Care & maintenance
How and when to clean disk/does downing loading takes place
Hello
How often depends on how much you use your computer — some do it every day, a few weeks and
much once a month. Most common is generally better if you're on the computer a lot. Yes, low-
load put files and programs on your computer, and they take place. See the space
the tips at the end of this message.
Run DiskCleanup - start - all programs - Accessories - System Tools - Disk Cleanup
You all - leave only check the minidump files if you have had serious failures.
as bluescreens, or blocks - these contain no actual useful data unless the system has been
strange problems.
Good 3rd party free utilities to help:
CCleaner - free
http://www.CCleaner.com/
Forums for CCleaner
http://Forum.Piriform.com/
Wise Disk Cleaner - free
http://free-disk-cleaner.WiseCleaner.com/disk-cleaner.htm
Also check this thread:
Performance and maintenance tips
http://social.answers.Microsoft.com/forums/en-us/w7performance/thread/19e5d6c3-BF07-49ac-a2fa-6718c988f125
===========================================================
These utilities can read the Minidump and another error collection files if you need to see what
in them there.
It is an excellent tool for displaying the blue screen error information
-Free - BlueScreenView scans all your minidump files created during "blue screen of death," collisions
and displays information about all accidents of a table.
http://www.NirSoft.NET/utils/blue_screen_view.html
-------------
MyEventViewer can be verified at the time of the blue screen (BSOD) within a second or so of the
time of the BSOD to provide more information about the possible cause - see TIP)
MyEventViewer - free - a simple alternative in the standard Windows Event Viewer.
TIP - Options - Advanced filter allows you to see a period of time instead of the whole of the record-
Set it for a bit before and after the time of the BSOD.
http://www.NirSoft.NET/utils/my_event_viewer.html
------------
AppCrashView - free - a small utility for Windows Vista and Windows 7 which shows details
application of all accidents occurred in your system. The information breaks down is extracted from the
.WER files created by the Windows Error Reporting (WER) of the operating system component of each
time that an accident has occurred. AppCrashView also allows you to easily record the list of accidents to
text/html/csv/xml file.
http://www.NirSoft.NET/utils/app_crash_view.html
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SPACE
Run DiskCleanup - start - all programs - Accessories - System Tools - Disk Cleanup
You may want to transfer some data, images or documents on removable media like USB keys,
External USB (my choice) or even CD/DVD readers (make multiple copies if the use of these).
-----------------------------------------------------
Info:
System restore usually holds 15% of disk space and updates that are necessary for running computer
consume even more. Backup - Options of recovery and even MS updates and those of HP, Dell
or similar manufacturers use the space if your charging system. There are also overhead for the readers are not
format to their maximum capacity.
Where all my disk space? (Vista) - good writeup
http://Forum.NotebookReview.com/showthread.php?t=167983
Hard disk space Vista shrinking and reducing anomaly
http://www.mydigitallife.info/2007/07/04/Vista-hard-disk-space-shrinking-and-reducing-anomaly/
----------------------------------------------
It will show you how disk space is being used.
WinDirStat - free - use to make sure you know what is too much space.
http://WinDirStat.info/
-Free - TreeSize tells you where precious space has gone to
http://www.Jam-software.com/treesize_free/
Also run Disk Cleanup:
Start - All Programs - Accessories - System Tools - Disk Cleanup.
Use the WinDirStat and these other tools.
DiskMon - free - an application that logs and displays all the activity of the hard disk on a Windows System.
You can also reduce DiskMon in your system tray, where it acts as a disk light, presenting a green
icon when there is disk-read activity and a red icon when there is a writing activity.
http://TechNet.Microsoft.com/en-us/Sysinternals/bb896646.aspx
Process Monitor - free - a monitoring tool for Windows that shows real-time file system,
The process/thread activity and the register.
http://TechNet.Microsoft.com/en-us/Sysinternals/bb896645.aspx
Manage - free - a utility that displays information about the handles opened for any process in the system.
