not the hash, but if the size of the password in the DB field is smaller than the size of the hash I get a SQL error even if the

  password real has the right length. And change the size of the field in the DB is not always an option.

  Happents another odd thing, is that if I do not declare the passwordConfirm field in < property name = "password.field.xpath.locations" type = "xs: String" > / ns3:PASSWORD, / ns3:passwordConfirm < / property > even if the sending of SOAP by the SOA is always: "

  the user < USER_ID > < / USER_ID >

  Do0emq9XxVlYdbBxRUFSpciLqp77p6WYXQzATr8UysI < PASSWORD > = < / PASSWORD >

  < PasswordConfirm > Do0emq9XxVlYdbBxRUFSpciLqp77p6WYXQzATr8UysI = < / passwordConfirm >

  I get the error that do not match the password and passwordConfirm.

  And to make things even more bizarre if I wire the password, lets say, e-mail and declare this field as needed the decryption of the stored value is the hash. Even if the password is the normal password.

  Also, is there a way for the SOA to send the password in plain text?

  Hello Leo,

  If you have correctly configured oimcp/WS_CONNECTOR_OUTBOUND policy, there should not be any errors and it works without problem.  Unhappiness about using policy - is that the errors you will see when it does not work are not really useful to discover the cause of the problem.  In fact, the most useful tool I found the resolution of the problems with politics is WireShark.

  I used the strategy in multi-instance test scenarios and also support for several customers who try to use the policy.  From my experience, I guess that decryption is being ignored due to an error in your code. If WireShark gives you not with sufficient detail to indicate where the error is, I would say a SR in support to solve the problem more openness.

  Hope that helps,

  Amy

  -----

  When closing a thread as answered don't forget to mark the messages correct and useful to make it easier for others to find.

• How to reset AirPort Extreme 10.11.6 OS? How to work with this pinhole? I'm trying to get rid of this flashing yellow light, which began after I installed a new modem from Comcast.

  How to reset AirPort Extreme 10.11.6 OS? How to work with this pinhole? I'm trying to get rid of this flashing yellow light, which began after I installed a new modem from Comcast.

  How to work with this pinhole?

  Usually a paperclip or toothpick or ball pen.

  Stick it in the hole and reset for about 10 seconds until the front led flashes quickly.

  How to reset AirPort Extreme 10.11.6 OS?

  The software method... Unlike the above material method... is to open airport utility and select restore default settings.

  

  Both methods take you to the same place.

  You can also read the manual...

  Reset to a base station AirPort FAQ - Apple Support

• How iCloud works for documents?

  So, I was working on a Word document between two different iMacs.  To keep the documents in sync, I have it stored the iCloud drive.  May 17, died the main iMac that I used to work.  Now I'm trying to restore the iMac that died, but I expected the document in phase.  When I went to my other iMac to continue working the iCloud drive shows the word document to have an update date of May 11.  Basically, I lost six days of work.

  I had assumed that iCloud drive could be used a shared drive between computers - like Dropbox or 1prediction.  But this isn't the case or something unusual broke my sync files to the cloud.

  So how does iCloud?  It is not synchronize whenever a file is updated, but uses another system?  I just want to understand how it works if it does not happen.

  Otherwise I could use Pages that seems to work as I expect to work the synchronization whenever there is a change, but in this case the word is the right tool, not Pages.

  Thank you.

  Read what it should answer most of your questions- https://www.apple.com/support/icloud/icloud-drive/

• How to "work offline"?

  It's crazy, but I can't find out how to work in offline mode. I just have to shut down the internet. Where did put the option work offline?

  You can also find the item menu to work offline in the list of drop-down tools developer.
  You can find the developer tools button in the list of the menu button Firefox '3-bar' and the possible drag this button on a toolbar.

• The right side and express USB card reader does not work

  Hello

  The USB 3.0 right on my rMBP does not work. I have can´t to connect any device to this side. No connection or power.

  Express card reader doesn't work or the other. Finder or disk utility will not show map of mountain.

  I can´t find the card express under system reports reader.

