Any guidelines on uniform ext size?

Hi,
Are there any guidelines, to be followed for optimal performance of tablespaces, in setting the uniform extent size of locally managed tablespaces? I am particularly interested in the percentage of the total tablespace size, to be used as the extent size. Even any other guideline will be helpful.
Thanks
Yash

I dont think there's is a "RULE" about that, just good sense i think.
If your biggest table is 2GB, make one tablespace (or more if you make partitionning on it) for this table with something like 500MB extent. Make a specific tablespace for the index too with extent like 200MB.
You should also have littles tables such as parameters tables with little size like few KB to 100KB => make a tablespace for theses littles tables with a 32KB extent for example and a tablespace for the indexes with a 16KB extent size.
Fred

Similar Messages

Large Uniform Extent Size = Slow TRUNCATE?

Here's the scenario...
We have a a tablespace with the following storage parameter:
EXTENT MANAGEMENT LOCAL UNIFORM SIZE 32M
Users were complaining about slow TRUNCATE performance. I saw the same when I created a table with 30,000 rows - same as the user was complaining about - in the same tablespace.
I proceeded to move the objects from the schema the user was referencing to a tablespace with:
EXTENT MANAGEMENT LOCAL AUTOALLOCATE
... and the TRUNCATE executed in the expected time (less than a second) for the same amount of rows in the same table structure.
Why does a large UNIFORM extent size (such as 32M in this case) cause for slow TRUNCATE performance? I wasn't able to find an exact cause of this in the forums or on Metalink thus far.
Version: Oracle DB 10.2.0.3
System Info:
Linux ilqaos01c 2.6.9-55.0.12.ELsmp #1 SMP Wed Oct 17 08:15:59 EDT 2007 x86_64
Thanks.

Robert Sislow wrote:
The Metalink article was helpful, however, the database we're on is version 10.2.0.3, and the article is referencing 9.2.0.4.
Additionally, the last few responses in this thread are referring to concurrent TRUNCATE operations. The TRUNCATE that we're running is a single-thread TRUNCATE on a very small table - about 8000 rows.
After executing a 10046 level 12 trace, and using the Trace Analyzer tool, we've found that the "local write wait" event is taking up ~90% of the statement's activity for each run. Once again, all we can find that's causing this is the fact the the extent size in the tablespace with the table where we're seeing the slowness is set to UNIFORM size of 32M.
You're using ASSM (automatic segment space management), which means you have a number of bitmap space management blocks scattered through the object.
If you're running with 32MB uniform extents, the first extent will be 4096 blocks, and there will be one level 2 bitmap, 64 level 1 bitmaps, and the segment header block at the start of the extent. With autoallocate, the first extent will start with one level 2 bitmap, one (or possibly 2) level 1 bitmap(s) and the segment header block.
When you truncate an object, all the space managment blocks in the first extent (and any extents you keep) have to be reset to show 100% free space - this means they may all have to be read into the buffer cache before being updated and written back with local writes (i.e. writes by the process, not by dbwr).
So you have to wait for 66 reads and writes in one case and 3 (or 4) reads and writes in the other case. This helps to explain part of the difference. However, a local write wait should NOT take the best part of a second - so there must be a configuration problem somewhere in your setup. (e.g. issues with async I/O, or RAID configuration).
Regards
Jonathan Lewis

Uniform SGA sizes or not?

Our shop is currently running Oracle Applications 11.5.10.2 on a single node database(10.2.0.2) on Sun Solaris10. We are planning to migrate to RAC(10.2.0.3) and have started work on our development servers. We are planning our production architecture and have a question related to SGA sizing between nodes.
We our trying to get a better understanding of what our SGA sizes on each of our nodes should be if we have one large capacity node and several smaller capacity nodes. By capacity I mean the size of memory and number of CPUs. The biggest concern is the size of memory. On our large box we will have 48G and on each subsequent node we will have 32G. The SGA on the big node is currently about 12G and the PGA 8G. Combined with other memory requirements we can consume 28-30G on our server. My questions are: What is Oracle's recommendation for sizing the SGAs on the smaller nodes? If we size them based on our large node would we run into memory shortages on the smaller nodes? Does RAC require a uniform SGA size across all nodes? Thanks.

