AnyConnect VPN - how to find the high-water mark?

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• What is the advantage of the high water line?

  Hello

  When I remove the enormous data in table then the high water mark always on the same position.

  1. then deleted block still on the data file then why? I understand that these blocks is not used and it is empty so when he used?

  2-why oracle do not recover these block when automatically delete us the records? and we must do to help shrink the command?

  3 - Why before retractable data we must allow movement of line? What is the meaning of movement of the line. and why it is disable by default, no impact on performance so afford him?

  4. i try to reduce and remove the space allocation for some gigantic data, but still tablespace free space is always the same, does that mean?

  Thank you

  (1) the deleted data are always in the data file, because it is the least expensive way to implement a delete.  It is much faster to just things like free brand rather than incur the cost of, say, block formatting when the last line is deleted.  Most of the time, you remove one or two lines - it would be unwise to undergo as a load whenever you delete a few lines.  Free blocks will be used during the insertion of subsequent data (or during subsequent updates increase the size of existing lines and have to migrate to the new blocks).

  (2) because the shrinkage of the segment is expensive.  If you did that every time that you deleted a single line, deletions would be orders of magnitude more expensive than they are today.

  (3) because the shrinkage of the segment means that you physically move potentially every row in the database.  From a functional point of view, this amounts to potentially remove all the ranks of the block in which it is and moving it to a different physical location at the 'head' of the segment so that all free space is at the "tail" of the segment and can be released.  Of course, it is unlikely that all ranks have actually be removed and reinserted.  But a significant fraction of them.  Among other things, this will change ROWID line that would break any code that was waiting for the ROWID remains constant, this is why you need to activate the movement of the line.

  (4) you must show us exactly what you are doing (the exact series of commands that you run, how you measure the free space, etc.).  If you just insert roughly the same amount of data in the table that you deleted over time, shrinkage of the segment is unlikely to be useful.  From the point of view of application performance, for example, you only care about high tide if you perform a full scan of the table.  But it is rarely wise to write code that is to do a full scan of a table that is large enough so that you can delete a 'huge' of data in the table number.

  Justin

• How to find the question after hp support assistant opening when the icon indicates the red exclamation point?

  Hi guys,.

  A new pavilion g6 and sometimes get the red exclamation on the HP SA but when I open the screen of the wizard how to find the issue which marked the icon?

  The Assistant has just opened, and I see the screen normal but not extra "Pavilion" to tell me what needs attention?

  Is this normal?

  See you soon!

  Ian

  screenshot of open SA HP...

  

  Hello again, TheHandyCrowd, and ionamartin123.

  Made this suggestion solves your problems?  I was curious about the result.

  I hope that you are having a great day!

• The high water in the data file

  What is the concept of the high-water line in the data files? What is its use?

  >
  What is the concept of the high-water line in the data files? What is its use?
  >
  High waters indicates the end of the space used in a segment. which means no space beyond the mark has been used.

  The doc of database concepts
  http://docs.Oracle.com/CD/B28359_01/server.111/b28318/logical.htm
  >
  High tide is the boundary between the old and new space within a segment.
  >

  Two main uses are the direct path loads and loads Parallels. Each of these adds to the data above the high water mark of a segment and then moves the mark at the end of the data that have been added. These loads are faster, because the freelists and extensions and the blocks being loaded must not be checked for existing data.

  DBA Guide
  http://docs.Oracle.com/CD/E11882_01/server.112/e17120/tables004.htm
  >
  All INSERT operations of direct-path series of accesses, as well as parallel direct-path INSERT into tables partitioned, insert data above the high waters of the segment line hit.
  >
  Each of these documents has additional information on the processes used.

• Doubt on High Water Mark

  Oracle 9i
  
  The high water to _TABLES s/n
  
  The data dictionary keeps track of blocks that have been populated with lines. The high water is used as end marker during a full scan of the table.
  
  High waters are stored in DBA_TABLES. BLOCKS
  
  My doubt is
  
  When the full Table Scan is performed
  
  When the table contains fewer blocks DB_FILE_MULTI_BLOCK_READ_COUNT under high water, which can be read in a single I/O call, regardless of the fraction of the accessed tables or current index
  
  Dount 1
  which means according to my understanding, correct my if I'm wrong
  
  That a table contains blocks and if the number of rows in the blocks is lower than statistics in DB_FILE_MULTI_BLOCK_READ the optimizer based on CSSTidy then performs a full table scan to retrieve the data in a single I/O transaction
  
  Question 2
  If a table TabA contains 3 blocks B1(A1,B1,C1), B2(A1,B2,C2), B3(A1,B3,C3).
  
  Now if the data A1, B1, C1, A2, B2, C2 are deleted then the blocks B1, B2 are deleted or they will be empty
  
  Question 3
  When the last full scan of the table is performed on the Table in TabA, the high tide is set at top of B1.
  (According to my understanding high water mark is set by the last full table on a table scan)
  
  Then when data are removed i.e. edata in B1, B2 deleted then the high water mark is reset to B3 or is it still top of B1
  
  If it's still high in B1 then
  When the optimizer tries to determine what type of analysis to extract the table (A1, B3) data
  
  So how it will determine if, to make the full Table Scan, i.e. If the tide is not reset then when he tried to pick up the A1 then block 1, 2 are empty, but if the tide is not reset then obviously the dat which can be read in a single I/O operation but the optimizer feels it's expensive because the high tide is not reset to B3
  
  Thank you.

  Not quite, but close. Perhaps a picture would help. For simplicity, I will assume that there is place for one line per block, but the basics are correct.

