Read data larger than the DB buffer Cache

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• Updated data are larger than the buffer cache

  Hi Experts,

  I have a small request. I have a table called CONTENT to have 12 GB of data. Here, I pulled a single update statement that updates to 8 GB of CONTENTS table of data using 1 GB of database buffer cache?

  How 1 GB of the Database Buffer Cache will be used to update the 8 GB of data? Level architectural any additional changes will happen (than usual) when executing "Updated data is larger than the buffer cache"?

  Could someone of you please response. Thank you

  Database: 10.2.0.5

  OS: Power 5-64 bit AIX system

  Hello

  the basic mechanism is the following:

  needed to update data blocks are read from the data files and cached in memory (buffer cache), the update is made to the buffer cache and the front of the (UNDO) image is stored in the segments of cancellation, operation (update here) is re-encoded to redo buffer until it goes again files If the buffer is samll or we need more space in the buffer cache, or we have a control point or... Oracle writes back the block modified data files to free the memory buffer for the more blocks.

  While the other runs the update of transactions can read before you change the image of CANCEL if validation, at the end of the transaction done change is confirmed and validation is recorded in the redo. If the cancellation is made at the end of the transaction before the image is "restored" and rollback is saved in do it again.

  Concerning

• Shared pool larger than the buffer cache

  Hi all
  
  My database is 10.2.0.4 running linux platform
  
  No .of 2 cpu, RAM-2 GB
  
  SGA_TARGET wa set to 1 GB.
  
  Initially the memory have been configured as a shared pool around 300 MB and the buffer cache about 600 MB.
  
  When I questioned the v$ sga_resize_ops views I found some interesting results.
  
  Many operations and growth reduction were happened and the current size of the shared pool is about 600 MB and buffer cache is 300 MB. (this happened during last 1)
  
  I guess that the buffer cache must always be larger than the size compared to a shared pool. My assumption is right?
  
  Is it because of sql code using the do not bind variables resulting in growth shared pool? No relaods and radiation are almost ignored I think it should not be the case.
  
  Also no lock events listd in the top5
  
  I've also seen the 15% of the shared pool is marked as being of kGH:NO ACCESS, which means that the part is used for the cache buffers.
  
  Should I set the lower limit for the shared pool and the buffer cache or can I just ignore it.
  
  Thank you
  rajdhanvi

  You change your question now... your question was that he has sharedpool large size > buffer cache is acceptable... . Check your own second post... for your new question now is why pool continues to increase and partly used as buffer cache... the proof is given by tanel poder y what happens when EAMA is used... For the Kingston general hospital: NO ACCESS means that no one else could touch...

  Concerning
  Karan

• LMD are in the DB buffer Cache?

  DB version: 11.2.0.4

  OS: RHEL 6.5

  Oracle documentation defines "database buffer cache" in the following way

  "The buffer of database cache, also called the buffer cache, is the area of memory that stores copies of data in blocks to read data files"

  http://docs.Oracle.com/CD/E25054_01/server.1111/e25789/memory.htm#i10221

  Let's say that the following UPDATE statement updates 100,000 records. The server process go get all the blocks that has the matching records and place it in the DB buffer cache and updates the blocks. This change metadata are recorded in the restore log buffer by progression. At the next checkpoint changed blocks are written to the data files. Right?

  Employee UPDATE

  SET salary = salary * 1.05

  The EMPLOYEE

  WHERE deptnum = 8;

  basically: Yes, once again. Oracle has rewritten Sales buffers (i.e. buffers with different content than the corresponding blocks on the disk) on the drive under certain conditions. If the operation is cancelled, the blocks must be read again in the cache and change must be cancelled (and written).

• What else are stored in the database buffer cache?

  What else are stored in the database buffer cache, except the data reading of data files blocks?

  The nitty gritty on this point, you ask someone smarter than me waaay.

• clarification of term required for the DB buffer Cache

  Hello!!
  
  Here, I have a very basic conceptual question, DB buffer Cache contains the data read from the data in the file as well reduce the disk i/o of fom and oracle. If suppose that the table is constantly questioned and remains in the DB buffer cache all the time, how does oracle ensures the user gets the latest information?

  The database buffer cache is a part of the zone system Global (SGA), which is responsible for caching of blocks accessed frequently for a segment. The subsequent transactions involving the same blocks can then access them from memory, instead of from the hard disk. The works of cache buffer of database on the basis of least recently used (LRU algorithm), according to which the most frequently accessed blocks are kept in memory while the less frequent are gradually.