You can use it to see the programs that have an open folder, or to see the types of objects and the names of all
the handles of a program.
http://TechNet.Microsoft.com/en-us/Sysinternals/bb896655.aspx
-Free - Process Explorer shows you information about the handles and DLLs processes have
opened or loaded.
http://TechNet.Microsoft.com/en-us/Sysinternals/bb896653.aspx
Sysinternals - many free tools
http://TechNet.Microsoft.com/en-us/Sysinternals/default.aspx
---------------------------------
OpenedFilesView - Free displays the list of all the open files on your system. For each file opened,
additional information is displayed: handle value, read/write/delete access, position in the file, the
process that has the file open and more...
http://www.NirSoft.NET/utils/opened_files_view.html
I hope this helps.
Rob Brown - MS MVP - Windows Desktop Experience: Bike - Mark Twain said it right.
Tags: Windows
Similar Questions
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Help me problem in Workbench care &; Maintenance superuser
Hi all
I had planned and implemented preventive maintenance programs. Work orders were created. while trying to complete the work. error occurs in the
"Details of the exception.
"oracle.apps.fnd.framework.OAException: java.lang.IndexOutOfBoundsException: index:-1 size: 1".
Please help me solve the problem say.
Thank you
DineshHello
Take a look on the following document.
Note: 779476.1 - Unable to complete work orders for Maintenance WorkBench: java.lang.IndexOutofBoundsException: index:-1 size: 1
https://metalink2.Oracle.com/MetaLink/PLSQL/ml2_documents.showDocument?p_database_id=not&P_ID=779476.1Kind regards
Hussein -
I have a program called automotive service, it shows no source and I can't remove it, I suspect a problem
The only results of a Google search for "Autocare" to bring up links to a legitimate program called Autocare, apparently to have something to do with the car maintenance. Without knowing more about your computer and find out where you see the program what exactly 'impossible to remove that' means (have you uninstall it? it is even installed?), all I can say, is that you perform the fundamental step to ensure that your computer is free of viruses/malware first:
http://www.elephantboycomputers.com/page2.html#Removing_Malware
If you can't do the work yourself (and there is no shame in admitting this isn't your cup of tea), take the machine to a professional computer repair shop (not your local equivalent of BigComputerStore/GeekSquad). If possible, have all your data backed up before taking the machine into a shop. MS - MVP - Elephant Boy computers - don't panic!
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dies black screen and computer
3 months feel like PC all-in-one. When you watch point on Netflix, with sound, the computer just dies and the screen goes black. Could not turn off the computer via the power button / stop and have to unplug. This has happened several times and not always! watching a movie with the sound.
In addition, during the execution of 'car maintenance', the computer screen will be frozen and again having to resort to unplug the machine.
Observations and recommendations would be appreciated. Thank you
To update the drivers on your computer. The drivers do not work well, that's why your computer is not communicating with the hardware parts correctly. You can use RadarSync to drivers to scan and find which need to update. You can use the same software to update the drivers.
David
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In collaboration with Vista Ultimate with the latest service pack. Latency issues become deep after a few years of use. Large number of files have been deleted but the problem persists... specifically to trading Web sites. It has 2 gigabytes of memory, processor clocked at 2.66 Ghz,
Performance Analyzer launched to include the disk read time, writing disk time and time processor. Time processor is a 60 on a scale of 1 and is displayed in. Disc write time is close to zero and disc playback time is not a show. I would like to aim for this tool to help me identify the problem.
Locally, there is no latency with the text in documents word or any window where the text can be placed. Entering text on any Web site, input box is considerably delayed. How can you identify what the problem is. Car maintenance is assured and Antivirus/malware analyses are performed.
Hello
What antivirus/antispyware/security products do you have on the machine? Be one you have NEVER
on this machine, including those you have uninstalled (they leave leftovers behind which can cause
strange problems).----------------------------------------------------
Follow these steps:
Start - type this in the search box-> find COMMAND at the top and RIGHT CLICK – RUN AS ADMIN
Enter this at the command prompt - sfc/scannow
How to analyze the log file entries that the Microsoft Windows Resource Checker (SFC.exe) program
generates in Windows Vista cbs.log
http://support.Microsoft.com/kb/928228Also run CheckDisk, so we cannot exclude as much as possible of the corruption.
