System performance degrades after server migration ???

Hi Friends,
System performance degrades after we migrate our BW 3.5 Server (Production) from UK to Germany.
for details :
1. Data is coming to Informatica server from Informatica its going to POSDM Server (Point of Sales Data Management) from POSDM we are running pipes and data is coming to BW (Delta Queqe)
so before Server Migration it was taking 2 Hrs to load 4 Million Records
After Server Migration it is taking 4 Hrs.
Please help out to find the reason for this.
Note : Server Ram , Hard Disk , Speed is same on both Servers
Thanks
Asim

Note : Server Ram , Hard Disk , Speed is same on both Servers
Are you cahnge any application or database parameter (the OS and all patch'es are the same?)
How you doing migration? Very low information... Are you check the network configuration are the same( for example check the network speed 1G or 100MB).
Are you trying to analyse the St03N and St04 t-codes?
Regards.

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Hi Suraj,
<speculation>
You switched filesystemio_options to setall from none, so, the most likely reason for performance degradation after switching to setall is the implementation of directio. Direct I/O will skip the filesystem buffer cache, and and allow Oracle to read directly from disk to the database buffer cache. However, on a system where direct I/O is not implemented, which is what you had until you recently messed with that parameter, it's likely that you had an undersized database buffer cache, but that was ok, because many (most) of the physical I/Os your database was doing, were actually being serviced by the O/S filesystem buffer cache. But, you introduced direct I/O, and wiped out the ability of the O/S to service any physical I/Os from filesystem buffer cache. This means that every cache miss on the database buffer cache, turns into a real, physical, spin-the-disk, move-the-drive-head, physical I/O. And, you are suffering the performance consequences.
</speculation>
Ok, end of speculation. Now, assuming that what I've outlined above is actually going on, what to do? Why is direct I/O lower performing than buffered, non-direct I/O? Shouldn't it's performance be superior?
Well, when you have an established system that's using buffered I/O, and you switch to direct I/O, you almost always will have to increase the size of the database buffer cache. The problem is that you took a huge chunk of memory away from the the O/S, that it was using to buffer your I/Os and avoid physical I/O. So, now, you need to make up for it, by increasing the size of the database buffer cache. You can do this, without buying more memory for the box, because the O/S is no longer going to need to use so much memory for filesystem buffers.
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Hi,
We performed an OEL4.7 to OEL4.8 migration for a vm; we did not upgrade the dom0.
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vm:
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HVM
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Looking at your kernel parameters... is there some typo? I think the values don't make much sense, e.g. shared memory segment 4 TB -> 12 GB? Either way this looks very strange to me. Same for fs.file-max, etc. I'm not sure if setting shared memory segment to more than 4 GB is actually supported. Where did you get these parameters?
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Edited by: Markus Waldorf on Jul 23, 2010 5:58 PM
Just noticed your kernel parameter are 4.8 <- 4.7. Anyway, I wonder what value will actually be used if you set shared memory to 4 TB, but you can probably verify with
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ECP redirects to OWA in Exchange 2013
http://social.technet.microsoft.com/Forums/en-US/34ed5347-90f9-4ab7-91c3-9665f8ace432/ecp-redirects-to-owa-in-exchange-2013?forum=exchangesvradminlegacy
Hope this can be helpful to you.
Best regards,
If you have feedback for TechNet Subscriber Support, contact
[email protected]
Amy Wang
TechNet Community Support