  See this link

  http://www.Stanford.edu/dept/ITSS/docs/Oracle/10G/server.101/b10743/memory.htm :)

• Videos larger than the window display.

  I recently started having a problem with my g6 Pavilion by watching videos.  I noticed first on YouTube, but also can't play .mp4 files in Media Player.  I see that a small part of the video, it is larger than the window full screen, or display in this mode.

  After making sure the flash drive was up to date and quicktime (was grabbing at straws) I found that AMD video Steady was the issue.  Disabled and viola, playing the videos properly.

  Thanks for the suggestions anyway.

• Error: The file size for all drives of paging can be a little larger than the size you specified, when you open windows in Windows 7

  Original title: paging notice when open windows on mac, divide the hard disk

  I have a split hardrive on a MAC and windows, and quickbooks installed on this drive.  When I open windows, I get a notice of paging file.  -size of the paging file.  "The file size for all drives of paging can be a little larger than the specified size.  IM using Bootcamp for the windows side.  It is to show the memory almost full and I did not yet get many date in QB.  Don't know what I have to do.

  Hello

  1. have you done any software or changes to the material on the computer before this problem?

  2. it worked correctly previously?

  3. how many hard drives are in the computer?

  4. is the problem with a partition or a particular hard drive?

  Try the steps from the link.

  Change the size of virtual memory

  http://Windows.Microsoft.com/en-us/Windows7/change-the-size-of-virtual-memory

  What is virtual memory?
  http://Windows.Microsoft.com/en-us/Windows7/what-is-virtual-memory

  Hope this information is useful.

• < Unspecified file name > file is larger than the maximum size supported by datastore '< indeterminate datastore >.

  I know that this issue has much spoken in the forums, but the answers are always to make sure that your block sizes are set to 8 MB - mine are already. Let me explain:

  I have a virtual machine with a large amount of connected storage - something along the lines of discs 10 x 1.99 to. Sit all VMDK on partitions of the VMFS of 8 MB of size block, including the configuration of the VM (location of the pagefile).

  Every time I try and snapshot of the virtual machine, I see the "< unspecified file name > file is larger than the maximum size supported by the data store ' < unspecified datastore >. All other virtual machines instant fine, but any other VM has a similar amount of storage as the VM problem.

  I have now moved the configuration files of the virtual machine to a new partition VMFS 5 of 1.91 TB, but the instant error persists. Most of the readers is sitting on VMFS 3.33 or 3.46. It will take me a while to move all VMFS 5 to see if that solves the problem.

  VMware.log for VM reports:

  2011-10-09T09:55:55.328Z| vcpu-0|  DiskLibCreateCustom: Unsupported disk capacity or disk capacity (2186928627712 bytes) is too large for vmfs file size.
  2011-10-09T09:55:55.328Z| vcpu-0| DISKLIB-LIB   : Failed to create link: The destination file system does not support large files (12)
  2011-10-09T09:55:55.328Z| vcpu-0| SNAPSHOT: SnapshotBranchDisk: Failed to branch disk: '/vmfs/volumes/4dc30ba3-b13c5026-92d8-d485643a1de4/spoon-app/spoon-app_2.vmdk' -> '/vmfs/volumes/4dc30ba3-b13c5026-92d8-d485643a1de4/spoon-app/spoon-app_2-000001.vmdk' : The destination file system does not support large files (12)
  
  

  My VMDK and volumes are smaller than 2032GB. I don't understand why, it's be a problem.

  Anyone have any ideas?

  Although ESXi 5 supports larger LUN as a raw physical devices (up to 64 TB), the maximum size of a virtual disk has not yet changed.

  André

• CKPTQ in the database buffer cache and LRU

  Hi experts
  
  
  This feature can settle in cache buffers data base Oracle 10.2 or higher.
  Forums of sources: OTN and 11.2 Concepts guide
  
  According to my readings. To improve the functionality and make it more good American cache database is divided into several zones which are called workareasNow more
  
  Zoom this each activities will store multiple lists to store tampons inside the database buffer cache.
  
  Each wrokarea can have one or more then one lists to keep the wrokordering in there. The list of what each activity will have therefore to list LRU and list CKPTQ. LRU list
  
  is a list of buffers pinned, free and sales and CKPTQ is a list of stamp Sales. We can say THAT CKPTQ is a group of stamps Sales ordering of RBA weak and ready to be flushed from the cache on the disk.
  
