About Performance

In oracle text, Ultra Search and SES, which has the best performance in indexing at the same environment?
Thanks in advance.

Oracle Text is the indexing engine for SES and UltraSearch, so in principle they should all be the same. However, SES and UltraSearch both do additional processing beyond plain indexing, so if you're looking at total throughput speed, you'll get a better result with a simple Oracle Text index.

Similar Messages

Is there a way to view Flash videos on my iMac without downloading Adobe Flash Player? I'm concerned about performance and security with Flash Player.

Is there a way to view Flash videos on my iMac without downloading Adobe Flash Player? I'm concerned about performance and security with Adobe Flash Player.

If the video is only available in a format that requires Flash player : then no.
However, a great many can also be viewed in an HTML5 version, in which case http://hoyois.github.io/safariextensions/clicktoplugin/ or similar can be set up so that Flash never runs unless you specifically choose it to.

Information about Performance manager's APIs

Hi All, I require some information about Performance Manager of Business Objects XI R2. Business Objects provides APIs for BOE server, Web Services for customization, as that of, is there any APIs available for Performance Manager (for customization)? Can we customize the performance Manager as per requirements? Please let me know your views & finding on this topic. Thanks

Hi John, From the output you shared it looks like you using Performance Advisor and want to share a graph of a 7-mode system. The instructions link you shared is from Performance Manager which is for Clustered Data ONTAP only. In the Performance Advisor there is unfortunately no way to share a link. You can 'save as' to png as you probably already saw, or you can use the dfm CLI to generate the same and email, perhaps as a daily report. There is also a data collector that will post to the NetApp ToolChest that submits data to Graphite with dashboards in Grafana. This solution would allow sharing of a URL like you desire. If you want more info on this let me know. Kind Regards,Chris MaddenStorage Architect, NetApp

A simple question about performance!

Hi! I have a simple question about performance. Suppouse that you have a servlet or a class with DB access, and you need to use a value several times in that page. What is best, to assign the value from say, a resultset or a request.getParameter() to a variable or to call the resultset or the request every time you need to retrieve that value? Which option uses less memory, which is faster, etc.?
Hoping the best fou u
Raul

If you need more values from a db, the best is to open some connections (connection pool) and use the for accessing the db.
To get the data only once, open the connection, get the data, store the data whereever you want: variable (class), hidden control (if you want to send from one page to another by request) and close the connection as quicky as possible.
The advantage of the first method is that the most time consuming activity (connections opening) is done only once.

Looking for book about performance tuning 11g database

Hi,
I am looking for books about performance tuning oracle 11g. The documents from OTN 2 days 11g performance tuning and performance tuning guide are not really study material.
Has someone idea?
greeting,
Max

Hi,
http://astore.amazon.com/oraclebooks-20/detail/1590599683 {Part IV Database Tuning }
Greetings,
Sim

Doubts about performance:

Doubts about performance:
Hi:
In my work we have performance problems with the database (Oracle 9i v. 2), we have said that the TOAD consumes a lot of resources.
I know how to affect the performance of the database using a tool such as the toad.. ?
It is true that the use of inner join and left join instead of = and (+) is better?
Thanks

This is too broad a question.
Toad can fire random sql.
sql*plus can fire random sql.
Why would Toad be the problem?
You would need to gather statspack data to demonstrate this.
Sybrand,
Agreed on it and its a relevant point.But I guess he is not worried about the db performance.Anyways lets see what OP says.
Inner join and left join will always use CBO (Cost Based Optimizer) instead of RBO.
I am not sure that I have read that anywhere. They came into Oracle in 9i where optimizer mode was choose as the default one. Just by the syntax, oracle would push them to use CBO as the default one,I am not sure about this. Even if we are having + symbol and have the stats,Oracle wold go for CBO right?Can you please point me to some where in the docs where it is mentioned that using this keywords,Oracle would use only CBO?
Aman....

How did you learn about performance issues?

I've been thinking about trying to get a LV certification, so I tried out the online test, and I've got a few questions about learning LV on a deeper level.
One question asked whether it is more efficient to cast each piece of an array as its being built in a for loop, or to cast the entire array at once, after the array has been created.
Another question asked, if array indexing is enabled on the output of a while loop then is the array resized on every iteration?
I can make guesses at how LV works, but I really don't know what goes on under the hood. How do you pros know what's really going on with your code?
Also for anyone out there who has been certified, can you pass the test with just experience, or do you have to undergo some NI training to learn some things? Has LV certification been beneficial to you?
Thanks,
John