  If you insert a new table 4 ranks, you'll have something like this:

                     H
                     W
  -----------------------------------
   B1 | B2 | B3 | B4 |    |    |    |
  -----------------------------------
  

  where HW brand the leaves high-water, and the empty blocks on the right are attributed to the table (part of the original measure), but have never been used. If you delete the B1, B2 and B3, you'll have something like this:

                     H
                     W
  -----------------------------------
      |    |    | B4 |    |    |    |
  -----------------------------------
  

  A full table scan, for some reason, all the blocks until the high water mark (i.e. the end of the B4) will read, because Oracle is unclear if there is indeed some lines in the block or not. He knows just that it might be because they are below the high water mark.

  Now, if you insert B5 and B6 you'll get something like:

                     H
                     W
  -----------------------------------
   B5 | B6 |    | B4 |    |    |    |
  -----------------------------------
  

  Since there is space below the high water mark. A full scan will still be read until the end of the B4. Now, if you add more than two lines B7 and B8, you get:

                          H
                          W
  -----------------------------------
   B5 | B6 | B7 | B4 | B8 |    |    |
  -----------------------------------
  

  A row has been added below the high water mark, because there was space but the second was added in a new block and the high water mark was moved at the end last block used, and even if you remove all lines (removal of t) high water will remain in the B8 and a full scan reads all the 5 blocks.

  John

• I make new the old id must paasward wen apple id I go passward, says your id or passward not at even I have received emails but get no email how to find the solution, I, m stuck wat to do

  I make new the old id must paasward wen apple id I go passward, says your id or passward not at even I have received emails but get no email how to find the solution, I, m stuck wat to do

  Have you tried to reset it in security issues? If you are not able to do so, contact Apple support so a security identifier Apple Advisor can help you. 800-275-2273.

• How to find the Web sites of high quality backlinks?

  Original title: how to find quality backlinks?

  Updates on the algorithms research of new google forward a site spammy that build a bad backlinks. But how to find the Web sites of high quality backlinks? Could we must spend a lot of money to get their links?
  Please help me.

  I want to increase backlinks to my site

  Hello

  I recommend you contact Google support for assistance:

  http://support.Google.com/bin/static.py?hl=en&page=portal_groups.cs

  Hope the helps of information.

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  As far as I KNOW, the serial number of the MacBook does not have the serial number of the processor.

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  on system moot bookmark how to find the date of the bookmark?

  In bookmarks menu select organize bookmarks to open the bookmarks library. In the bookmarks library, click views, and then display the columns and then added. This will display a column showing when a bookmark has been added.

• How to find the owners of icloud id?

  IM new to this thing from icloud, I bought 3 old ipads2 on a flea market, where unlocked 2 but we have icloud, the screen is not the old owner alone info [email protected], I don't have a problem, try contacting the owner, but how to find the id of owner? even if is a stolen ipad that I'll be more than returned gad, or ask the owner to remove icloud, but without the owner info is difficult, any advice will be apreciated, thanks

  You can not find it. Go back on the market and claim a refund for the iPad.

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• NB200 - how to find the 3G module for it?

  Hello

  Pls how I find the 3G module in my NB200 - PLL20E?

  Thank you

  Hello

  What do you mean exactly?
  You want to upgrade your NB200 with a card 3G?

  If yes then you must make sure that your NB200 could be improved using this card.
  I'm not sure if this is possible.

  But don t give up boyfriend Toshiba authorized service partner in your country could provide details.
  Guys might be able to tell if this is possible and could provide a good 3G module

  If you get more details please share with us!

  See you soon

• How to find the yahoo flickr Photo password used to download photos from the Photo app?

  I have 151 000 pictures on Flickr that were loaded from Iphoto, then more recently the Apple Photo app on my imac.

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  How to find the password that the Photo is using app?

  You can not extract the code to access from iPhoto or Photo. I could go to the Web of Flickr site and see what password recovery options they offer for your account.

• How to find the webcam on my hp g56122us note windows 7

  How to find the webcam on my computer vision g56122us hp laptop? I can't get my webcam so I can make a video or take a picture. I have no idea how to do so that he could appear on my screen

  Hello
  
  Please use it to check & difficulty:
  
    http://support.HP.com/us-en/document/c02452221     
  
  Links for XP & Vista are here also.
  
  Good luck.

• How to find the velocity of an incremental encoder

  I use the RE22I encoder which can give up to 8192 pulses per revolution, I have A, B, Z reports that I use an fpga as a controller Please help me.

  How to find the speed of the encoder using these signals I'm going to have a clock in the fpga sysytem will help.

  Start by looking at the information on Wikipedia on the rotary encoders and a book on encoders OR white.  These articles will give you a basic understanding of the encoder and the signals it produces.

  With proper decoding, you can get the direction and momentum of each of the points on your encoder 8192.  If the tree can reverse (same vibration on one point unique all-in-mnearly stationary), full decoding must be used.  If data are only of interest while the tree turns in a direction and speed will not close to zero, a simple decoding can be used.  Decoding of a quadrature encoder is a good way to learn to use a state machine.  Signals A and B can exist in only four possible combinations, but the possible transitions to do interesting things.

  Define DECODING is a purely logical exercise and it is a simple coding in LabVIEW, such as a state machine.  There are examples, Desing Patterns, or project templates (depending on your version of LV) that come with LV to help you get started.

  By using the channels A and B you can update your calculation of velocity 8192 times per turn.  With the help of Z you get only an update by the revolution. You use depends on your application.  The pulse of Z is also useful to define a reference position for the measurement of phase angle.

  Lynn