Lousy performance

Hi,
We have installed oracle 9i on a dual processor compaq 2.0ghz system with 3 raid 5 18 gb disks (windows 2000 server)
None of us have much experience with oracle, but have been using sql server for a decade.
We accepted all of the defaults during installation and have noticed really long wait time with deletes. Deleting 50,000 records, where the only criteria is on an indexed column, (i.e DELETE FROM REBATE_SIGNUPS WHERE REBATE_PROGRAM_ID IN (1000000056, 1000000059, 1000000060, 1000000061, 1000000062,1000000063) ) take over 10 minutes to complete.
Also doing things like nested queries really slows the system down. When we change the query to a join, things speed up exponentially.
Currently, only I am using the system, so there is no other load on the db.
Does anybody have a suggestion on what I could do to speed the system up. Something must be configured incorrectly to get this type of response time...
Thanks in advance,
Ned

ANALYZE
Purpose
Use the ANALYZE statement to collect non-optimizer statistics, for example, to:
Collect or delete statistics about an index or index partition, table or table partition, index-organized table, cluster, or scalar object attribute.
Validate the structure of an index or index partition, table or table partition, index-organized table, cluster, or object reference (REF).
Identify migrated and chained rows of a table or cluster.
Note:
Oracle Corporation strongly recommends that you use the DBMS_STATS package rather than ANALYZE to collect optimizer statistics. That package lets you collect statistics in parallel, collect global statistics for partitioned objects, and fine tune your statistics collection in other ways. Further, the cost-based optimizer, which depends upon statistics, will eventually use only statistics that have been collected by DBMS_STATS. See Oracle9i Supplied PL/SQL Packages and Types Reference for more information on this package.
However, you must use the ANALYZE statement (rather than DBMS_STATS) for statistics collection not related to the cost-based optimizer, such as:
To use the VALIDATE or LIST CHAINED ROWS clauses
To collect information on freelist blocks
http://download-west.oracle.com/docs/cd/B10501_01/server.920/a96540/statements_46a.htm#SQLRF01105
Joel P�rez

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It's Diablo 3's Mac client not the computer, at least thats what I'm assuming due to the current status of how bad and inconsistent the Mac client is. I run Diablo 3 on a 13inch MacBook Pro with Intel HD 3000 at 40-45 fps, but others with better computers have been struggling to get 20 fps. Try running it in Windows with Bootcamp and see how that goes because that has helped a lot with others.

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Will these intel iMacs still offer flawless performance?...

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As Timon mentioned, the problems with Windows PCs are related to Windows, not the x86 architecture.
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Bill,
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Paul Wasserman

Time Capsule external HD slow after joining an existing network.

Hi all,
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Hello Shogododo. Welcome to the Apple Discussions!
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Hashmap containsKey() method does not appear to work

Hashmap containsKey() method does not appear to work
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THIS IS MY AMAZINGLY SIMPLE CUSTOM KEY CLASS
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}....cheers

You can make a trivial implementation to return a
constant (not recommended)What do you mean by that? Hmm.. I guess you mean that
you shouldn't use the same constant for all objects?
But don't see the int value of an (immutable) Integer
as constant?
/Kaj
You can write hashCode to just always return, say, 42. It will be correct because all objects that are equal will have equal hashcodes. Objects that are not equal will also have equal hashcodes, but that's legal--it just causes a performance hit.
The value is that it's really really simple to implement: public int hashCode() {
return 42;
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The downside is that you're defeating the purpose of hashing, and any non-trival sized map or set is going to have lousy performance.
For a decent hashCode recipe, look here:
http://developer.java.sun.com/developer/Books/effectivejava/Chapter3.pdf

To know my laptop is sufficient or not

my laptop specifications are
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Third, your laptop may not have any provision at all whatsoever to add additional fast disks (likely because the stock hard drive eats up the laptop's only internal bay, the laptop's optical drive is non-removable and your laptop has only USB 2.0 ports).
Finally, you did not mention which specific graphics chip your laptop is using. With that laptop any installed GPU will likely be so lousy (performance-wise) to begin with that you might as well permananently lock Premiere to the MPE software-only mode (no GPU acceleration whatsoever).
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Nutshell...
My FiOS Quantum 75/35 service is giving me about 80Mbps straight out of the Ethernet port, as measured via Speedtest.net.
By and large, my 2008 model MBP is getting me around a quarter of that when connected wirelessly via the 5Ghz network, more or less regardless of where I go around the house.
My iOS devices are giving me about a third to a quarter of what the laptop is providing–six to eight percent of at-the-port throughput, in othe words—with the iPad 2 on the 5Ghz network, and the iPhone 4S on the 2.4 (it can't ever seem to find the five).
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I know that my house is not nirvana for wireless, and that I'm not going to get test bench throughput from my Airport devices in any event. But a factor of 15 degradation with my iOS devices seems kinda severe. I can live with factor of four with the laptop, I guess, but even that seems like kinda lousy performance.
Thoughts? Ideas? Pointers? Any and all would be appreciated.