Hi John,
I have mentored 2 1/2 CLA's (the 1/2 is the "Architect Supreme" and she really only needed encouragement).
Here are my suggestions.
1) Study for the test you plan to take. Studying above the test level you are after can only confuse things.
2) If you can get the funding, take the NI courses suggested for that test. Some of the Q's come from the text.
3) Monitor this Exchange for questions regarding performance and speed.
4) Use the search box at the top of this page and search for "Greg McKaskle". Some of the best performance info available is in his writtings.
5) Use the "info-LabVIEW" serach engine that can be found at
http://www.searchview.net/
and search fro Greg McKaskle and Rolf Kalbermatter. Again great information.
6) Make a habit of using the "Task manager>>> Performance screen while you are devloping and testing. It is a good way to find out what things are good and which are bad. You find out subtle things like straight line interpolation on a chart is faster than step interpolation.
7) Read all of the LV release notes. The questions you posted are answered in those docs and changed in LV 6.0.
8) Review the LabVIEW ZONE challenges. They are competitions based on performance. Read the reviews.
9) Read the white papers. Do not miss 144!
10) Start posting Q's on this Exchange. Let us expert (myself excluded) that prowl this list help out.
Done for now,
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

How to go about performance issues

Hi Experts,
Need help on how to get started on below situations.
Users are complaining about queries running slow even after rebuilding indexes,updated stats,no blocking?
How to go about troubleshooting such issues?
Thank you.

http://technet.microsoft.com/en-us/library/ms177500(v=sql.105).aspx
http://redmondmag.com/articles/2013/12/11/slow-running-sql-queries.aspx
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
MS SQL optimization: MS SQL Development and Optimization
MS SQL Consulting:
Large scale of database and data cleansing
Remote DBA Services:
Improves MS SQL Database Performance
SQL Server Integration Services:
Business Intelligence

About Performance Tuning in java

What good ways to improve performance of code that uses lot of strings?

Use appropriate data structures and algorithms.
[url http://java.sun.com/developer/technicalArticles/Interviews/devinsight_1/]Write dumb code.
Don't worry about microoptimizations, and don't look for "clever tricks."
Don't assume something will be "slow" and then write fugly code to "fix" it. Write clean, simple code using standard idioms, test it, and if it doesn't meet your performance requirements, profile it to find where the bottleneck is, and once you find and fix that, test and profile again to see if the fix actually made a significant improvement. If it didn't, and the new code is not at least as clean as the old, then revert it back to the previous code.
All of the above advice applies for all Java coding, not just String-heavy cases.
The only semi-major String-specific performance/memory techniques that come up are as follows. And they don't really matter all that often in the real world:
1. When building up a String in a loop, if the pieces are large or if there are many pieces, use StringBuilder or StringBuffer's append() method, not direct String concatenation with plus-equal.
// do this
String s;
StringBuilder sb = new StringBuilder();
while (...) {
sb.append(something);
s = sb.toString();
// not this
String s = "";
while (...) {
s += something;
// or
s = s + something;The reason for this is that with the second approach, every time through the loop we create a new String object and copy all the characters over from the previous one. The first approach just keeps adding characters to the end of the existing StringBuilder.
However, this really only makes a practical difference if the pieces are very large, or if there are a lot of them.
Also note that String s = "a" + b + "c" + d; is fine, because the compiler turns those into append() calls anyway.
2. Use new String() when taking a small substring of a large String, if the small one will be kept around much longer than the larger original.
// do this
String s1 = a_very_large_string;
String s2 = new String(s1.substring(5, 7));
// not this
String s1 = a_very_large_string;
String s2 = s1.substring(5, 7);The reason for this is that substring uses the same backing array as the original. If we're done using the large String, that String object itself may become eligible for GC, but the large backing array will be kept around as long as the smaller String is alive. In this case, we're wasting most of its space for just a few characters. However, when we do new String(), that creates a new String object with its own backing array of just the characters that are part of that String, so once the original goes away, its large backing array can go with it.
If the strings are of about the same scale, or if they're both small or even only "sort of large," this will not be an issue. Also, if both of the Strings' lifetimes end at about the same time, it won't be an issue.
Again, though, don't overdo it. Pay close attention to the cases I described where these techniques don't matter.
Edited by: jverd on Oct 6, 2010 10:08 PM
Edited by: jverd on Oct 6, 2010 10:10 PM
Edited by: jverd on Oct 6, 2010 10:21 PM

A question about Performance Settings

         Dear all.
                       Hi all,I want add a performance poller about Environmental Temperature.
                        There is an error as shown in the figur:
                        The device is Nexus 7010. Is it support this poller ?
                          If support,how to setting ?
                         Thank you very much

Peanuts
Thank you for your time and help.
Dumb question Reflash the firm ware
Means Install the new firm ware list on this web site
my old is v3.0.02 build 003 june 4, 2009
The new one is v3.0.02 build 4 12/10/09
The MTU thing Ican figure out. click save OK. But what the heck is
Power cycle the router
Un-plug it ?
Sorry to a pain. Ready to throw this out the window. It works good/great then very poor or not at all. In wireless mode.
The other day on the lap top a friend was connected to a inter-active training video. for about 30 minutes, worked great.
Then today the Dell with windows 7 lost the wireless conection.
Thanks

LOB question about performance, fragmentation etc.

