hot flashes control point transaction log

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• What are the 'additional Control Point', 'current log tail' and RBA

  I myself messgae in the alert log file

  Incremental checkpoint up to RBA [0xe.58bfe.0], current log tail at RBA [

  In reading articles on Oracle and the Oracle documents, I have also come across these three terms much

  Incremental checkpoint
  current log tail 
  RBA

  I really want to know what they are in a short and clean definition. Lengthy discussions are devoted to "Incremental Checkpoint" in the url

  Incremental Checkpoint
  http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:19311485023372

  But I got confused.

  There are many different types of control point - the thing they have in common is that they require the database writer to write disk blocks (see the last part of this post: http://jonathanlewis.wordpress.com/2007/04/12/log-file-switch/).

  The "additional control point" is simply the name given to the event of control point which is scheduled to occur every three seconds and allows dbwr to write of disk blocks that have first changed more than a certain distance in the past.

  In this context, RBA means 'redo the address bytes' (address of block redo only sometimes) identify a location to a redo log file.
  The 'end of the newspaper' is the latest ARI redo entry written in the restore log file growth.

  In a control post additional dbwr derives a value for a Resource that represents a previous point in time and written on the disk of the data blocks that have been changed by generated redo before RBA and have not been written to disk since this change.

  Depending on the configuration of your settings file the previous RBA may be derived in a time lag, a volume of roll forward or the number of blocks of data that have to be modified for the IRA at the end of the paper (actually).

  Concerning
  Jonathan Lewis
  http://jonathanlewis.WordPress.com
  http://www.jlcomp.demon.co.UK

  Published by: Jonathan Lewis on June 27, 2011 23:15
  Improved the writing and editing of a fault.

• Redo log switch always calls the control point?

  Hello

  Is a log switch redo always calls process checkpoint?

  I have a database of test on which nothing is not running, but when I switch the redo log file, so it takes time to make the State of redo log active to INACTIVE.

  But when I change check system; the State immediately changes from ACTIVE to INACTIVE.

  Gives me a feeling that the redo log switch, it is not mandatory for the checkpoint occurs.

  DB version is 11.2.0.1

  Comment of nicely.

  A 11.2.0.4 alert after log is 3 'alter system switch logfile' in a line:

  ALTER SYSTEM SET log_checkpoints_to_alert = TRUE SCOPE = BOTH;

  Wed Apr 16 22:17:09 2014

  Beginning log switch checkpoint up to RBA [0xd8.2.10], SNA: 12670277595657 *.

  Thread 1 Advanced to save the 216 (switch LGWR) sequence

  Currently Journal # 3 seq # 216 mem # 0: /u01/app/oracle/oradata/TEST/onlinelog/o1_mf_3_938s43lb_.log

  Currently Journal # 3 seq # 216 mem # 1: /u01/app/oracle/fast_recovery_area/TEST/onlinelog/o1_mf_3_938s49xz_.log

  Wed Apr 16 22:17:25 2014

  Beginning log switch checkpoint up to RBA [0xd9.2.10], SNA: 12670277595726 *.

  Thread 1 Advanced to record the sequence 217 (switch LGWR)

  Currently journal # 1, seq # 217 mem # 0: /u01/app/oracle/oradata/TEST/onlinelog/o1_mf_1_938s3lbv_.log

  Currently journal # 1, seq # 217 mem # 1: /u01/app/oracle/fast_recovery_area/TEST/onlinelog/o1_mf_1_938s3nmc_.log

  Wed Apr 16 22:17:36 2014

  Thread 1 cannot allot of new newspapers, sequence 218

  Checkpoint is not complete

  Currently journal # 1, seq # 217 mem # 0: /u01/app/oracle/oradata/TEST/onlinelog/o1_mf_1_938s3lbv_.log

  Currently journal # 1, seq # 217 mem # 1: /u01/app/oracle/fast_recovery_area/TEST/onlinelog/o1_mf_1_938s3nmc_.log

  Wed Apr 16 22:17:40 2014

  Checkpoint completed up to [0xd8.2.10], YVERT RBA: 12670277595657 +++

  Beginning log switch checkpoint up to RBA [0xda.2.10], SNA: 12670277596242 *.