How to run the check disk at startup in Vista
http://www.Vistax64.com/tutorials/67612-check-disk-Chkdsk.html==========================================
After the foregoing:
How to troubleshoot a problem by performing a clean boot in Windows Vista
http://support.Microsoft.com/kb/929135
How to troubleshoot performance issues in Windows Vista
http://support.Microsoft.com/kb/950685Optimize the performance of Microsoft Windows Vista
http://support.Microsoft.com/kb/959062
To see everything that is in charge of startup - wait a few minutes with nothing to do - then right-click
Taskbar - the Task Manager process - take a look at stored by - Services - this is a quick way
reference (if you have a small box at the bottom left - show for all users, then check that).How to check and change Vista startup programs
http://www.Vistax64.com/tutorials/79612-startup-programs-enable-disable.htmlA quick check to see that load method 2 is - using MSCONFIG then put a list of
those here.
--------------------------------------------------------------------Tools that should help you:
Process Explorer - free - find out which files, key of registry and other objects processes have opened.
What DLLs they have loaded and more. This exceptionally effective utility will show you even who has
each process.
http://TechNet.Microsoft.com/en-us/Sysinternals/bb896653.aspxAutoruns - free - see what programs are configured to start automatically when you start your system
and you log in. Autoruns also shows you the full list of registry and file locations where applications can
Configure auto-start settings.
http://TechNet.Microsoft.com/en-us/sysinternals/bb963902.aspx
Process Monitor - Free - monitor the system files, registry, process, thread and DLL real-time activity.
http://TechNet.Microsoft.com/en-us/Sysinternals/bb896645.aspxThere are many excellent free tools from Sysinternals
http://TechNet.Microsoft.com/en-us/Sysinternals/default.aspx-Free - WhatsInStartUP this utility displays the list of all applications that are loaded automatically
When Windows starts. For each request, the following information is displayed: Type of startup (registry/Startup folder), Command - Line String, the product name, Version of the file, the name of the company;
Location in the registry or the file system and more. It allows you to easily disable or remove unwanted
a program that runs in your Windows startup.
http://www.NirSoft.NET/utils/what_run_in_startup.htmlThere are many excellent free tools to NirSoft
http://www.NirSoft.NET/utils/index.htmlWindow Watcher - free - do you know what is running on your computer? Maybe not. The window
Watcher says it all, reporting of any window created by running programs, if the window
is visible or not.
http://www.KarenWare.com/PowerTools/ptwinwatch.aspMany excellent free tools and an excellent newsletter at Karenware
http://www.KarenWare.com/===========================================
Vista and Windows 7 updated drivers love then here's how update the most important.
This is my generic how updates of appropriate driver:
This utility, it is easy see which versions are loaded:
-Free - DriverView utility displays the list of all device drivers currently loaded on your system.
For each driver in the list, additional useful information is displayed: load address of the driver,
Description, version, product name, company that created the driver and more.
http://www.NirSoft.NET/utils/DriverView.htmlFor drivers, visit manufacturer of emergency system and of the manufacturer of the device that are the most common.
Control Panel - device - Graphics Manager - note the brand and complete model
your video card - double - tab of the driver - write version information. Now, click on update
Driver (this can do nothing as MS is far behind the certification of drivers) - then right-click.
Uninstall - REBOOT it will refresh the driver stack.Repeat this for network - card (NIC), Wifi network, sound, mouse, and keyboard if 3rd party
with their own software and drivers and all other main drivers that you have.Now in the system manufacturer (Dell, HP, Toshiba as examples) site (in a restaurant), peripheral
Site of the manufacturer (Realtek, Intel, Nvidia, ATI, for example) and get their latest versions. (Look for
BIOS, Chipset and software updates on the site of the manufacturer of the system here.)Download - SAVE - go to where you put them - right click - RUN AD ADMIN - REBOOT after
each installation.Always check in the Device Manager - drivers tab to be sure the version you actually install
presents itself. This is because some restore drivers before the most recent is installed (sound card drivers
in particular that) so to install a driver - reboot - check that it is installed and repeat as
necessary.Repeat to the manufacturers - BTW in the DO NOT RUN THEIR SCANNER device - check
manually by model.Look at the sites of the manufacturer for drivers - and the manufacturer of the device manually.