Oracle does not require the same SGA on all nodes. All machines that are intended to share the same workload will typically have similar SGA sizing. However, machines that are intended to carry different workloads will typically have different SGA configurations.
The SGA is node specific and is defined by the workload expected on that node. Realize that the SGA has a number of pools, the major ones being 'data buffer' and 'shared pool'.
In very crude terms, the shared pool is used to handle the SQL & PL/SQL, and the buffer is used to handle the data being affected by the SQL and PL/SQL.
If a node is designated to handle specific workload ("this is the batch machine", "this is the backup machine", "these machines are for the customer service team's web screens") the SQL thrown at the node will be potentially different fromn any other node and it should be sized for that workload. This is standard 'performance tuning'.
Workload segregation is typically accomplished using the 'Service' capability of the database and listener.
IOW, RAC does not eliminate the DBA's need to tune based on workload. The tuning is done at the instance level.

Any way to have file size included in the first search in finder?

Is it possible to somehow show file sizes when doing a search in finder?
On Panther, it was very helpful to have the file sizes listed. This immediately revealed whether the photoshop files I was looking for were full size or reduced.
But when I run a search in Snow Leopard it only shows name, kind and last opened. Otherwise I have to also add a second search to add in file size.
Any way to have file size included in the first search?
Thanks!

Well, I wish I could take credit for knowing it was there before two days ago... but I dropped my laptop a couple months ago and it finally died for good on Friday, and I noticed this on the new laptop when setting up my Finder preferences.

HT4489 this is ridiculous! how do you keep the size of the picture for a contact that small? it is usually a piece of a lager picture... any way to make the size of the pictures the 224 KB they want? I always thought the application cropped the picture t

this is ridiculous! how do you keep the size of the picture for a contact in the address book that small? it is usually a piece of a lager picture... any way to make the size of the pictures the 224 KB they want? I always thought the application cropped the picture to fit their requirements...
Help
Leo

Gem
Events are organised strictly on date and time, as read by iPhoto from the Exif data in the Photo. You cannot manually sort.
Create Albums. You can do much more organising with Albums, use Photos from different events, place them as you will. Best of all, Albums use no disk space at all. They simply reference the file on the Hard Disk. So a pic can be 1, 10 or 100 Albums with no wasted disk space whatever.
Regards
TD

Are there any guidelines on how to customize R/3 reports into BW

Hi Everyone,
I have quite a number of R/3 reports that is required to be converted into a BW report but I do not know what I am supposed to do.
Are there any guidelines on how to determine if a R/3 report should be created in BW? If it should be done in BW, how do I consider if it should be reported of a cube or an ODS?
I have been doing development for ard 3years and this is the first time I have to analyze and come up with a functional/design specs. Need help.
If there is any documents on the guidelines, please send it to [email protected]
Thanks.
Regards,
Shunhui.

Hi Shunhui
TABS -> here Venkat was refering to SAP education courses on BW on extraction,reporting etc.
I am not aware if there are any guidelines given by SAP.
I will try to help you build the approrach for this:-
1. You should collect functional specification of R/3 report. This will include the functionality of that report, logic & calculations involved, usage of report output by end users etc.
2. Collect technical specification- In this you create excel sheet with all fields in R/3 report with relevant details such as formulas used, calculations involved etc.
3.Map these technical specs with BW business content. Try to see if you can get Business content datasource which will be a fit for majority of your R/3 report fields.
4.Carry out gap analysis and end of this excerise determine how you are going to fill this gap - whether buy using Zinfoobject,routines,datasource enhancements etc.
5.Classify the reports as Aggregate or transactional level. If it is transactional level then you need to make use of ODS.This will determine your data model in BW.
6.Based on 5 steps mentioned above,create a design document with dataflow & data model details.
7. Get a Sign off on functional,technical specs & design document with proposed dataflow from users and implement it.
For templates of functional & technical specs , you can refer to blueprint section of Accelerated SAP.
Hope this helps
Regards
Pradip