  Thread 1 Advanced to record the sequence of 218 (switch LGWR)

  Notice how we have lines (marked *) what does "beginning log switch checkpoint."

  However, note that control points are not "emergency" until we have a problem with "checkpoint is not complete", and the first control point in the bucket fill in only some time after the second control point in the dumpster.  Log switch checkpoint he still 'place' (or, at least, its necessity is noticed) - but it is not the urgent case where it used to be in early versions of Oracle.

  Concerning

  Jonathan Lewis

• Concepts of control points

  While trying to understand the concepts of control points, I stumbled on the following
  
  "
  TimesTen keeps two files of control point for each database, named
  DataStoreName.ds0 and DataStoreName.ds1. * When a data store is controlled
  on the disc, TimesTen replaces the older of the two files.* checkpoint
  * Only data that has changed since the last checkpoint operation is rewritten in
  the checkpoint file *. The checkpoint operation scans the data store for blocks that
  have changed since the last checkpoint.
  
  "
  
  I have the following queries
  
  (1) I thought initially that TTdb manages 2 copies of the same data, so that if a single file becomes corrupt other can be used when recovering - but after reading the above, I believe that it is not so
  
  (2) the first statement says two CP files older than th is crushed and then immediately the explanations that says only the changed blocks is wirtten to the CP file... I'm very confused now... What recovery will happen in this case, what happens to the existing data?
  
  Pleas explain the above concepts

  The description is poorly written. Each control point image is a complete database image, but they are not the same (since we're still 'new' than the other). When a checkpoint occurs, he writes in the oldest checkpoint file. It does not crush it but rather updates "in place" (by a combination of lseek() and write() operations) to put it in sync with the current state of the database in memory.

  Control points are "blurred", because they do not block queries or operations; so the image of control point isn't 100% of internal consistency, but this is solved using the transaction, as part of the recovery logs, to standardize the reloaded database. A clean shutdown a special type of control (a static checkpoint) is taken, and this image is consistent.

  Chris

• Ground control point and of the CNS by using process DBWr and LOGWr?

  What control point has to do with the log writer process I don't get exactly?...
  
  As I fire 1 query updated and apparently it will generate some redo blocks which in turn will come to my redo log files now in this cycle where the control point will occur and why?
  
  (1) my update query
  (2) lock
  (3) generate redo
  (4) generate cancel
  5 blocks) are changed, but they are still in the redo log buffer...
  
  Now this block finally comes to redo logs in all this way to check off pointing place and why?
  
  control point takes place also however is flushed to the data files the same reason why?
  
  Same manner around the same question the checkpointing should do with the DBWr process as I'm unclear...
  
  -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
  Apart from this overview of the SNA is generated when the user launches period... and we can say YVERT can be used to identify whether or not the transaction is validated. ?
  So what is the reason for the SNA update in the control file... Can b to get the last transaction committed... ??
  
  Sorry a thread with questions so much... but this all things create a blurry image, I want to clearly say thnx for your help in advance...
  I've read the documentation, but they did not mention deep for recovery... ??
  
  
  
  Thank you
  Philippe
  
  Published by: 851733 on April 12, 2011 07:57

  And you the chance to read the guide to the Concepts and the book, Expert, alone that I proposed to read? I guess no, no? You mean, you have to read two books for sure because it would take a lot of time before you would get things correctly.

  YVERT is a like a timestamp which oracle maintain separate trasactions of time?

  Evil. CPN is with each operation, whether a DML, select, DDL, whatever it is. It's time, that's all. Validation of a transaction would be just another event that will be mapped to the SCN generated right here.

  Checkpoint is a SNA during which we emptied all Sales buffers to disk?