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The view from the command line in Terminal.app is the canonical source for the files on a system, so I'd confirm that the path matches your expectations — you can drag file or folder icons from the Finder window directly into Terminal to get the path visible — enter a # to prevent accidental execution, then drag the file or folder icon right to the input line in Terminal — and confirm you're where you think you are.
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Oct 15 22:02:45 localhost kernel: [ 243.616368] opera[16250]: segfault at 28 ip 00007fc94a0764ce sp 00007fffff8a1630 error 4 in fglrx-libGL.so.1.2[fc94a03f000+bf000]
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[2012-10-14 17:41] Running 'pacman -Syu'
[2012-10-14 17:41] synchronizing package lists
[2012-10-14 17:41] starting full system upgrade
[2012-10-14 17:43] upgraded libtiff (4.0.2-1 -> 4.0.3-1)
[2012-10-14 17:43] upgraded openexr (1.7.0-2 -> 1.7.1-1)
[2012-10-14 17:43] upgraded xorg-server-common (1.12.4-1 -> 1.13.0-2)
[2012-10-14 17:43] warning: /etc/group installed as /etc/group.pacnew
[2012-10-14 17:43] warning: /etc/passwd installed as /etc/passwd.pacnew
[2012-10-14 17:43] warning: /etc/gshadow installed as /etc/gshadow.pacnew
[2012-10-14 17:43] warning: directory permissions differ on srv/http/
filesystem: 775 package: 755
[2012-10-14 17:43] upgraded filesystem (2012.8-1 -> 2012.10-1)
[2012-10-14 17:43] upgraded dbus-core (1.6.4-1 -> 1.6.8-1)
[2012-10-14 17:43] upgraded util-linux (2.22-6 -> 2.22-7)
[2012-10-14 17:43] upgraded systemd (193-1 -> 194-3)
[2012-10-14 17:43] upgraded mtdev (1.1.2-1 -> 1.1.3-1)
[2012-10-14 17:43] upgraded xf86-input-evdev (2.7.3-1 -> 2.7.3-2)
[2012-10-14 17:43] upgraded xorg-server (1.12.4-1 -> 1.13.0-2)
[2012-10-14 17:43] upgraded lib32-gcc-libs (4.7.1-6 -> 4.7.2-1)
[2012-10-14 17:43] upgraded gcc-libs-multilib (4.7.1-6 -> 4.7.2-1)
[2012-10-14 17:43] upgraded catalyst-utils (12.8-1 -> 12.9-0.1)
[2012-10-14 17:43] installed glu (9.0.0-1)
[2012-10-14 17:43] upgraded glew (1.8.0-1 -> 1.8.0-2)
[2012-10-14 17:43] upgraded freeglut (2.8.0-1 -> 2.8.0-2)
[2012-10-14 17:43] upgraded jasper (1.900.1-7 -> 1.900.1-8)
[2012-10-14 17:43] upgraded openimageio (1.0.8-1 -> 1.0.9-3)
[2012-10-14 17:43] upgraded jack (0.121.3-6 -> 0.121.3-7)
[2012-10-14 17:43] installed opencolorio (1.0.7-1)
[2012-10-14 17:43] upgraded blender (4:2.64-3 -> 5:2.64a-1)
[2012-10-14 17:43] upgraded cairo (1.12.2-2 -> 1.12.2-3)
[2012-10-14 17:43] upgraded xcb-proto (1.7.1-1 -> 1.8-1)
[2012-10-14 17:43] upgraded libxcb (1.8.1-1 -> 1.9-1)
[2012-10-14 17:43] upgraded mesa (8.0.4-3 -> 9.0-1)
[2012-10-14 17:43] upgraded cinelerra-cv (1:2.2-7 -> 1:2.2-9)
[2012-10-14 17:43] upgraded curl (7.27.0-1 -> 7.28.0-1)
[2012-10-14 17:43] upgraded dbus (1.6.4-1 -> 1.6.8-1)
[2012-10-14 17:43] upgraded flashplugin (11.2.202.238-1 -> 11.2.202.243-1)
[2012-10-14 17:43] upgraded gcc-multilib (4.7.1-6 -> 4.7.2-1)
[2012-10-14 17:43] upgraded gegl (0.2.0-3 -> 0.2.0-4)
[2012-10-14 17:43] upgraded git (1.7.12.2-1 -> 1.7.12.3-1)
[2012-10-14 17:43] upgraded gnutls (3.1.2-1 -> 3.1.3-1)
[2012-10-14 17:43] upgraded gstreamer0.10-bad (0.10.23-2 -> 0.10.23-3)
[2012-10-14 17:43] installed opus (1.0.1-2)
[2012-10-14 17:43] upgraded gstreamer0.10-bad-plugins (0.10.23-2 -> 0.10.23-3)
[2012-10-14 17:43] upgraded hdparm (9.39-1 -> 9.42-1)
