It's a very tough partitioning work?

Hi every one,
The application is special. I want to partition a few of very large tables. But I can not devise a perfect solution. t's a very tough partitioning work!
More than 3MB of data is inserted into the table MESSAGE per second repeatedly. The data inserted into MESSAGE table per hour is more than 10GB. Some data in the MESSAGE table is processed and inserted into other tables. One hour later after inserting, the data is seldom be accessed and no any more DML on it.
I want to partition the table MESSAGE. Because only the data within one hour is required to be kept, I think it is better to backup and drop the old partitions or just keep them read-only.
Now the problem is if I partition the table by DATE (time) column, all the operations is concentrated on one partition---current partition and segments of current partition table and its index become the hot segment. The performance may be damaged.
It is impossible to partition the table by HASH because it is not easy to delete the outdated data.
What is your opinions?
Thank you

jetq wrote:
1. Can I partition (subpartition) the tables by a changeable column?
Arup Nanda states that it possible to partition (subpartition) the tables by a changeable column. But I don't know how to do it.Sure. When you're partitioning a table, Oracle has no idea whether the column you are partitioning on is mutable or immutable. There are no differences in how you define a partitioned table where the partitioning key is mutable other than the fact that you have to enable row movement.
2. Does the row movement in between partitions consume a lot of resources?Depends on your definition of "a lot". An UPDATE that causes a row to move from partition A to partition B is roughly equivalent to deleting the row from partition A and inserting it into partition B. That is obviously more expensive than a simple update. Whether that constitutes "a lot of resources" depends on your definition of "a lot" as well as factors like how frequently you want to cause rows to move between partitions.
Justin

Similar Messages

TWO VERY TOUGH SUPPORT PROBLEMS FACED AND SOLVED IN REAL TIME

pls any body post two very tough support problems faced and solved in real time.
my id is: [email protected]

Hi Priya.,
For example client wants his customer legacy number in XD01 master data which is not there in Standard SAP.we can satisfy the requirement with USER EXIT
2) If the client wants customer Phone number in the sales order we can use user exit to satify the requirement
These are not provided in Standard SAP & we should work out on alternative way
REWARD if helpfull
Thanks & Regards
Narayana

Hello , Recently my company purchased a Fujifilm X30 . We were surprised that Adobe has not updated the plug in for this camera. Since we are your customers, we would like to know, when they will perform this update ? For us it is very important to work w

Hello , Recently my company purchased a Fujifilm X30 . We were surprised that Adobe has not updated the plug in for this camera. Since we are your customers, we would like to know, when they will perform this update ? For us it is very important to work with all our tools work quickly and efficiently, I guess I understand.
We await your response .
Thank you very much .

This is a user to user forum with "some" Adobe staff participation, make requests at this link
https://www.adobe.com/cfusion/mmform/index.cfm?name=wishform

To andy,scott thank you very much,it works now,Ahmed

to andy,scott thank you very much,it works now

Hello,
This is the second "only thanks" thread I see today (a new trend?). At least add a link to your original thread, so we all can understand the problem you faced, and appreciate the help you were given.
Regards,
Arie.

After the update of the operating system to OS X Mavericks my macbook retina became very slowly to work

After the update of the operating system to OS X Mavericks my macbook retina became very slowly to work, a response at the programs is very long (5 - 10 seconds). I work yet with the connected external monitor of NEC. Problems are very noticeable in transition of cursor from one monitor on other - very often a cursor stops beating on 5-10 seconds. The complete new setting of the system did not help.

After the update of the operating system to OS X Mavericks my macbook retina became very slowly to work, a response at the programs is very long (5 - 10 seconds). I work yet with the connected external monitor of NEC. Problems are very noticeable in transition of cursor from one monitor on other - very often a cursor stops beating on 5-10 seconds. The complete new setting of the system did not help.

I am just starting out in graphic design and I wanted to know how to get more involved with either adobe and or graphic design? I am really very interested in working with adobe and graphic design more and becoming more involved with both!!

I am just starting out in graphic design and I wanted to know how to get more involved with either adobe and or graphic design? I am really very interested in working with adobe and graphic design more and becoming more involved with both!!

I have now recently downloaded 10.0.2 which is confusing in itself, as, as far as I can ascertain that is actually version 11, but I'm not even sure about that.
Version 10.0.2 is the newest version and the successor to GarageBand '11 (version 6.0.5).
The '11 is referring to the iLife '11 suit of multimedia application - the older GarageBand was a part of this bundle.
Have a look at Edgar's graphical enhanced manuals, the explain very detailed how things work and why. You can buy them as iBooks from the iBook store or directly from the page:
http://DingDingMusic.com/Manuals/

InDesign CC 2014 is very very slow when working with a table.