  Have you read in my last response I mentioned CPN is to read-consitancy and checkpoint is for the recvoery? So, how you said that this point of control is nothing other than RCS? See the definition of the Concepts guide,

  A data structure that marks the position of the control point, which is the RCS in the thread again where instance recovery should begin. Control points are recorded in the control file and each file header data and are a crucial part of the recovery.

  So assuming that the roll forward flow is as below,

  Begin - Checkpoint - end

  The point where the word Checkpoint is mentioned, is the place where begins the recovery.

  Control files and headers of the data files are updated with the last control point (now this checkpoint is the last SNA by what buffer cache is empty so that we can know up to what our data files are updated).

  Read the above, given the definition of the control point.

  Buffers are marked with YVERT?

  Don't know what you mean by this statement?

  Tell you what, read the guide concepts and Experts, by Tom Kyte to understand these things in a way much better. Besides, if you can organize, attend the session for workshop-1 or 2 modules of Oracle University, where the instructor would release these questions into a long discussion, very strongly suggested that with the above mentioned books.

  Aman...

• The system failed to flush the data in the transaction log. Corruption may occur.

  I started to do a Blizzard of these warnings in my system error log.  I want to eliminate them.  Does anyone know how?  Where exactly is this "transaction log"?  The warnings are an event ID 57.  Enjoy a preview.

  Thank you.

  H

  .. just to rule out something:

  You plug and/or remove an external hard drive on this system (or a USB flash drive)?  Generally, this error occurs when you "surprise remove" year external hard drive which means having disconnected without disconnecting safely system properties.

• Confused about "additional control Points.

  Hello

  I'm confused about this sentence from database Concepts 11g Release 2 (11.2)

  Additional control points

  An additional control point is a type of thread control point in part intended to avoid writing a large number of blocks online redo log switches. DBWn checks at least every three seconds to determine if he has to do. When DBWn written stamps Sales, it advances the position of the control point, causing CKPT write the position of the control point to the file control, but not for data file headers.

  I thought that a checkpoint is written datafileheader and controlfile, this happens for example after a switch logfile - right?

  So, why not in the case of additional control point? For best performance?

  Additional control points to reduce the time to recover, as more data is committed to the files of data, right?

  Concerning
  Christian

  efa78257-b5f4-4db1-8222-007be18d15aa wrote:

  Hello

  I'm confused about this sentence from database Concepts 11g Release 2 (11.2)

  Additional control points

  An additional control point is a type of thread control point in part intended to avoid writing a large number of blocks online redo log switches. DBWn checks at least every three seconds to determine if he has to do. When DBWn writes buffers of Sales, it advances the position of the control point, causing CKPT write the position of the control point to the file control, but not for data file headers.

  I thought that a checkpoint is written datafileheader and controlfile, this happens for example after a switch logfile - right?

  So, why not in the case of additional control point? For best performance?

  Additional control points to reduce the time to recover, as more data is committed to the files of data, right?

  Concerning
  Christian

  There are many types of control points. One that will be updated on the headers of data files would be a complete control and would be applicable to the entire base. The additional control point is induced to keep on enhanching a counter that would ensure that only certain limited stamp Sales would be recovering. That's why a moment of the additional control point, data file headers are not being updated. Control file is probably updated with a "pointer to disk" which mentions the point up to which the dirty buffers are written in files (from the buffer cache) data and where to start the recovery, if necessary. Log file switch will cause a thread control point which, for one instance, would be considered a Global checkpoint only. The additional control point would be for various other reasons such as setting a value for the parameter Fast_Start_Mttr_Target etc.

  HTH

  Aman...

• The addition of swf (Captivate clips) in RoboHelp: flash controls do not work

  Hi all

  I added captivate swf project and ALL the flash controls (toc, play etc) do not work, although it plays continuously from the beginning. If I extracted this page of HTML and read it separately, it works on all browsers. I do like MS HTML Help RoboHelp projects.