So, a couple of things.
First, in preparing to test out a powerline network, I took down all of my AirPort Express units. Before doing anything further, my throughput went up by factors of two or more in most locations around the house. Since AirPlay, Bluetooth, and Apple TV can handle all our media streaming needs, I will no longer be using the APEs. So, addition—really, multiplication—by subtraction. Progress!
I've been utterly frustrated, however, in trying to establish the powerline network. I bought two D-Link 500MBps adapters. Plugged oneinto the wall by my router, then plugged my AirPort Extreme base station into it. Plugged the other into the wall in my dining room, where I wanted to test its performance. Went through the configuration per the manual, and followed Apple's steps for setting up a roaming network. No freakin' joy; I can't get a valid IP address out of the "remote" adapter (Yes, I confirmed that the base station was sending a non-bogus one to the "base" adapter).
Called D-Link tech support. Turns out, the "only problem" with the product is that they won't work unless they're plugged into the same electrical circuit.
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Are there any powerline products out there that don't suffer from this insignificant, tennsy-weensy, little flaw?

How to reorganise a RDA application without getting error RSSTATMAN042?

Hallo RDA experts,
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Edited by: Martin Lehmann on Sep 24, 2009 9:32 AM
Meanwhile I posted this problem to the OSS for further analysis and I am still waiting for responce...

Hello there, ALGroves.
Great job so far in troubleshooting your issue. If you haven't already, feel free to review the information in this Knowledge Base article that goes over your particular error message:
Resolve issues between iTunes and security software
http://support.apple.com/kb/TS3125
If the issue persists, you can try the information in this article as another option for restoring your device:
What to do before selling or giving away your iPhone, iPad, or iPod touch
http://support.apple.com/kb/ht5661
Particularly:
Before you sell or give away your iOS device, make sure that you've removed all of your personal information. Follow these steps to protect your data and get your device to its factory default state for the new owner:
Back up your device.
Go to Settings > General > Reset, then tap Erase All Content and Settings.
This will completely erase your device and turn off iCloud, iMessage, FaceTime, Game Center, and other services.
If you're using iOS 7 and have Find My iPhone turned on, your Apple ID and password will be required. After you provide your password, the device will be erased and removed from your account so that the next owner can activate it.
Contact your carrier for guidance on transferring service to the new owner.
When the device is turned on for the first time by the new owner, Setup Assistant will guide them through the setup process.
Important: Do not manually delete contacts, calendars, reminders, documents, photo streams, or any other iCloud data while signed in to your iCloud account, or the content will also be deleted from the iCloud servers and all of your iCloud devices.
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro

AppleCare or Customer Relations help requested

I have been a Apple customer for years. Started with a II+ followed by Mac+, MacII, iMacG3, MacMini G4, then another Mini G4, and now a MacBook Pro. Macs have worked well for me, and in return, I have bought several Apple products.
Unfortunatley, the string of luck with my Macs has come to an end.
I got on the waiting list to upgrade to a MacBook Pro as soon as they came out. By the second week they were shipping, the store called me and told me they had my MacBook. Very good service.
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After 3 months of using my new MacBook Pro, it started rebooting randomly, had lousy performance, and was overheating. I took it to the apple store for repair. They replaced the motherboard, heat riser, and a couple of other items and return it to me. The random reboots are gone, but it still runs mighty hot.
Take it home. Use it for a couple more months. Now it starts having other problems. Like it just randomly powers off. No warning. No battary low prompts. Just boom, and it shut off, even with a battary that has a 90% charge.
It also locks up frequently. Not completely locked up, just fits of no response. For 15 or 30 seconds, the computer just won't respond. No mouse clicks. No keyboard entry. Won't even respond to trackpack movements.
Then, after using it for a couple of hours, it gets dog slow. The same apps that ran okay right after you fired it up just start running slower and slower. It's not running out of memory, as I have 1.5GB of ram in it. For some reason, it just gets slower with use, even if you close all apps, and restart just one app. It's not whats running at all, it's just how long you use the computer after startup that effects it's performance. And no, I don't run PPC apps. I only run universal apps.
I post this information on a popular mac forum, and someone tells me that the fan is defective, the computer is overheating, and therefore, the processors are slowing down to protect themselves from generating more heat.
I know intel processor are designed to do this through their TM1 and TM2 thermal monitoring, so this makes complete sense.
I go to apple store, they do some tests, tell me that I have a bad battery. They replace it under warranty and call it fixed, and tell me to pick it up.
This may explain the random shutdowns, but it doesn't explain the constant performance problems. I told them about the overheating, and again, they failed to listen, although they did run 24 hours of testing. I guess they get so many hot MacBooks, that they don't really know when one really runs hotter than it is supposed to
I guess I'm just frustrated. I'm going to pick it up again tomorrow, but with only a battery replacement, I really don't think they have addressed the other issues, and I know I will be bringing it back in again.
As a devoted Apple customer, I am starting to loose faith. Can someone in AppleCare or cutomer relations help?