http://pcsupport.about.com/od/driverssupport/HT/driverdlmfgr.htmHow to install a device driver in Vista Device Manager
http://www.Vistax64.com/tutorials/193584-Device-Manager-install-driver.htmlIf you update the drivers manually, then it's a good idea to disable the facilities of driver under Windows
Updates, that leaves about Windows updates but it will not install the drivers that will be generally
older and cause problems. If updates offers a new driver and then HIDE it (right click on it), then
get new manually if you wish.How to disable automatic driver Installation in Windows Vista - drivers
http://www.AddictiveTips.com/Windows-Tips/how-to-disable-automatic-driver-installation-in-Windows-Vista/
http://TechNet.Microsoft.com/en-us/library/cc730606 (WS.10) .aspx===========================================
Refer to these discussions because many more excellent advice however don't forget to check your antivirus
programs, the main drivers and BIOS update and also solve the problems with the cleanboot method
first.Performance and Maintenance Tips
http://social.answers.Microsoft.com/forums/en-us/w7performance/thread/19e5d6c3-BF07-49ac-a2fa-6718c988f125Explorer Windows stopped working
http://social.answers.Microsoft.com/forums/en-us/w7performance/thread/6ab02526-5071-4DCC-895F-d90202bad8b3Hope these helps.
Rob Brown - MS MVP - Windows Desktop Experience: Bike - Mark Twain said it right.
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I operate Windows 7 system with the latest version of Adobe Reader 11.0.10. I'm reading an old 2008 CD ROM containing a car maintenance manual which is apparently on the Reader Version 7.0.9. I get a message that my system may not work as I have installed 7.0.9 system along with instructions to change for her. When I followed the instructions to do this, the Adobe site stops the procedure and said that he cannot change as I already have the version more up-to-date. Any ideas how to read this CD please?
If disk program has been hard coded way to use a specific version of the player, then you will need to uninstall the version of the player you have, then see if you can get the required version.
Or explore you the disc in Explorer, and if the files are displayed in the form of pdf files, you start your version of the player, then to the breast of the reader find and open the file
Or & maybe better, you post your Q on the Adobe Forums
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Care function battery in HP?
Hello
I run my HP g002ax for several intensive tasks of performance on AC. Are there any other sw HP with the likes of battery care offered by Sony vaio function?
I don't want the battery 100% charged and still connected to the source as is afftect the battery life.
It is a silent since the Sony support site if you are not aware of what battery maintenance fn of sony's.
http://eSupport.Sony.com/Tutorial/572/BR/en/
I the fact manually by going to devc mgr/batteries/second option () / disable. But I find a lil odd and assume that it does not work either. Please help me in this regard.
Thank you.
I just HP AC power control utility. It was already there in the computer. Although he doesn't have the ability to set the threshold, and has limited control options, it does the job for the moment.
Thanks HP! Hope that the sw improves to include other features like adjustable threshold manually at a given time
;-)
-
The bad news is: I recently left my HP Pavilion dv2 Notebook PC to the security of the airports in Europe. The good news is: it was located and returned to me (almost a month later) in the United States.
Of course, along the way, he has not managed with 'tender loving care' I always gave him. He passed through several airports, temporarily, stopping in several departments lost & found... The final package (US Priority Mail with bubbles air, etc.) has been slightly damaged when I received it, even if no internal damage was apparent and the laptop seems to work OK.
This laptop is used rarely; for the most part a few times a year when I travel. I don't want future surprises when I'm away from home without other 'resources '. I feel much more comfortable if I could give him a thorough training in order to ensure that there's no "shaken loose" or something else. Of course, it would not guarantee 100%, but it chill my mind.
Software maintenance/diagnostics monthly, to check all hardware variety, would automatically go on my old HP desktop computer. I can't find something similar on my laptop.
Any recommendations?
Hi @jarhtmd,
Thank you for visiting the HP Forums! A place where you can find solutions for your problems with the help of the community!
I stumbled upon your post on the laptop and wanted to help you! I looked in your question about your HP Pavilion dv2 Notebook and concerns material, here is a link to a Hardware Diagnostic test.
Please let me know how it goes.
You can say thanks for trying to help by clicking on the Thumbs Up below! .
Thank you.