  CKPTQ list is maintained by ordering of low RBE.
  As novice let me clearly low RBA and RBA senior first
  
  RBA is stored in the header of the block and we will give the information on which this block is spent and how many times it is changed.
  
  Low RBE: low RBE is the address to redo the first change that was applied to the block since his own last.
  RBA high: the high RBA is the address to redo the last change has been applied to the block.
  
  Now back to CKPTQ
  It can be like this (pathetic CKPTQ diagram)
  
  lowRBA = high RBA
  (Head of the CKPTQ)                         (CKPTQ line)
  
  CKPTQ is a list of stamp Sales. According to the concept of the RBA. The most recent modified buffer is at the tail of CKPTQ.
  
  Now the oracle process starts and try to get the DB cache buffer if she gets a buffer it will put an end SRM to the list.and buffer buffer LRU will become the most
  
  recently used.
  
  Now, if the process cannot find a necessary buffer.then first, he will try to find free tampons to LRU. If he finds his most he will place a datablock to the data file in the
  
  place where free buffer was sitting. (Good enough).
  
  Now, if the process cant fnd a buffer without LRU then first step would be he will find some Sales swabs at the end of the LRU to LRU list and place them on a
  
  CKPTQ (do not forget in the low order of RBA he organize it queue of CKPT). and now the oracle process will buffer required and place it on the end of the MRU of LRU list. (Because space was acclaimed by the displacement of Sales to CKPTQ buffers).
  
  I do not know of CKPTQ buffers (to be more precise tampon Sales) will move to datafiles.all buffers are line up n lower CKPTQ RBA way first. But
  
  emptied to datafile how and in what way and to what event?
  
  That's what I understand after these last three days, flipping through the blogs, forums and concepts guide. Now miss me you please erase me on and off it
  
  I can't bind the following features at this rate... It's
  
  (1) how the work of additional checkpoint with this CKPTQ?
  
  (2) now, what is this 3 second delay?
  
  (Every 3 seconds DBWR process will wake and find if nothing to write about the data files for this DBWR will check only CKPTQ).
  
  Apartment 3) form 3 second funda, when CKPTQ buffers will be moved? (IS IT when the process is unable to find any space in CKPTQ to keep buffers LRU. Its a
  
  moment where CKPTQ buffer will be moved on the disk)
  
  (4) can you please report when the control file will be updated with checkpoint so it can reduce recovery time?
  
  In many ques but I'm trying to build the entire process in mind that its operation may be I can be wrong in any phase in any stage, please correct me upward and
  
  Take me @ the end of the flow.
  
  
  Thank you
  Philippe

  Hi Aman,

  Yes, I a soft copy of ppt or white paper "Harald van Breederode" of 2009.

  -Pavan Kumar N

• The size of the estimated value of the project is larger than the chosen target support

  I am at a loss for trying to create a project using Adobe Encore.  I tried initially to the author of the project using the CS2 version.  When you try to export, I received the following message is displayed:

  "The size of the estimated value of the project is larger than the chosen target support.  While it is an estimate, the project may not build. »

  I have created hundreds of projects in the past, but have never received this message before.  I first thought that the problem was with the release of still I used, but I got the exact error that even trying to create the project with Encore CS5.

  The project itself has a menu, a motion menu, and a single video file.  The video file 152 last minute, and I was trying to export that to a double layer DVD.  I tried from the file using CS5.5 Adobe Premier export using a variety of parameters.  I'm trying to export it to a file DVD-2, with the attributes of soure game being the highest value.  The parameter on the main concept MPEG encoder is set to 5. I tried to export the file by using the constant and variable bitrates.

  When I recently exported the file using a contant 6.5 sampling rate, I still 650,4 Mo still remaining on my project.  I still received the same error message on the size of the project, and so I think that something is wrong.

  I even exported the video file into an AVI file compressed and then tried to coding again using CS5.5 Adobe Premier and Adobe encoder.  I always get the same error message on the size of the file.

  Any help or suggestions on how to solve this problem would be greatly appreciated.  Thank you!

  If you do not finish with wasted discs...

  Create an ISO (yet), or a folder on your hard drive (still or Premiere Elements), then use the FREE http://www.imgburn.com/index.php?act=download to write files or folders or ISO on DVD or BluRay drive (send the author a PayPal donation if you like his program)

  .

  ImgBurn will read the mark of REAL from the disk drive, which isn't always the same as the label for the box (Memorex is known for 'nothing' buy and put inside a box of Memorex)

  .