Don't take this wrong. But I'm not going to spend $60 more dollars on this computer to turn it from a portable into a laptop.
They sell these things to the un-suspecting public (at least in the beginning) as laptops. If the thing is designed wrong and gets too hot to put in a lap, then don't call it a laptop - which they don't now anymore.
I may sound stubborn here but let me make my point. Everyone wants me to spend money to cover apples less than stellar product. Buy a iLap to make up for the heating problem. Buy apple care to insure that my lemon keeps on running after the warranty 1 year warranty. Someone else has suggested that I try to debug the problem with this computer and take pride in solving it myself - and to some point, I agree with him.
But the thing that makes me mad is that I paid a premium for this computer. I was an early adopter that bought this computer in week 2. I bought this computer to move over to the intel core mac's for the extra performance they offer, and because I have had such good experiences with apple and Macs before. I'm just not going to invest more of my time in this thing. It's time apple step up and take responsiblity.

Oracle Schemas

I have come to Oracle (specifically 9i) from SQL Server 2005 and have discovered that the concept of a "schema" seems to be quite different between the two databases.
In Oracle, a schema it appears to model a user (e.g. HR, OE, and QS), while in SQL Server it models a "namespace" (e.g. HumanResources in the AdventureWorks database).
I find that the SQL Server model makes more sense. In fact, I am puzzled as to how an Oracle database can be partitioned into functional areas (like HumanResources or Engineering).
Can anyone shed some light on this. Does Oracle11g use the same concept of a schema as 9i?
Thanks in advance for any help.
Best regards,
Frank J. Reashore
Vancouver, canada

Others have given you good advice with respect to your specific issue but I would like to give you some generic advice.
If you want to be successful in Oracle you will need to put away the attitude that what you know is better than what you don't know. If you can't just walk away.
Almost nothing in Oracle works the way it does in SQL Server. Almost none of the capabilities are as limited as those in SQL Server. And whether you want to talk about the definition of common words (database, instance, cluster, page, block) or how log files work, or how locking takes place, or whether temp tables are used ... if you try to do it the SQL Server way you are guaranteed to either fail or build insecure, unscalable, systems with corrupt data and lousy performance.
Reconsider your approach.
PS: The same is true for people schooled in Oracle moving to another company's RDBMS product. A failure to adjust one's thinking, and learn to read, is a road to failure.

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footage1.avi - Dx50 XVid 1.0.3, Dolby AC3 48kHz 192kb/s, 716834 KB
Attempting to import as timeline causes Encore CS3 to hang.
Importing as an Asset allows it to import but when I try to click
on it in the project windown to add it to a new empty timeline,
Encore hangs. It plays fine in Windows Media Player.
footage2.avi - Dx50 XVid 1.0.3, MPEG-1 Layer 3 48kHz 128kb/s, 718302 KB
Imports fine as either a timeline or asset but no audio track comes
with it, even though there is an audio track in the footage. It plays
fine in Windows Media Player. Video imports perfectly, just no audio.
footage3.avi - Dx50 XVid 1.0.3, MPEG1-Layer3 48kHz 112kb/s, 717606 KB
Imports fine as either a timeline or asset but no audio track comes
with it, even though there is an audio track in the footage. It plays
fine in Windows Media Player. Video imports perfectly, just no
audio. I tried converting this one using AVS to both MPEG3 and DivX,
each using MPEG1-Layer3 44kHz 192kb/s audio, and got the same issue
upon importing into Encore CS3. I also loaded it into Camtasia
Studio and it looked fine over there. The audio was present and I
was able to export it as a .WAV file. When I tried looking at the
file in Soundbooth CS3, there was no audio track or, more
accurately, the audio track was a flat line.
By way of comparison these are importing perfectly:
footage4.avi - XVID XviD 1.1.0 Beta2, MPEG1-Layer3 48kHz 189kb/s Two mono
channels LAME3.96r, 717436 KB.
footage5.avi - XVID XviD 1.1.0 Final, Dolby AC3 48kHz 448kb/s Six
channels (3/2 .1), 716418 KB.
footage6.avi - XVID XviD 1.1.0 Final, Dolby AC3 48kHz 448kb/s Six
channels (3/2 .1), 716418 KB.
footage7.avi - XVID XviD 1.0.3, Dolby AC3 48kHz 448kb/s 6 channels
(3/2 .1), 717502 KB
footage8.avi - XVID XviD 1.0.3, Dolby AC3 48kHz 448kb/s 6 channels
(3/2 .1), 717180 KB
footage9.avi - XVID XviD 1.1.2 Final, Dolby AC3 48kHz 448kb/s 6 channels
(3/2 .1), 2291904 KB
Although this one imported & transcoded correctly, when I went to
build it to a DVD image file I got some strange errors during the
"planning video" stage that prevented the process from completing.
Unfortunately I neglected to write down the error message I recieved
which read like quite nonsensical babble to me, and I have since
deleted the project folder. I remember it was not a memory or
display related error and it included a timestamp where the error
was happening. I played the footage in the preview panel thru the
identified timestamp but it previewed perfectly without even a
jitter in either the video or audio. Took forever to transcode so I
doubt I'll be doing this one again anytime soon.
Another issue I am having is with the motion menus. I burned a DVD and it does not load correctly in one of my DVD players (a Sony rdr-gx330 recorder/player). It appears to take extra time to recognize the disk, the startup (first-play) menu does not show automatically, and I must press the Main Menu button on the

