Issue was resolved by turning off large-receive-offload on the interfaces that the bridge was built on, on the VM servers
-ethtool_-k_eth2
1 Offload parameters for eth2:
2 rx-checksumming: on
3 tx-checksumming: on
4 scatter-gather: on
5 tcp-segmentation-offload: on
6 udp-fragmentation-offload: off
7 generic-segmentation-offload: on
8 generic-receive-offload: on
9 large-receive-offload: on
- ethtool_-k_eth3
1 Offload parameters for eth3:
2 rx-checksumming: on
3 tx-checksumming: on
4 scatter-gather: on
5 tcp-segmentation-offload: on
6 udp-fragmentation-offload: off
7 generic-segmentation-offload: on
8 generic-receive-offload: on
9 large-receive-offload: on
Note that large receive offload (lro) has been known to be problematic for Oracle VM Server bridged 10gbe bonds/interfaces.
In your case, bridge 0004fb001018a8e exits atop bond1 that utilises interfaces eth[2,3].
Given this to be the case, I'd initially recommend that you disable lro for at least eth[2,3], then re-test network performance.
To disable lro on eth[2,3], perform the following against Oracle VM Servers' relevant interface configuration files:
# for i in 2 3; do echo 'ETHTOOL_OFFLOAD_OPTS="lro off"' >> /etc/sysconfig/network-scripts/ifcfg-eth$i; done
Once in place, shutdown (or migrate off) all guest VMs, restart the Oracle VM Server, startup (or migrate back) guest VMsI was also pointed to a network performace tuning document for OVM 3
http://www.oracle.com/technetwork/server-storage/vm/ovm3-10gbe-perf-1900032.pdf

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E4200 Can't see my network shares after upgrade

I can't see my network shares after upgrade altough everything works fine , the network scanner shows all the atatched devices but in Eplorer when I click Network there is nothing shown on two computers running Win7 64.
I did downgraded the firmware back to .01 but still no network .
Any help ?

After upgrading the firmware did you reset the E4200? After successful firmware upgrade you need to reset the router. It is recommended to reset the router once. Steps to reset the router:
Push the reset button on router for 30 seconds, turn off the router wait for 30 seconds and then power it on. Power light should blink when you perform the reset process.
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I unable to see my network messages after upgrading to ios6 on my iphone4,can anyone help me for this issue?

I unable to see my network messages after upgrading to ios6 on my iphone4,can anyone help me for this issue?

Try to perform SMC and PRAM resets:
http://support.apple.com/kb/HT3964
http://support.apple.com/kb/ht1379
Then try a safe boot:
http://support.apple.com/kb/HT1564
Ciao.

Asset query execution performance after upgrade from 4.6C to ECC 6.0+EHP4

Hi,guys
I am encounted a weird problems about asset query execution performance after upgrade to ECC 6.0.
Our client had migrated sap system from 4.6c to ECC 6.0. We test all transaction code and related stand report and query.
Everything is working normally except this asset depreciation query report. It is created based on ANLP, ANLZ, ANLA, ANLB, ANLC table; there is also some ABAP code for additional field.
This report execution costed about 6 minutes in 4.6C system; however it will take 25 minutes in ECC 6.0 with same selection parameter.
At first, I am trying to find some difference in table index ,structure between 4.6c and ECC 6.0,but there is no difference about it.
i am wondering why the other query reports is running normally but only this report running with too long time execution dump messages even though we do not make any changes for it.
your reply is very appreciated
Regards
Brian

Thanks for your replies.
I check these notes, unfortunately it is different our situation.
Our situation is all standard asset report and query (sq01) is running normally except this query report.
I executed se30 for this query (SQ01) at both 4.6C and ECC 6.0.
I find there is some difference in select sequence logic even though same query without any changes.
I list there for your reference.
4.6C
AQA0FI==========S2============
Open Cursor ANLP                                    38,702 39,329,356 = 39,329,356      34.6     AQA0FI==========S2============   DB     Opens
Fetch ANLP                                         292,177 30,378,351 = 30,378,351      26.7    26.7 AQA0FI==========S2============   DB     OpenS
Select Single ANLC                                  15,012 19,965,172 = 19,965,172      17.5    17.5 AQA0FI==========S2============   DB     OpenS
Select Single ANLA                                  13,721 11,754,305 = 11,754,305      10.3    10.3 AQA0FI==========S2============   DB     OpenS
Select Single ANLZ                                   3,753   3,259,308 = 3,259,308       2.9     2.9 AQA0FI==========S2============   DB     OpenS
Select Single ANLB                                   3,753   3,069,119 = 3,069,119       2.7     2.7 AQA0FI==========S2============   DB     OpenS
ECC 6.0
Perform FUNKTION_AUSFUEHREN     2     358,620,931          355
Perform COMMAND_QSUB     1     358,620,062          68
Call Func. RSAQ_SUBMIT_QUERY_REPORT     1     358,569,656          88
Program AQIWFI==========S2============     2     358,558,488          1,350
Select Single ANLA     160,306     75,576,052     =     75,576,052
Open Cursor ANLP     71,136     42,096,314     =     42,096,314
Select Single ANLC     71,134     38,799,393     =     38,799,393
Select Single ANLB     61,888     26,007,721     =     26,007,721
Select Single ANLZ     61,888     24,072,111     =     24,072,111
Fetch ANLP     234,524     13,510,646     =     13,510,646
Close Cursor ANLP     71,136     2,017,654     =     2,017,654
We can see first open cursor ANLP ,fetch ANLP then select ANLC,ANLA,ANLZ,ANLB at 4.C.
But it changed to first select ANLA,and open cursor ANLP,then select ANLC,ANLB,ANLZ,at last fetch ANLP.
Probably,it is the real reason why it is running long time in ECC 6.0.
Is there any changes for query selcection logic(table join function) in ECC 6.0.