[2012-10-14 17:43] upgraded libltdl (2.4.2-6 -> 2.4.2-7)
[2012-10-14 17:43] upgraded imagemagick (6.7.9.8-1 -> 6.7.9.8-2)
[2012-10-14 17:43] upgraded sysvinit-tools (2.88-8 -> 2.88-9)
[2012-10-14 17:43] warning: /etc/rc.conf installed as /etc/rc.conf.pacnew
[2012-10-14 17:43] ----
[2012-10-14 17:43] > systemd no longer reads MODULES from rc.conf.
[2012-10-14 17:43] ----
[2012-10-14 17:43] upgraded initscripts (2012.09.1-1 -> 2012.10.1-1)
[2012-10-14 17:43] upgraded iputils (20101006-4 -> 20101006-7)
[2012-10-14 17:43] upgraded khrplatform-devel (8.0.4-3 -> 9.0-1)
[2012-10-14 17:43] upgraded lib32-catalyst-utils (12.8-2 -> 12.9-0.1)
[2012-10-14 17:43] upgraded lib32-dbus-core (1.6.4-1 -> 1.6.8-1)
[2012-10-14 17:43] upgraded lib32-libltdl (2.4.2-6 -> 2.4.2-7)
[2012-10-14 17:43] upgraded lib32-libtiff (4.0.2-1 -> 4.0.3-1)
[2012-10-14 17:43] upgraded lib32-libxcb (1.8.1-2 -> 1.9-1)
[2012-10-14 17:43] installed lib32-libxxf86vm (1.1.2-1)
[2012-10-14 17:43] upgraded lib32-mesa (8.0.4-4 -> 9.0-1)
[2012-10-14 17:43] upgraded libbluray (0.2.2-1 -> 0.2.3-1)
[2012-10-14 17:43] upgraded libdmapsharing (2.9.12-2 -> 2.9.15-1)
[2012-10-14 17:43] upgraded libglapi (8.0.4-3 -> 9.0-1)
[2012-10-14 17:43] upgraded libgbm (8.0.4-3 -> 9.0-1)
[2012-10-14 17:43] upgraded libegl (8.0.4-3 -> 9.0-1)
[2012-10-14 17:43] upgraded libgles (8.0.4-3 -> 9.0-1)
[2012-10-14 17:43] upgraded libldap (2.4.32-1 -> 2.4.33-1)
[2012-10-14 17:43] upgraded libreoffice-en-US (3.6.1-4 -> 3.6.2-2)
[2012-10-14 17:44] upgraded libreoffice-common (3.6.1-4 -> 3.6.2-2)
[2012-10-14 17:44] upgraded libreoffice-calc (3.6.1-4 -> 3.6.2-2)
[2012-10-14 17:44] upgraded libreoffice-impress (3.6.1-4 -> 3.6.2-2)
[2012-10-14 17:44] upgraded libreoffice-writer (3.6.1-4 -> 3.6.2-2)
[2012-10-14 17:44] upgraded libshout (1:2.3.0-1 -> 1:2.3.1-1)
[2012-10-14 17:44] upgraded libtool-multilib (2.4.2-6 -> 2.4.2-7)
[2012-10-14 17:44] upgraded libusbx (1.0.12-2 -> 1.0.14-1)
[2012-10-14 17:44] upgraded libva (1.1.0-1 -> 1.1.0-2)
[2012-10-14 17:44] >>> Updating module dependencies. Please wait ...
[2012-10-14 17:44] >>> Generating initial ramdisk, using mkinitcpio. Please wait...
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[2012-10-14 17:44] -> -k /boot/vmlinuz-linux -c /etc/mkinitcpio.conf -g /boot/initramfs-linux.img
[2012-10-14 17:44] ==> Starting build: 3.5.6-1-ARCH
[2012-10-14 17:44] -> Running build hook: [base]
[2012-10-14 17:44] -> Running build hook: [udev]
[2012-10-14 17:44] -> Running build hook: [autodetect]
[2012-10-14 17:44] -> Running build hook: [pata]
[2012-10-14 17:44] -> Running build hook: [scsi]
[2012-10-14 17:44] -> Running build hook: [sata]
[2012-10-14 17:44] -> Running build hook: [filesystems]
[2012-10-14 17:44] -> Running build hook: [usbinput]
[2012-10-14 17:44] -> Running build hook: [fsck]
[2012-10-14 17:44] ==> Generating module dependencies
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[2012-10-14 17:44] ==> Image generation successful
[2012-10-14 17:44] ==> Building image from preset: 'fallback'
[2012-10-14 17:44] -> -k /boot/vmlinuz-linux -c /etc/mkinitcpio.conf -g /boot/initramfs-linux-fallback.img -S autodetect
[2012-10-14 17:44] ==> Starting build: 3.5.6-1-ARCH
[2012-10-14 17:44] -> Running build hook: [base]
[2012-10-14 17:44] -> Running build hook: [udev]
[2012-10-14 17:44] -> Running build hook: [pata]
[2012-10-14 17:44] -> Running build hook: [scsi]