  Are there any known problems with the rendering of flash elements in Microsoft HTML Help? It seems that it uses a weird built-in browser to swf.

  any suggestions?

  Thank you

  Hi again

  Well, this becomes curious and curioser more I look at it.

  At first glance, it appeared things were working. Then I tried the playback controls. Weird, the controls will allow one simple click and they will perform any function you have clicked. But it seems to be. Extra clicks seem to be refused. I tested with a cool Captivate movie and one that uses the Lock Widget area.

  I was wondering if it was a general problem with SWF content in general or if it was simply linked to the playback controls, I tried and then add objects button to each slide to allow the user to navigate from slide to slide. It seems to work.

  I thought (hope actually) perhaps it was simply the default playback at the source of the problem controls. Unfortunately it seems not to be. I tried to create a SWF file by using the controls of the aluminum. Same question.

  At this point, I have to admit that I'm more than a little perplexed. I'm surprised that I have not heard of this before, or that others have not reported. However, I use the Captivate files in my CHM files all the time. The main difference is that I never use the playback controls in my films. I always use buttons or click on the boxes to navigate.

  Therefore be generally dissatisfied and poking it in addition, I seem to have found the culprit. I did the same thing in RoboHelp 7 and it wasn't a problem. What was different? I scanned the code and there is no difference. Hmmm

  Then it hit me. The difference here is that when the Captivate playback control worked only after the first click, the RoboHelp project use to browse sequences. So, I edited the definition of the window and turned them off. BINGO! The Captivate now works correctly.

  I also tested using RoboHelp 7. Same question here as well.

  Certainly, this should be reported to Adobe as a bug. Link is in my SIG.

  See you soon... Rick

  Useful and practical links Wish to RoboHelp form/Bug report form Begin to learn RoboHelp HTML 7 or 8 days - $24.95! Adobe Certified RoboHelp HTML Training SorcerStone blog RoboHelp EBooks

• "physical, no written control point" is low, but increase in roll forward does not help.

  We have a busy database, the physical write is so high that we want to reduce the physical writing. The statspack, we could see "physical writes non checkpoint" is low in comparison with 'physical writing', so I think the physical write results from control point is high, then I increased the size of Redo from 2 G to 4 G (now the command to log every 4 minutes). I hope that this may reduce the physical writing, but the fact is that the roll increased forward is powerless.

  Statistic                                      Total     per Second    per Trans
  --------------------------------- ------------------ -------------- ------------
  physical writes                            8,298,681        9,210.5        249.8
  physical writes non checkpoint             3,229,321        3,584.2         97.2

  We use the oracle 10.2.0.3 on solaris 10, checkpoint-related parameters are

  fast_start_io_target                          0                  
  fast_start_mttr_target                        0                  
  log_checkpoint_interval                       5000000            
  log_checkpoint_timeout                        0     

  Thank you
  
  Published by: user646745 on August 18, 2009 01:24

  FAST_START_MTTR_TARGET is set to 0

  Make sure that you explicitly defined FAST_START_MTTR_TARGET on 0.
  If you have not set it, a "show"parameter will be enabled see the value 0, but the automatic setting of the control point will be . (See Note MetaLink #265831.1)

  If the size of redo is 4G, we will have two control points for each 4G...

  Yes, there will be one for the log_checkpoint_interval and the other for the control of log file.

• Hot flashes recorded more open in FireFox

  I saved the flashes such as animations and even games on my computer so that I could enjoy always, online and offline. But recently I can't open any of them, I just need me to the home page and when I try to download, it's so instantly instead of the brief 15 seconds it takes normally and does not always open. Hot flashes work very well on the sites, and it opens in Internet Explorer. I clear my history so I wonder if I did something for the cookies.

  If you have the links to what you have, try to make new links.