Another "horrible performance after upgrading to Lion" post

Hi,
Sorry for yet another "my computer has horrible performance after upgrading to Lion" post. I did search the forum before posting.
I have a relatively new Macbook Pro, 8 GB RAM, 2.8 MHz Intel i7 CPU. I upgraded from Snow Leopard to Lion, then Lion to 10.7.2.
The first time I upgraded, I no longer had my user account, so restored from Time Machine back to SL. After a month or so, I hoped Apple had fixed the bug, so I redownloaded and reinstalled, and this time the upgrade succeeded.
Ever since the upgrade, my MBP runs like a dog. I get the spinning beach ball constantly, across all range of applications, both Apple and 3rd party. Occasionally it doesn't wake up from sleep (close, open lid) and I have to kick it in the head by holding down the power button.
I've tried booting into the recovery partition, running disk utility, and repairing disk and permissions. I've read elsewhere (Google hit) that doing a completely clean install fixes the performance issues (for those users anyway).
I know this is a fairly generic post, but any advice on how to maximize machine performance under Lion, or should I revert to Snow Leopard? Do I really have to wipe the disk, install fresh, restore all non-OS files (don't accidentally wipe a required OS file), then reapply the 10.7.2 maintenance? Yuck.
Thanks,
Scott

try an SMC reset if you are not seeing any weird spikes in Activity Monitor and you've deduced that none of your third party drivers or apps are interfearing with the way lion works.
Resetting the SMC on portables with a battery you should not remove on your own
Note: Portable computers that have a battery you should not remove on your own include MacBook Pro (Early 2009) and later, all models of MacBook Air, and MacBook (Late 2009).
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
source: http://support.apple.com/kb/ht3964

Can't Login With Network Account After Upgrade To Yosemite Server 4

I've been putting off this troubleshooting for a while now, and after trying everything I could find, decided to post.
- After upgrading my server to Yosemite with Server 4, and my MacBook to Yosemite, I can no longer login with any network accounts.
- I was on clean installs of Mavericks before the upgrade.
- I'm using SSL for the OD, with a GoDaddy cert, the same one that was working on Mavericks.
- I've tried removing the laptop's binding using the Users and Groups preferences dialog, which does not remove the laptop's entry from Open Directory, so I manually deleted the record on the server.
- I then choose to Join again, and it looks as though everything goes through, but I still cannot login with a network account. Also, when rejoining, it does not create a binding on the server.
- If I use the Directory Utility->Services->LDAPv3, and add it that way, entering the FQDN and checking Encrypt..., Use for auth and Use for contacts, it asks me for the directory admin username and password, and does in fact create the binding on the server, but I still cannot login. What's strange about that method, is that it forces the use of the IP address of the server, rather than the FQDN, like I entered it, which would of course have problems, because the certificate's common name is the server's FQDN. It does not allow me to change from using the IP address, graying out that field.
- I've also tried destroying the OD and restoring from archive to no avail.
It looks like many users have hit dead ends with this, with some having success by completely formatting and setting up a new iteration of the server, but I will not be doing that. However, I'll be happy to try any other suggestions.
Thanks for your time,
   -- Mike

     Okay, I've finally resolved the issue, thanks to the Apple Enterprise tech support team. I'm thinking they wouldn't mind if I share this information, but I can't guarantee that this will work on your system or, worse yet, degrade your system further. However, that's fairly unlikely, just make sure you have plenty of backups before you begin any troubleshooting session.
     So I was told to perform the following instructions, which I did, line for line. The part about closing Server.app seems a given, but I'm not sure why they want you to open Server.app at the the end (maybe taken out of context from some other instructions?). I did it anyway, but you should be able to begin testing, on a client workstation, right after rekerberizing is complete. I did, however, need to reboot my client, login as local admin, and then binding would proceed, and network users are able to login again. The engineer also let me know to expect an error, something like the following: "2015-03-11 21:58:38 +0000 Error synchronizing removal of attribute draft-krbPrincipalACL from record 72519e4c-7ac7-15e4-bd42-10adb1944cbc: 77013 result: 16 No such attribute" - this is apparently normal, and did in fact happen in my experience.
So here's the fix:
- Quit Server.app (don’t just close the window)
- On the Open Directory Server, execute these Terminal commands:
- sudo mkdir /var/db/openldap/migration/
- sudo touch /var/db/openldap/migration/.rekerberize
- sudo slapconfig -firstboot
- Open Server.app
And that's it. I did nothing else on my OD server, just logged out. Immediately tried binding on my MacBook client, it failed, I rebooted, tried again, it worked quickly, and I'm able to login with network user accounts again.