[2012-10-14 17:44] -> Running build hook: [sata]
[2012-10-14 17:44] -> Running build hook: [filesystems]
[2012-10-14 17:44] -> Running build hook: [usbinput]
[2012-10-14 17:44] -> Running build hook: [fsck]
[2012-10-14 17:44] ==> Generating module dependencies
[2012-10-14 17:44] ==> Creating gzip initcpio image: /boot/initramfs-linux-fallback.img
[2012-10-14 17:44] ==> Image generation successful
[2012-10-14 17:44] upgraded linux (3.5.4-1 -> 3.5.6-1)
[2012-10-14 17:44] upgraded linux-api-headers (3.5.1-1 -> 3.5.5-1)
[2012-10-14 17:44] upgraded lirc-utils (1:0.9.0-28 -> 1:0.9.0-30)
[2012-10-14 17:44] upgraded net-snmp (5.7.1-3 -> 5.7.1-4)
[2012-10-14 17:44] upgraded nodejs (0.8.11-1 -> 0.8.12-1)
[2012-10-14 17:44] upgraded xine-lib (1.2.2-1 -> 1.2.2-2)
[2012-10-14 17:44] upgraded opencv (2.4.2-2 -> 2.4.2-4)
[2012-10-14 17:44] upgraded rsync (3.0.9-4 -> 3.0.9-5)
[2012-10-14 17:44] upgraded run-parts (4.3.2-1 -> 4.3.4-1)
[2012-10-14 17:44] upgraded smpeg (0.4.4-6 -> 0.4.4-7)
[2012-10-14 17:44] upgraded sqlite (3.7.14-1 -> 3.7.14.1-1)
[2012-10-14 17:44] upgraded sysvinit (2.88-8 -> 2.88-9)
[2012-10-14 17:44] In order to use the new version, reload all virtualbox modules manually.
[2012-10-14 17:44] upgraded virtualbox-host-modules (4.2.0-2 -> 4.2.0-5)
[2012-10-14 17:44] installed lib32-glu (9.0.0-1)
[2012-10-14 17:44] upgraded wine (1.5.14-1 -> 1.5.15-1)
[2012-10-14 17:44] upgraded xbmc (11.0-6 -> 11.0-8)
[2012-10-14 17:44] upgraded xf86-input-wacom (0.17.0-1 -> 0.17.0-2)
[2012-10-14 17:44] upgraded xorg-server-xephyr (1.12.4-1 -> 1.13.0-2)
[2012-10-14 17:44] upgraded xscreensaver (5.19-1 -> 5.19-2)
[2012-10-14 17:44] upgraded xterm (282-1 -> 283-1)
Finally, here is a list of the packages that were removed in the pacman invocation that removed linux-headers.
[2012-10-07 11:28] Running 'pacman -R torus-trooper'
[2012-10-07 11:28] removed torus-trooper (0.22-4)
[2012-10-07 11:28] Running 'pacman -R freealut lib32-alsa-lib lib32-curl lib32-libglapi lib32-libidn lib32-libxxf86vm lib32-nvidia-cg-toolkit lib32-sdl libbulletml linux-headers mono xclip'
[2012-10-07 11:28] removed xclip (0.12-3)
[2012-10-07 11:28] removed mono (2.10.8-1)
[2012-10-07 11:28] removed linux-headers (3.5.4-1)
[2012-10-07 11:28] removed libbulletml (0.0.6-4)
[2012-10-07 11:28] removed lib32-sdl (1.2.15-3)
[2012-10-07 11:28] removed lib32-nvidia-cg-toolkit (3.1-2)
[2012-10-07 11:28] removed lib32-libxxf86vm (1.1.2-1)
[2012-10-07 11:28] removed lib32-libidn (1.25-1)
[2012-10-07 11:28] removed lib32-libglapi (8.0.4-4)
[2012-10-07 11:28] removed lib32-curl (7.27.0-1)
[2012-10-07 11:28] removed lib32-alsa-lib (1.0.26-1)
[2012-10-07 11:28] removed freealut (1.1.0-4)
[2012-10-07 11:28] Running 'pacman -R lib32-libssh2 libgdiplus'
[2012-10-07 11:28] removed libgdiplus (2.10-2)
[2012-10-07 11:28] removed lib32-libssh2 (1.4.2-1)
The system in question is a Dell XPS, with an i7 processor and an ATI Radeon HD5700 series graphics card. I'm using slim and awesome wm, and the arch install is now seven months old.
I know that we're supposed to post entire logs, but I'm not sure which logs are actually relevant, and my logs are quite large. I can definitely provide more information, if it's helpful. I've done some looking around on the wiki, and on google in general. I haven't found anything useful, but it could always be that I'm just phrasing my searches poorly.
Thanks!