InDesign CC 2014 is very very slow when working with a table. Every 1/2 - 1 hour it nearly falls back, impossible to work with. While this project must be finshed quite soon..
What the hell is the matter with this Creative Cloud. I havea very fast iMac form 2014. I closed all other programmes, even cannot listen to music now. More people with this problem??
Martien

@Martien – How complex is your table?
How many cells? Merged ones as well?
Complex formatting of texts inside the cells?
Complex formatting rules of table rows and/or columns?
Many images inserted?
If yes, and the table is running through many text frames of many pages, I fear, you can do nothing against slowness.
Nothing but: Greek text, not showing the page contents in the Pages Panel, in short: anything you can do to get better performance in redrawing of the screen.
If you have the chance to break up one big table in several parts, do that and edit its parts one after another isolated. Pehaps in different documents.
Then merge the parts in one table, if you want to flow it from page to page.
Uwe

When I execute a download file (skype download, for example) a message appears saying internet connection isn´t available, even tough it work properly

when I execute a download file (skype download, for example) a message appears saying internet connection isn´t available, even tough it work properly

I'm having the same problem with this, only it happens with all add ons. I get error -228 when I try, every time.
I can't install through the add-on manager, from the add on site, or by saving the link on the site. I've tried downloading it in Firefox, Chrome, and IE to no avail.
I can, however, drag existing .xpi files into the add on manager and they will install just fine.
I've looked through all the available other documentation, including the two links suggested by TXGuy above and none of it has helped.

Safari very often stops working.

Safari very often stops working. I have tried to clear the history and coockies and powered off. Then Safari works on s few pages and stops again. I have checked the network by doing exactly the same things on another ipad, and that works fine. Any suggestions?

When you say that it stops working, I assume that you mean the app crashes and takes you back to the home screen. Close all of the apps in the recents tray on the iPad, clear Safar again (delete the cookies and data) reboot the iPad and then see if Safari behaves a little better.
Tap the home button once. Then tap the home button twice and the recents tray will appear at the bottom of the screen. Tap and hold down on any app icon until it begins to wiggle. Tap the minus sign in the upper left corner of the app that you want to close. Tap the home button twice.
Go to Settings>Safari>Cookies and Data. Now reboot the iPad by holding down on the sleep and home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider if it appears on the screen - let go of the buttons. Let the iPad start up.

MacBook Pro Won't Boot. Kernel Panic. Only Windows Partition Works

So one day I was using my mac when it froze for no apparent reason, i was just running iTunes, so i held the power key and it shut down. After a while, i turned it back on and it got to the apple but then i got a bunch of errors i guess, around the lines of kernel panic. So i went online and read other peoples problems but none of them seamed to work. It wont start up normally, not in safe mode, recovery drive wont boot, only the windows partition works. i reset my PRAM i think its called and that failed. someone online said to re-install lion. i dont have a lion recovery usb thingy, but i have a lion disk, but my disk drive no longer works due to hardware damage. so i need to back up my files from my mac partition and re-install lion OR just get rid of the Kernel Panic Thingy.
ps. everytime i try to boot mac, i get a different error message.
any help is greatly appreciated

Are you willing to lose the data that isn't backed up? If not, you have to try to back up now, before you do anything else.
There are several ways to back up a Mac that is unable to fully boot. You need an external hard drive to hold the backup data.
1. Boot into Recovery (command-R at startup; 10.7 or later), from a local Time Machine backup volume (option key at startup; 10.7.2 or later), or from your installation disc (C key at startup; 10.6.8 or earlier.) Launch Disk Utility and follow the instructions in the support article linked below, under “Instructions for backing up to an external hard disk via Disk Utility.”
How to back up and restore your files
2. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode by holding down the key combination command-T at the startup chime. Connect the two Macs with a FireWire or Thunderbolt cable. The internal drive of the machine running in target mode will mount as an external drive on the other machine. Copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
How to use and troubleshoot FireWire target disk mode
3. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.

OSx not recognized. Invalid node estructure error but Windows 7 partition works perfectly. All tests done but still don't know what is wrong

I have an Imac Snow Leopard 10.6.3 1TB hard drive , it has a partition of 100gb for Windows 7 using Bootcamp (only for games)
The computer was kind of slow one night. The next day it was so terrible slow that I decided to restart it, but it never showed OSX again. If I try to boot into single user mode it shows Windows Boot Manager. Even booting with alt only shows Bootcamp Windows. Is like OSX dissapeared.
I tried Disk utility and it showed an "inlavid node structure" error, "Disk Utility cannot repair this disk"
I also used Diskwarrior, the test was relatively fast and showed this at the end "Disk Warrior has successfully built a new directry for the disk. The new directory cannot replace the original because of disk Malfunction. Disk Malfunction is a failure of or damage to any mechanical component of the disk or any component connected to it"
I also did a S.M.A.R.T. test from diskwarrior which turned out ok
I used Apple Hardware test, (booting with D and the Applications DVD). It goes through several things, even logic board but when it reaches "testing in progress" almost at the end it gets stucked. I have tried the simple and complete test in many different ways, with mouse, without, everything disconnected, it doesnt matter, clicking the "Stop Testing" button or using cmd+period (as instructed on screen) doesn't stop the test. The "Total Time Testing" field also stops counting. I have to force shut down with the power button every time.
But here comes the most odd part of this story. The computer now almost always boots in the Windows 7 partition which works perfectly. I can chat, use viderocamera, save, delete, listen to music, watch videos, etc.... I even enter from Windows all my MAC Archives and backuped almost the 900Gb I had with no problem (great thing to use Bootcamp, never imagined it will be this useful).
So my question is, WHATS WRONG? The hard drive? the logic board? the fan? I need to know in order to buy the replacement. I have no warranty anymore and would like to fix it myself.
Please help me understand what is going on