Well..
I want to discuss the issues around LOB objects.
If I have an enttity class with n-count fields and then a lob as the n+1th field, does this affect performance in any way ? E.g. if performance is random access for an object without a lob, does the performance get linear or something when the lob is introduced?
Another one:
If the latter is true: is it an option for me to use an @OneToOne mapping to compensate ?
What about fragmentation ? How can a database or whoever compensate for fragmentation, in the case the lob is the n+1th field ? Or just in general: How the fragmentation issues are handled?
(Im just thinking that lobs introduce fragmentation and brings performance down...)

This will be san=me if you are considering the Local interfaces.
For remote interface(like accessing EJB from Servlets resides in diffferent Apps Server) use the DTO(data Transfer Object) patterns.
Regards
Sushil

KDE4 + wallpaper slideshow: few questions about performance / tuning.

Hello,
I am using KDE 4.4 from pacman and set my desktop activity to slideshow. I would like to customize few things and thus - I have few questions:
1) Is it possible to change / disable transition effect when changing wallpapers? All my desktop is choppy and not responsive while the wallpaper changes and I am wondering if there is a way to repair this? (all images used as walls are at max 3MB big, usually something about 1MB. I have 7200 RPM disk, 2GB of ram and rather fast graphics card with newest Nvidia drivers, so I don't know what is the cause of slowdown...)
2) How can I programatically progress wallpaper to next image (not with the right click / Next Wallpaper image)?
3) Is there a way to disable the wallpaper change while there is a fullscreen application running? I am asking this, because when I watch HD movies and the wall changes, movie playback is really choppy... (I think that answer to the first question will also help me in this case).
I would be glad for any sugestions / interest in helping me;)
Best regards,
Mike.

Hello
1/ There's no way I know to remove the transition. Using the "raster" graphics engine helps a lot on performance : kill plasma-desktop and launch `plasma-desktop -graphicssystem raster`
2/ There's a plasma applet for this :
http://kde-look.org/content/show.php/Ne … tent=94251
http://aur.archlinux.org/packages.php?O … twallpaper
Maybe you can adapt it to your needs / find out how it works.
Last edited by xvello (2010-05-16 16:20:24)

Question about Performance

Hi
we have a Sql Server Azure dabase with a Standar 1 subscription.
I make a test, inserting 400.000 records in a table, with 15 columns and one key (identity)
I have made queries and the performance is very bad, for example:
- a group by one of the table fields spend 16 seconds returning 585 rows
In other situations, the queries spend more than 2 minutes.
is this normal for SQL AZURE?

Hello Javier,
Can you please share which edition of SQL Database you are using? You should check if you are maxing out the available resources of the edition you are. If so and you don't achieve your performance goals, you should consider using a higher performance level.
The below article has some guidance:
https://msdn.microsoft.com/en-us/library/azure/dn741336.aspx?f=255&MSPPError=-2147217396
Thanks,
Jan

A question about performance of a system.

Quote from: XFM on 11-October-13, 04:19:18
If you're having performance issues then start a new topic regarding that.
There is a low FPS in the game "Tomb Raider" (less than 22). Could this be due to damage to the board or the old bios (version 1.7)?

Not if everything else works fine...
Sounds like drivers possibly need an update.

A question about performance of envy 15t-j000

The windows 8 experience index of my ENVY 15 is 5.0, which is the subscore of desktop graphics performance.
However, I found that the index shoulde be higher because the artical on http://www.theinquirer.net/inquirer/review/2290017/hp-envy-touchsmart-15-review/page/3 shows that the total index should be 5.9 with 6.6 on desktop graphics performance. The tech spec of my computer is the same with the one in that article. Therefore, is there something wrong with my computer, for example, the driver for graphic card is not installed properly?
Hope someone can provide me a solution. Thanks a lot.

Not if everything else works fine...
Sounds like drivers possibly need an update.

Opinion about performance

A my prospect needs to insert items in the orders of 100000 or more on a SQL Server.
Has someone experienced so (or more) massive items data?
Are there, or could be, performance problems during the use?
Thanks for your attention.
Nicola

Hi Martella,
We have a client with over 180,000 items and no performance problems at all.
Regards
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