-
Hi all, I have a question about the maintenance of the internal battery. I've seen other people pointing to battery maintenance positions, but unfortunately it comes to removable batteries. Question is, what is the best way to take care of a battery internal? I mainly work in my office with the computer plugged, before, I would remove the battery. Now that the battery is internal, I can't. I leave connect all the time? Or should I disconnect once the battery is fully charged? Thank you!
Callisto,
Batteries have come a certain ways over the years. There should not be no problem leaving the battery connected permanently, there are some features included with the systems now that help keep the battery works to his maximum potential.
-
original title: "kiieyex.exe" added to the files.
Someone had this shortcut path added to the files? All files on my hard drive has become a shortcut, with kiieyex.exe added after the backslash in the car. When you click on it, I get this message: problem with shortcut shortcut, the called has been changed or moved and work more properly. You really want to remove this shortcut? I'm not enough common sense to understand what happened, or what I need to do to access my files... Help!
Hello
Follow these steps:
Step 1: download and run the tool of diagnosis from the link below.
Difficulty of broken desktop shortcuts and common system maintenance tasks
http://support.Microsoft.com/mats/system_maintenance_for_windows/
Step 2: run a scan for viruses on your computer.You can scan the computer using an anti-virus program. You can also analyze your computer online.
Click here: http://www.microsoft.com/security/scanner/en-us/default.aspx
-
After you run the routine maintenance, the conduct of leaves on copy of auto power
I just went to print something and the printer gave me a message that I needed to perform routine maintenance. As soon as I did, I started to have a line in the middle of all the copies that are made using the car power. If I put the paper on the glass, the copy is fine. It's very frustrating because I have a lot of documents to be copied in a short period of time.
Hello! Welcome to the @LeslieMH forums
I understand that you now see a line to the bottom of your copies, and I want to help!
For starters, try a reset of the power and make sure that the printer is plugged directly into the wall, avoiding bars power and surge protectors. This ensures that the printer is full on and can help greatly.
Press the power button to turn the product on.
With the product, unplug the power cord from the back of the product.
Unplug the power cord from the wall outlet.
Wait at least 15 seconds.
Plug the power cord into the wall outlet.
Reconnect the power cord to the back of the product.
If the product does not light by itself, press the Power button to turn it on.Try a copy later and if the continuous line to appear, please let me know what model of printer you have.
Thank you
-
PSU Patching CARS over 2 nights, is it ok?
HelloWe are running 11.2.0.4, node 3 CARS with a physical standby.
Due to the length of our maintenance window, we want to apply the 11.2.0.4.5 psu patch for the eve and node 1, the first night.
Then apply the node2 and node3 PSU and run catbundle.sql the second night.
He will be allowed to run the rac instances and the sleep like that for a day, until we have all the things the second night?
Thank you
I was able to get this done successfully.
I fixed the day before and node 1 the first night (as always my window now allowed)
A ran the cluster and sleep overnight, then this night patched nodes 2 and 3 and ran catbundle.
Everything went well.
-
Turn my vm on after my esxi return of maintenance mode
Hello
I create a script to restore config network ESXI. My problem is that I'm missing the order lines that will make my VM on the host to detect that the host is out of the 'maintenance mode' and they will start their car.
Kind regards
Michel v
You have a vCenter?
If so, these virtual machines are not started on another node of ESXi through HA?
With the help of an alarm would be an option?
-
best practices for maintenance - are my not right?
OS: Linux
DB: 11 GR 2, RAC nodes two primary, standby CARS two nodes
We just had an interview, I manually stop backup site (delayed primary log_archive_dest_2_stat), stop crs. However, I have concerns:
(1) when I stop the two nodes crs, have still one last thing left I can't stop - init.ohasd run:
CRS-2793: stop of the resources managed by Oracle high availability Services on 'qaoracle01' made
CRS-4133: Oracle high availability Services was arrested.
[root] # ps - ef | grep d.bin
root of 16841 16394 0 03:35 pts/0 00:00:00 grep d.bin
[root] # ps - ef | grep has
11411 1 root 0 Aug07? 00:00:00 / bin/sh /etc/init.d/init.ohasd run
root 16846 16394 0 03:35 pts/0 00:00:00 grep has
How to stop this service? Or is it ok to leave for the maintenance of the server that requires restarting the server? Since Oracle documents said only use: crsctl stop crs, I think that it's ok to drop everything.