Another issue I am having is with the motion menus. I burned a DVD and it does not load correctly in one of my DVD players (a Sony rdr-gx330 recorder/player). It appears to take extra time to recognize the disk, the startup (first-play) menu does not show automatically, and I must press the Main Menu button on the remote control to make it appear. Other than that it seems to play ok in that player. Also tested it in 2 other DVD players (a Panasonic and Zenith) and it worked just fine like it's supposed to in them. Also plays perfectly in my computer's DVD player/burner using Windows Media Player v10. I tried burning to Memorex +RW single-layer single-sided disks at 6, 7, & 8Mbps project settings but got the exact same result every time.
Encore CS3 crashes fairly often during authoring, particularly during imports, and when I go to edit things like calling up a timeline in the timeline panel, dragging footage into an existing timeline, or changing button links in a menu etc.. I have also experienced seemingly random hangs even more often, probably 5 or 6 times as often as a crash. Saving the project after every little change I make, then closing and restarting Encore allows me to make progress albeit at a significantly reduced workflow rate. Accessing Photoshop from Encore appears to be working flawlessly so far aside from the slow load times. Encore hangs sometimes during video transcoding, repeat the process and it works ok. If I try to import a menu from the library after importing my footage files, Encore hangs trying to import it either at the 50% mark or the 99% mark (it varies even with the same exact menu selected from the library). If I import the menu first and the footage after, then no problems. Also trying to render motion menus after importing footage causes Encore to hang, render before footage import and everything works ok. Interestingly enough, previewing my project in Encore's monitor or preview panels works perfectly even in High quality mode -- in fact it operates quite smoothly in comparison to other apps I have tried. Although those footage files that had missing audio tracks on import obviously played silently, I have yet to experience a hang or crash during a preview or when scrubbing through a timeline in the monitor panel.
The last problem I've seen is with the project cache files. It doesn't always get rid of cache files when stuff is deleted from the project. I was working on one project and surprisingly ran out of disk space. When I tracked it down I found that there were some two dozen copies of a footage file I had repeatedly imported and deleted from the project still sitting in the cache folder. The file was an avi about 2GB so it was taking up some 40 GB of disk space for stuff that was no longer in the project. I tried shutting down Encore and manually deleting all the cache files, and that worked for most of them, but there was one 2GB file that kept reappearing in the cache folder even though it was no longer in the project. The XML file in the cache folder still had references to it in there so I can only assume that was the reason it kept showing up. I eventually had to delete and totally recreate the project from scratch to regain my lost disk space. This included having to sit thru a 6 hour long transcoding session which pissed me off to no end.
Encore CS3 appears on the surface to be a very powerful, feature rich, and approachable app with a simple easy to use interface, but it is awfully bugged in just about every area I have explored and still needs lots and lots of work for it to be really useful. Frankly for me it is pretty damn annoying that I have invested so much money in this suite only to find several of the apps in it (Encore & Premiere in particular) behaving this poorly. In my opinion every single app in the suite exhibits lousy performance whenever you must do anything at all involving the disk from the time you click to start it up until the time you click to close it down. Several of them are just as seriously bugged as Encore too, and being a long time Photoshop v5.5 user I expected much more from Adobe. Even Photoshop is two or three times as slow now (e.g. it takes about 20-30 seconds to simply create an empty 500x500 pixel image file and almost a full minute to load a 30x60 pixel single-layer gif). So far I have attempted to create 6 DVDs using Encore and after 3 weeks of effort have only succeeded in getting one of them onto a final disk -- and that one is kinda limping to work correctly in my DVD player. Three of those projects became so corrupted while working on them that I had to delete them completely and recreate them from scratch, only to find that I still couldn't get them to completion for one reason or another. Seriously disappointing.

Lousy performance

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