  I ran a test for diagnosis of Apple without any problem.

  I have reset the SMC & LANDAU.

  I reinstalled the operating system without success.

  Anyone who knows how to fix this?

  MacBook Pro with OS X El Capitan 10.11.5, Retina display

  Can someone help me here, please!

  Based on what you have tried and if can't see any device in disk utility, you are dealing with a hardware problem.  Your best option is an appointment at an Apple store for a FREE genius bar.

  Ciao.

• How cache works on an iPhone?

  Thus, if only a topic has an application that he has legally downloaded on the apple App Store in memory cache, video/audio from youtube videos. And it "covers" any song you want.

  1.) does take space on the memory embedded phones (iPhone 16 gb)

  2.) after about 500 songs cached will there be performance implications? Because that I do not know if the cache is an accessible memory write is in and of its own which would get clogged after a lot of files are cached.

  3.) why can't I just check the size of the apps file to see if it uses the said files system memory "cached".

  BASICALLY, I FOUND an ALTERNATIVE to ITUBE, where songs are "cached" actually stored? Do not want to waste space that I have only a 16 gb iPhone

  1 - Yes

  2 - Yes

  3. I think because that's not how iOS works.

  Is your phone jailbroken?

  How do you think your phone to store the songs without taking up space?

• Mac pro tech specs and how upgrades work apple hardware?

  Hello guys,.

  My colleague from modding pc just got a mac pro and I have just read his record about 5 minutes ago and I discovered there xeons, ram ecc and over-pants on it. I've never touched before apple products, and I don't know how they work. So I came here for your help.

  I see similarities to the msi with the mac pro vortex. Motherboards are the same? even if they are, does anyone have full features on the mac pro?

  -The moterboard chipset?

  -Which plug to use?

  -Number of pcie 16 x housing?

  -Output power of psu Board?

  -Number of fan on the motherboard headers?

  -Support hotswap and raid?

  -MOST IMPORTANT: how to enter the bios?

  Main question:

  I want to try to Exchange and equip inside the mac pro with what is on the test bench for a project at random and to see the scores of benchmark on apple os and etc will this work? (As I said it, a 0 on the orders of apple experience)

  * material I want to Exchange in the mac pro: there is a 980ti of reference and sticks of ram ddr4 hyperx to the test

  What model Mac Pro?

  How to identify models Mac Pro - Apple Support

  Start is a small trash can black or silver 35 lb round?

• Tecra 9000: SD card reader does not work with XP

  I've made some progress on this issue, it seems that Cardbus devices cannot share IRQS, although the main problem is that FFDFB200-FFDFB3FF memory address is shared by the SD card controller and device memory SD card. Unless we find a way to edit the registry to resolve this conflict of memory, the simple answer is that the SD card reader does not work under XP.

  I think that it would take a major surgery of the register or re-writing of drivers to move the address of memory used by the SD card device, I always work on this for now.

  Can someone support Toshiba or Toshiba Marketing explain to me why my Tecra T9100 has a "Designed for Windows XP and Windows 2000" sticker on it, when Toshiba does fully support XP on the 9000 series?

  David

  [Edited by: admin]

  Hi David

  Unfortunately, I n t think that you will find here a Toshiba marketing person or other departments. It is ONLY a user to user forum.

  What you say, it is simply NOT true.

  The Tecra 9000 was delivered with 3 different OS.
  It was delivered with Windows XP Pro, W2k and Win98. You can order all the images of this Toshiba home Toshiba service partner. That's why Tecra 9000 does support Windows XP!
  Tecra 9100 has been bundled with Windows XP and Windows 2000 and also supports Windows XP!

  Of course, there are different models with a different hardware configuration, but all supports Windows XP.

  I put t know why you get this error message or why you cannot use the SD card, but I guess you don t use the image of Toshiba. That's why you installed your operating system isn't properly. Because you are a newbie you don t know the Toshiba all the driver installation must be done in the right order and all Microsoft QFEs must be installed also.

  As you can see you must pay attention to many important things if you want to manually install the operating system.

  Good day