  When you write on the disk with Imgburn, use speed SLOWEST possible setting, so your burner has the best chance to create "good, well trained" laser drill holes... Since no DVD drive is required to read a burned disc, have a 'good' after a try to white high quality will help

  .

  Use Taiyo Yuden simple layer or layer two Verbatim

  Or Falcon Pro for inkjet printable two layer

• ORA-01438: value larger than the precision specified for the column '

  When inserting the different entries of cheaper products in this table PF_PRODUCT_VIEWS_PROFILE, I'm having this problem of "java.sql.SQLException: ORA-01438: value larger than the precision specified for the column '.»
  
  
  As I see it in the tables (desc pf4. PF_PRODUCT_VIEWS_PROFILE; & PFCA4 of ESCR. DCS_PRICE_LEVEL;), I see the accuracy for the price of the table PF_PRODUCT_VIEWS_PROFILE as NUMBER (12.7) & accuracy for the price of the table DCS_PRICE_LEVEL as NUMBER (19.7). There is therefore a difference in precision 7 units for the price in the PF_PRODUCT_VIEWS_PROFILE table that is causing this problem. So that would be the solution.
  
  
  Could you please post my comments, so that I can change the accuracy for the price of the PF_PRODUCT_VIEWS_PROFILE table.
  Need to confirm other columns in the table PF_PRODUCT_VIEWS_PROFILE does not exceed their precision values before making this change.

  Hello

  Ideally avoid data loss as you increase the length of the column as it really is. You have to worry about this in the case if you reduce the length. It is always better to be doubly sure, so also check other tables.

  see you soon

  VT

• Now, the screen moves as the surface is larger than the actual size of the screen. I checked its display options, but how do I disable this screen oversized?

  Hello

  My mother was a member of the family to try to help inrease size but Bobo and now its screen in any program or simply from bottom of screen size is larger than the size of the screen.  She can move the mouse to the left to bring the extreme left veiw and then the same thing right but never have all the screen in veiw now.  How to restore to normal for her.  I tried control - display, but not... help her please help me

  Hi M Carmel,

  Thanks for posting in the Microsoft community.

  I understand that you are facing the issue with the resolution of the screen display.

  I suggest you to see the links and check.

  Change the resolution of your monitor

  http://Windows.Microsoft.com/en-us/Windows-XP/help/Setup/change-monitor-resolution

  Change your screen resolution

  http://Windows.Microsoft.com/en-us/Windows-XP/help/change-screen-resolution

  Please follow these recommended steps, review the additional information provided and after back if you still experience the issue. I will be happy to provide you with additional options available that you can use to get this resolved.

• Make the wallpaper slightly larger than the screen

  Hello

  I work with the simulator of the storm. I know that the screen size is fixed (obviously; "I think it's 320 x 480), but I want to make a slightly larger background image and allow scrolling horizontally and vertically.

  In other words, I want to be able to make a pan larger than the image of the screen; An image that has limits.

  I say, "which has limits," because I tried this, but the image is tiled, instead of being a single. A TI seems constantly to the left and down. Any help please.

  USE_ALL_HEIGHT and USE_ALL_WIDTH are a problem, as I predicted. Since you give your MyScreen VERTICAL_SCROLL and HORIZONTAL_SCROLL, it gives her children a height and a width of Integer.MAX_VALUE > 1. USE_ALL_HEIGHT and USE_ALL_WIDTH do all that great width and height.

  In order to make the screen exactly the size you want to substitute sublayout and take a look at net.rim.device.api.ui.Manager setVirtualExtent and setExtent methods. Some of the best examples of the override of this method are found in the code of

  Implement advanced buttons, fields and managers

  This code can be considered a bible of the BlackBerry user interface programming (Finally, at least for non touchscreen devices).

• First paragraph of the text is larger than the following paragraphs

  I have a page with a lot of text on the subject. For some reason, the first paragraph seems larger than the following paragraphs. But all that I checked shows that they are identical in terms of specs. I copied/pasted/no formatted/spruced up... but no matter what I do, that first paragraph is looking to be bigger! Is this some secret parameter that I don't know?

  I took screenshots and they are indeed the same size. But that first paragraph seems just different! Why would it be?

  I have attached a screenshot. Let me know if my client and I are just seeing things.

  Julie

  

  Seems to be the same size.

  See the image below, the first line of paragraph 2, overlapping the first paragraph. (o during even as o in the company)

  Can be an illusion of perspective due to all caps in the first paragraph.