(2) in order to automate this type of maintenance in the future, can I intergrate dbshutdown in init s/n have not involved in the maintenance of the server?
What is the right steps?
Thanks in advance.Yes, I should have.
Generally, I find these things pretty fast. The fact I'm here makes it almost empty, that we wonder to this topic. That said, here's what I found:
Automate the starting and stopping of Oracle Real Application Clusters database Instances
http://docs.Oracle.com/CD/E19396-01/817-6570/opsrac-Admin-ex-79/index.html
And this:
http://www.Oracle-home.ro/Oracle_Database/RAC/shut-down-stop-Oracle-Clusterware.html
Best regards
mseberg
-
ENQ: TX - index for cars running
Hi all
The system configuration is node 2 11 GR 2 cars used by 11.5.10.2 application ERP on RHEL 5
Face claim to index to insert it on the big table with 27 million.
We have solved this after purging of data to reduce the lines to 4 million and rebuild the index.
I was against the approach to keep mind that the tree index B are self balanced do not rebuold
I have presentation Joel and JLewis comments on this wait event
QuestionsIndex stats before purge : SQL> select NAME,HEIGHT,BLOCKS,LF_ROWS,LF_BLKS ,LF_BLK_LEN,BR_BLKS,DISTI NCT_KEYS ,BTREE_SPACE,USED_SPACE ,PCT_USED from index_stats; NAME HEIGHT BLOCKS LF_ROWS LF_BLKS LF_BLK_LEN BR_BLKS DISTINCT_KEYS BTREE_SPACE USED_SPACE PCT_USED ------------------------------ ---------- ---------- ---------- ---------- ---------- ---------- ------------- ----------- ---------- ---------- OE_PROCESSING_MSGS_TL_U1 3 151040 27108882 149878 4276 422 27108882 644266144 516301179 81 Index stats After purge : SQL> select NAME,HEIGHT,BLOCKS,LF_ROWS,LF_BLKS ,LF_BLK_LEN,BR_BLKS,DISTINCT_KEYS ,BTREE_SPACE,USED_SPACE ,PCT_USED from index_stats; NAME HEIGHT BLOCKS LF_ROWS LF_BLKS LF_BLK_LEN BR_BLKS DISTINCT_KEYS BTREE_SPACE USED_SPACE PCT_USED ------------------------------ ---------- ---------- ---------- ---------- ---------- ---------- ------------- ----------- ---------- ---------- OE_PROCESSING_MSGS_TL_U1 3 14816 4763902 14556 5644 34 4763902 82618912 90654959 110 ASH data before data purge ----------------------- Top User Events DB/Inst: PROD/PROD1 (Apr 04 12:00 to 13:00) Avg Active Event Event Class % Event Sessions ----------------------------------- --------------- ---------- ---------- db file sequential read User I/O 32.36 9.69 read by other session User I/O 19.43 5.82 enq: TX - index contention Concurrency 11.29 3.38 enq: TX - row lock contention Application 10.78 3.23 CPU + Wait for CPU CPU 7.32 2.19 ------------------------------------------------------------- Top Service/Module DB/Inst: PROD/PROD1 (Apr 04 12:00 to 13:00) Service Module % Activity Action % Action -------------- ------------------------ ---------- ------------------ ---------- PROD NPIWIPLR 23.90 Concurrent Request 23.90 OMRSVORD 9.44 Concurrent Request 9.44 NPIIMGION 8.65 Concurrent Request 8.65 OEOIMP 4.53 Concurrent Request 4.53 OEXOEORD 3.83 FRM:B82562:NPI Cus 1.09 ------------------------------------------------------------- Top User Events DB/Inst: PROD/PROD2 (Apr 04 12:00 to 13:00) Avg Active Event Event Class % Event Sessions ----------------------------------- --------------- ---------- ---------- db file sequential read User I/O 30.41 5.62 CPU + Wait for CPU CPU 22.40 4.14 enq: TX - row lock contention Application 13.71 2.53 enq: TX - index contention Concurrency 8.24 1.52 read by other session User I/O 7.80 1.44 ------------------------------------------------------------- Service Module % Activity Action % Action -------------- ------------------------ ---------- ------------------ ---------- PROD NPIWIPLR 10.21 Concurrent Request 10.21 OEXOIMPT 9.60 FRM:B60221:NPI Cus 4.31 FRM:N11217:NPI Cus 2.75 FRM:N13737:NPI Ord 2.54 OEXOEORD 8.78 FRM:N11247:NPI Cus 3.80 FRM:C35809:NPI Cus 1.34 FRM:N11218:NPI Cus 1.20 NPIIMGION 6.67 Concurrent Request 6.67 NPISLIM 5.41 Concurrent Request 5.41 -------------------------------------------------------------
(1) even if it seems he does not index unique sequence but the claim is there?