RESOLUTION:
I erase the drive completely following the security measure "Zero Out Data" and then reformat the drive. According to what I read, by following the zero out data procedure, the computer checks the drive and isolates possible structural errors in the disk ( don´t know if it is true) I had everything already backup through Windows as explained originally.
After I reformat the drive everything is working OK. I have done the tests again (Disk Utility and Disk Warrior) that showed the drive to be in perfect order. So probably the error was caused by lack of sufficient free space in the disk ( 30 highly fragmented GB for a 1TB computer) that made OS X incapable of handling new information and was deleting key elements (?) in short a fragmented and saturated disk. However still do not understand why most tests could not complete or showed info relating to structural damage and now the same tests are saying everything is OK...
So if anyone goes through something similar, try erasing and formatting the drive, see how it goes.
Thank you very much baltwo!

How do I ensure bootcamp partition works after upgrading snow leopard to mountain lion

I am very apprehensive about upgrading to Mountain Lion due to performance concerns and the debacle with the new Auto Save feature which seems like a very poor and confusing solution to a problem that didn't really exist. I am only considering the upgrade, so that I can get the latest version of Xcode - 4.3; for some reason, 4.2 for SL is no longer available and my current 4.0 version is no longer supported, so I feel forced to upgrade to ML. Also, I have a bootcamp partition that I need to be able to use without issues after having upgraded to ML. So the essence of my question is this: what steps do I need to take prior to upgrading to ML to ensure that my Bootcamp partition is left intact and bootable. I have already created a compressed backup disk image and stored on a separate external hard disk for precautionary reasons. Is there anything else I should know beore going ahead with the upgrade?
Thanks.

Auto Save is actually a very useful feature. If you are typing a paper in Pages and you haven't saved in a long time, and then your battery dies suddenly, your paper is saved. Before Auto Save, you would have lost all your progress.
Your BootCamp partition will not even be touched during the install of Mountain Lion. As long as you make sure to select your Mac OS partition during setup, nothing will happen to your Windows side and everything will still work fine.

Windows 7 partition works fine, Mac OS X faces grey screen of death

Hi all,
I have a very weird problem and I hope you can help me out.
I loaded Win 7 on a seperate partition. Up until recently, I could load into either Win 7 of Snow Leopard without any hassles.
Recently, whenever I try to boot into Mac OS X , i get the grey screen of death....and i can't figure out a reason why. The weird part is Win 7 works perfectly fine....no issues whatsoever.
Any ideas about what could have gone wrong? Thanks a lot!!

Boot from another Mac OS media - hard drive or DVD - and use First Aid Disk Repair.
Did OS X crash/freeze or something?

Web pages slow to load with IE11 and the cursor/mouse is very slow to work until after page loads

Web pages are very slow to load, I hve run Norton Eraser and found no issues that would cause this

New HP Pavilion three weeks ago. After several attempts by the 'experts' I finally got a straight answer from a tech in the Philipines yesterday, 01-29-2015. HP and Microsoft are working to resolve the issue of slow pages and a dead cursor until the next page finally loads. You may have discovered that Google Chrome DOES NOT have this issue. Comments about HP would not be allowed here so I will just say, use Chrome until the issue with IE 11 is resolved.

IPod Touch 5th gen - GPS Very Vague / Not Working Well at All

I've been trying to use the NavFree GPS app on my new iPod touch 5th generation.
All I can say is that it sort-of works - in so much as it displays the vague vicinity I'm in within a few streets, however most of the time it just seems to be constantly hunting around for a location and is useless in the car for actual real-time directions - which seem to be randomly thrown out every now and then.
I've tried locating it in numerous places on the windscreen and on the dashboard but it hasn't made any difference whatsoever. Also when using it out in the open in walking mode, it will locate me for a moment then will wander off again and will start to show me standing in numerous different streets and places nearby.
I'm very disappointed at the moment because I purchased the full version with all the extras thinking that I've solved my sat-nav needs, but it's unusable as it is.
Can anyone help me with fixing this?
Cheers.

The iPod touch does not have a GPS radio. For location it relies upon the locations of nearby wifi routers that are in Apple database of routers and their locations. Thus, this app/the iPod alone without a real GPS accessory, works very poorly in a car since it really can't see may wifi routers and without a internet connection, can't access the Apple database to try to locate new routers that it finds.

It's a very tough partitioning work?

Similar Messages

Maybe you are looking for