When i put firefox in offline mode, and then click on pages saved in history , it can't load any pages or any images. i put cach size to 250mb but the problem is the same, it saves history for two months, but can't load pages.

when i put firefox in offline mode, and then click on pages saved in history , it can't load any pages or any images. i put cach size to 250mb but the problem is the same, it saves history for two months, but can't load pages.

Hi there,
When I inspect your site in browser tools, I'm getting 404 errors from your page:
[Error] Failed to load resource: the server responded with a status of 404 (Not Found) (jquery-2.0.3.min.map, line 0)
[Error] Failed to load resource: the server responded with a status of 404 (Not Found) (edge.4.0.0.min.map, line 0)
BarnardosIreland wrote:
I would have thought that publishing should give a complete package that doesn't need any further edits to the code and can just be directly ftp'ed to the web - is this correct?
In general, you are correct - but also your server does need to be properly configured (and those errors above lead me to think it may not be) to serve the file types that your uploading - but it could be something else entirely. Can you zip up your composition folder, upload it to your Creative Cloud files, set it to share, and then post a link here so I can download it? If you'd rather not share it publicly, can you PM me with a link to your composition files?
Thanks,
Joe

Any Guidelines/Documents: when upgrading from BW 3.x to Netweaver 7.0?

Hi,
Any Guidelines/Documents: when upgrading from BW 3.x to Netweaver 7.0?
Thanks

hi Amanda,
this should help a lot
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/10564d5c-cf00-2a10-7b87-c94e38267742
also check
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/b8d163a7-0301-0010-d9b0-98f692ea3c60
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/2e8e5288-0b01-0010-2ea8-bcd4df5084a7

[SOLVED] Any guidelines for changing AUR package name?

I have TTWM in the AUR, and I'm changing the name to Alopex.
I can revise the PKGBUILD to change the name, and put ttwm-git in the "replaces" and/or "conflicts" array, but when I submit this to the AUR will there then be two AUR packages?
There is no need for the ttwm-git package to remain in the aur as they will be identical - it's just a name change. I don't want to needlessly clutter the AUR, so if there are any guidelines or best practices for renaming AUR packages, let me know.
Last edited by Trilby (2013-04-20 11:12:07)

If the wiki is unclear, please edit it https://wiki.archlinux.org/index.php/AUR#Other_requests
Package merging has been implemented, users still have to resubmit a package under a new name and may request merging of the old version's comments and votes on the mailing list.

HT5293 any way to enlarge font size on new 2013 iMac 27 inch?

any way to increase font size on nnew iMac 27 inch?

Hi,
In the Finder > View Menu > View Option > change the Text size.
This changes the size of text under the icons on the Desktop.
If you open any Finder window after this you can create a Default size for all windows from the same panel.
8:19 PM Thursday; October 17, 2013
 iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.4)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
 Couple of iPhones and an iPad
"Limit the Logs to the Bits above Binary Images."  No, Seriously

Any way to increase screen size?

Hello - is there any way to increase the size of my webpage display? I know I can reset the font size, but is there any way to actually increase the size (other than just hitting the green button in the upper lefthand corner)?
Thanks!

http://discussions.apple.com/message.jspa?messageID=4103472#4103472

When I add a new bookmark, and the (star) Page Bookmarked window appears - is there any way to expand the size of that window so that I can see my entire list of folders when adding a new bookmark to an existing folder?

When I add a new bookmark, and the (star) Page Bookmarked window appears - is there any way to expand the size of that window so that I can see my entire list of folders when adding a new bookmark to an existing folder? The endless scrolling technique is far too tedious when trying to add a new bookmark, because the window is simply too tiny. Is there maybe a plug-in that will let me grab the corner of that window and re-size it? Thanks!