I reinstalled the whole system. As said, I couldn't even go to tty. I know using installation disk I could have recovered it, but I decided to reinstall.

Temporary performance degradation after inserting many records

I run into the following performance problem:
I'm accessing Oracle from Java (JDBC).
2 tables:
DISPLAYS
PAYLOADINFO
PAYLOADINFO contains a foreign key to DISPLAYS.
A process writes 100000 records into PAYLOADINFO, in a single transaction. The transaction is committed. Each of the records places the SAME id in the foreign key (ie. all payload-info originates from the same display).
After commit succeeds, a query (on other tables referencing the DISPLAY table) is launched.
1) With the foreign key, queries become VERY slow for a while. After this 'while', queries get back up to speed.
2) with NO foreign key linking the two tables, subsequent queries keep their original performance.
I read somewhere that this could be caused by unbalanced indexing ? Is this the case ? Where should I look for a solution ?
best regards,
Geert

Can you define "a while"? Are we talking minutes? hours? days?
When are statistics gathered in the database?
Do you see a change in the query plan? Or do you see other tasks consuming system resources?
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

Significant performance degradation after TM restore

I recently installed a new internal HD in my iMac. While everything seems to work from a hardware standpoint, the performance has significantly degraded. Specifically, the screen locks up from time to time for several seconds.
I think I have isolated this problem to one user profile and it seems to occur when mail or iphoto are running (which makes me suspect something to do with the synching of one of the ipods or iphone associated with the machine.
I initially restored the entire system from a TM backup - once with the most recent backup and a second time with a slightly earlier back up but had the same performance drag. I then reinstalled Leopard and most of my programs with relevant updates. I didn't experience any hang ups (freezing screen, colorful spinning circle, etc.) until I restored the user accounts from TM.
It seems that the hang ups are only happening on one account (mine) as I haven't been able to replicate the problem with the other profiles (which do not have mail installed and are not associated with any ipod or iphone).
Any ideas about what may be "corrupting" my profile. I have run verify disk permissions and verify disk and no problems were reported (I even ran repair disk permissions for grins with no result).
Thanks and sorry for the long post.

Kaubon,
There is a difference between oracle 9i and 10g database.
If you are using optimizer_features_enable="9.2.0.8" to revert back to the old behavior then you are not utilizing the updated feature of 10g. You are making 10g to follow 9i behavior.
It is just like buying a new car and damaging it to get the feel of your old car.
We had the similar problem, but we fine tune all our queries according to 10g. Main problem was use of rules. You need to either remove those rules or modify those rules.
There are few good documents of 10g performance on metalink. You can refer to that.
All the best.
Soham khot
http://oracleappshr.blogspot.com

System performance degrades after server migration ???

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