(2) after reconstruction, we see pct_used > 110, what will happen?
(3) prior use was 81 per cent, is higher and would lead to node splits for large indsddexes?
Concerning
KGKG says:
Face claim to index to insert it on the big table with 27 million.
We have solved this after purging of data to reduce the lines to 4 million and rebuild the index.
I was against the approach to keep mind that the tree index B are self balanced do not rebuoldFirst point to note - if you delete M 23 rows in a table with 27 million lines, it is probably a good idea to rebuild the table and the index to recover the space empty, unless you wait another 20 million lines to be arriviing soon and re-use of space very soon. In fact, you can use the dbms_redefinition package to extract the data you want to keep rather than a deletion. Alternatively you could actually marked as unused as an index on the table that you can get away with before to delete data and (optionally) make an area of narrowing.
>
Index before you purge statistics:
SQL> select NAME,HEIGHT,BLOCKS,LF_ROWS,LF_BLKS ,LF_BLK_LEN,BR_BLKS,DISTI NCT_KEYS ,BTREE_SPACE,USED_SPACE ,PCT_USED from index_stats; NAME HEIGHT BLOCKS LF_ROWS LF_BLKS LF_BLK_LEN BR_BLKS DISTINCT_KEYS BTREE_SPACE USED_SPACE PCT_USED ------------------------------ ---------- ---------- ---------- ---------- ---------- ---------- ------------- ----------- ---------- ---------- OE_PROCESSING_MSGS_TL_U1 3 151040 27108882 149878 4276 422 27108882 644266144 516301179 81 Index stats After purge : SQL> select NAME,HEIGHT,BLOCKS,LF_ROWS,LF_BLKS ,LF_BLK_LEN,BR_BLKS,DISTINCT_KEYS ,BTREE_SPACE,USED_SPACE ,PCT_USED from index_stats; NAME HEIGHT BLOCKS LF_ROWS LF_BLKS LF_BLK_LEN BR_BLKS DISTINCT_KEYS BTREE_SPACE USED_SPACE PCT_USED ------------------------------ ---------- ---------- ---------- ---------- ---------- ---------- ------------- ----------- ---------- ---------- OE_PROCESSING_MSGS_TL_U1 3 14816 4763902 14556 5644 34 4763902 82618912 90654959 110
(1) even if it seems he does not index unique sequence but the claim is there?
(2) after reconstruction, we see pct_used > 110, what will happen?
(3) prior use was 81%, it is higher and would lead to node splits large index?One of the comments in one of the blogs I wrote on the index highlights a key problem: http://jonathanlewis.wordpress.com/2009/07/20/index-quiz-1/#comment-33897
Note the LF_BLK_LEN in both cases: it is well below the 8000 bytes you get in general for an index btree, built in a block size of 8 KB. This is because the ITL list in some of the blocks sheet has grown to manage concurrent changes to the blocks, and the command ANALYZE took the biggest list ITL as typical of ALL blocks in the index. 110% and 81% are a side effect of this as Oracle took the used_space and the number of lf_blks * lf_blk_len to calculate the percenage: for example 90654959 / (5644 * 14556) = 1.1035You have created the index with a very large INITRANS, either a number of pads of sheets have already been under pressure concurrent insert and hit the "ITL Explosion" bug, losing a lot of inputs ITL which can not be recovered without some sort of index maintenance.
You said that the index is not based on a sequence - but is it based on some form of monotonous increasing value (for example, a timestamp), you don't need a sequence to hit the problem you just need values that continue to increase. The problem is the number of basis 8767925 bug, fixed in paragraph 12.1 with backports available for some versions.
Concerning
Jonathan Lewis
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