I suggest you install the "Add Bookmark to Here2" extension, then you can expand the the list but you will not see the bookmark itself in the list if that is what you wanted. At the top you have three major folders you can select one of them and scroll up and down. Below that you have your most recently used folders and you can select one of them instead and scroll up and down. You can see the folder the bookmark is in -- they get added to the bottom
If you really want to see the bookmark within the folder the same extension allows you to bring the bookmark to the folder from say the bookmarks sidebar that is why it is named as such. I use it but mainly i use the dialog.
Please continue reading about bookmarks and some related extensions at
* http://kb.mozillazine.org/Sorting_and_rearranging_bookmarks_-_Firefox
* https://addons.mozilla.org/firefox/addon/add-bookmark-here-2/
* http://dmcritchie.mvps.org/firefox/firefox.htm#addbookmarkhere2
* http://dmcritchie.mvps.org/firefox/kws.htm
If you are not using tags at all, you can remove a whole lot of confusion by removing them from the dialog via the extension.

Viewing a PDF document with uniform page sizes:

As part of our month end reporting, the members of our team PDF several Word, Excel and PowerPoint documents and someone combines them into one PDF document using Adobe Acrobat X Standard. The combined document is sent to the Board of Directors. We are finding that while the document prints fine, when we/the Board are viewing it on our laptops, ipads, etc. some pages fit one full page to a window, while others are too big and some are tiny. I know that when I am viewing it I can click the ‘fit one full page to window’ icon, but I can’t seem to save it like this so that the Board can also view it like this. Is there a way to achieve this uniformity by adjusting certain settings at the time of PDFing the individual Word, Excel and PowerPoint documents or at the time we are combining? Any help would be sincerely appreciated.

The program I use to create the TIF files (OpenText's eDOCS Imaging) does not make PDFs, it makes TIFs (and TIFFs). To then convert this, if I try to do it through Adobe directly, I get an error which prompts me to open it in the native program and to choose print and then select the adobe printer.
This works perfect if every page is the same size, but many times my documents have many different page sizes as well as portrait and landscape within the same document (but that is a separate option).
Doesn't Adobe have a "use the original page size / orientation" as an option when creating PDFs from existing documents?

Any way to change file size display to NOT use GB or MB notation?

I'd like to see exact byte counts for file sizes from time to time in the windows listing files (without having to Get Info). I've searched for options to change how file sizes are displayed by finder but have come up completely empty. Any chance this choice has not been completely co-opted from me by Apple's omnipotent designers?

Welcome to Discussions.
I believe there are 3rd-party applications that do it, such as [WhatSize|http://www.id-design.com/software/whatsize] and perhaps also [Path Finder|http://www.cocoatech.com].
/p

Any way to decrease file size of imported AVCHD clips?

Since I got my AVCHD camera I've pretty much eaten up all the space on my HD because of the way iMovie converts the files to a format that takes up like 15 times more space.
I do have some of my lesser-used footage on an external HD, but my Time Machine backup is also starting to get full and I need to find a solution for the clips that I don't want to erase, but don't need to store in the full HD format. Is there any way to compress or otherwise decrease the file size of an imported clip? I always import in the highest quality possible to evaluate, and then choose clips I only want to keep in a lower resolution.
Thanks in advance for suggestions.

Your AVCHD files are highly compressed. During import to iMovie they must be expanded to an editable format (AIC) which increases the file size.
The only way to "compress" these files is an export. An export from iMovie would "render" any effects, transitions or text making these items un-editable in the future. You could export your "raw" footage but this could also lead to problems in future imports.
Newer external drives could be partitioned for use with iMovie storage and your Time Machine files. You can also probably connect your current external giving you even more storage.

Any guidelines on uniform ext size?

Similar Messages

Maybe you are looking for