• When I try to access the windows Defender it says operation has been cancelled due to restrictions in effect on this computor. I think I uninstalled the control point

  I went to the windows Defender to change visual effects to take into account what was best for the performance. Now when I try to access windows Defender it says this operation has been cancelled due to restrictions in effect on this computer. Contact the system administrator. I tried to do a system restore, and looks that I uninstalled windows defender control point. What should I do

  Hello gailhorne,

  Do you have any antivirus software installed?  Please visit the link below and let us know the status.

  running windows Defender but receive error message that this operation has been cancelled the restrictions in effect on this computer

  http://answers.Microsoft.com/en-us/protect/Forum/protect_scanning/trying-to-run-Windows-Defender-but-get-error/6969e099-6c42-47B5-ADC5-18804bce3cb6

• Control point

  I get a message asking if point of security control may make changes to the boot hard disk. As I don't use it I want to uninstall it, but can't find it in any list of program. Any help appreciated

  Hello Spindlewoody,

  You don't list what operating system you are using, so the steps may very

  1. click on start or the ORB start

  2. click in the search box or the execution option

  3. type msconfig

  4. Select the application in the list or click ok

  5. Select the Startup tab

  6. check if the security control point is listed if it is uncheck and reboot your computer

• (Dell Latitude E6400) Windows 7 64 bit Dell control point

  I installed Windows 7 64 bit on my Latitude E6400. I can't find any way to install the Dell Control Point. I got the Pack of drivers to install. I found a single download of the Security Manager who has worked, but I would like to than the power one Manager.

  I looked on this forum a few times and all the links I click redirect just me at the page downloads and drivers. I get an error saying that my service pack is not supported... I'm on Windows 7 Service Pack 1. I have also some 32-bit errors, but it's my fault to have downloaded the 32 bit version.

  Someone has a link to the full package of checkpoint Dell (Power Manager, Manager of connections, Security Manager) that works on Windows 7 64 bit?

  Thank you

  -Ryan

  parrotrpg1

  Here is a good article on reimage the Latitude E6400

  downloads.dell.com/.../Latitude%20E-Family%20%20Mobile%20Precision%20Re-Image%20How-To%20Guide%20-%20A03%20Rev%203%200.pdf

  Win 7 Control Point System Manager files are a little hard to find, but they can be downloaded from the following link.

  www.dell.com/.../DriverFileFormats

  This will help you if you have installed the drivers in the correct order.

  TB

• Cisco Multicast - problem of Cluster control point

  Hi all

  Now I've been troubleshooting an issue where in my security team in which they are unable to form a cluster with two devices of control point. (internal interfaces E1 on both).

  They told me that the cluster Protocol (CCP) uses multicast to form a cluster.

  Two internal interfaces are connected to my core of the switches (FEX) which are two Nexus 5Ks, which I think has some limitations regarding multicast transmissions (Please correct me if I'm wrong)

  From the online support literarure, I learned to know that disable the IGMP snooping on the switch Cisco Nexus Core is a workaround.

  My query is, is there any special way from PRI? If I disable the IGMP snooping it will affect all other areas of my network?

  Thanks in advance.

  I prefer to use IGMP snooping as planned, i.e. with an IGMP applicant if there is no Layer 3 interfaces with PIM.

• Control point for endpoint connect is compatible with Windows 8.1?

  Original title: CheckPoint endpoint connect

  Hello

  I'll do the upgrade of Windows 8 Pro for Windows Pro 8.1.

  By choosing the upgrade path that allows me to keep all the files, settings and applications, it shows that the only application that I have to uninstall will be Checkpoint Endpoint Connect (which currently runs under Windows 8 Pro).

  At all known installation CheckPoint EndPoint Connect on Windows Pro 8.1 and installed successfully?

  Thanks for the reply.

  I've went ahead with the installation of Windows RTM 8.1 and took the risk that Checkpoint would not be compatible.

  I was able to uninstall Checkpoint, as part of the upgrade of Windows 8.1 window and subsequently install Checkpoint endpoint connect successfully.

  Therefore, I am happy to say that for our Organization and our version of the control point, it is looking like it is fully compatible with Windows 8.1.