Networking Issues after Upgrading to Windows 8.1

I have a Windows 8 desktop PC that is working fine with my network. I can browse the Internet fine using all major browsers etc. After upgrading to Windows 8.1 through the Windows Store I noticed that my wired networking was not working correctly.
The status of the network does not change (i.e. it doesn't change to Limited Connectivity) however browsing to sites in Chrome, IE or Firefox doesn't work as well as Windows 8.
IE11 gives me the error "This page can't be displayed, make sure the web address is correct" and other browsers give a similar error. I normally have to refresh 2-3 times to get a new page to load, sometimes even more. Everything works
fine from a laptop connected at the same time so it isn't an network issue with my provider.
I thought this might be a driver issue with the two on-board Marvell wired network adapters. I wasn't able to rollback the driver to older versions I found on the Internet. I then purchased another network card, Intel Desktop gigabit and the
issue still persists with that adapter. I then tried a USB wireless adapter and the issue still persists using wifi with the wired adapters disabled. I tried a new network cable and no luck either. I also tried resetting the IP stack using
the various netsh commands.
After that I thought I might try reset the Windows 8.1 PC, however that didn't work as I didn't have the restore image available as I upgraded from the Windows Store. I then tried installing Windows 8.1 fresh using a ISO with my Windows 8 key using
some of the recent guides that are available. That all worked but it didn't fix the networking issues.
I re-installed Windows 8.0 and the networking is now fixed and back to working normal again. I'd like to try again but I think I will have the same problems. I can't imagine why this would be a driver issue as I tried 3 different network adapters
and two installs of Windows 8.1. Any ideas what would be the cause of the Windows 8.1 issue?

HI,
Since this issue only occurred in the your desktop PC, and many network adapters you tried, failed, thus I think maybe we should focus on the model of your desktop PC, I suggest you update the BIOS and chipset from the manufacture to improve
the performance of win8.1.
Please also test this issue in safe mode with networking.
Please refer to:
Windows Startup Settings (including safe mode)
http://windows.microsoft.com/en-in/windows-8/windows-startup-settings-including-safe-mode
I’d like to share the following article with you:
Wired and wireless network problems
http://windows.microsoft.com/en-IN/windows/network-connection-problem-help#network-problems=windows-81&v1h=win81tab1&v2h=win7tab1&v3h=winvistatab1&v4h=winxptab1
Regards,
Yolanda
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.
The issue occurs in safe mode as well under Windows 8.1. The motherboard is an Asus P5B Premium, however it works on Windows 8. How would I update the chipset when booted into Windows 8.1? In Device Manager it wasn't allowing me to update
the network drivers as they were newer versions already installed.
Edit: I also installed at Intel Chipset Device software dated 8/8/2013 with version 9.4.0.1026 and the issue still occurs. I am also running the latest BIOS that is available.

NFS disk performance after upgrade to 3.1.1

Hello,
after OVS upgrade from 3.0.3 to 3.1.1 I noticed performance problems on virtual disks placed on nfs repository. Before upgrade, on 3.0.3 I can read from xvda disk at around 60MB/s, after upgrade on 3.1.1 it fall down to around 1.5 MB/s, with 1MB block size:
dd if=/dev/xvda of=/dev/null bs=1024k count=1000
^C106+0 records in
105+0 records out
110100480 bytes (110 MB) copied, 79.0509 seconds, 1.4 MB/s
Repository is on nfs share attached through dedicated 1Gbit/s ethernet network with MTU=8900. The same configuration was used before upgrade. Only change was upgrade from 3.0.3 to 3.1.1.
Test machines are OEL5 with latest UEK kernels, running PVM mode.
Repository on 3.1.1 is mounted without additional NFS options like rsize,wsize,tcp or proto=3:
192.168.100.10:/mnt/nfs_storage_pool on /OVS/Repositories/0004fb0000030000a75ccd9ef5a238c3 type nfs (rw,addr=192.168.100.10)
I don't find a way to change it, but don't know if it may cause performance issues.
Any idea why is with 3.1.1 so high performance decrease from 60 to 1.5 MB/s?
Thanks.

Oracle Support didn't respond to a SR1? Phew… I have noticed very slow performance from Oracle's OVM support regarding SR feedback, but I'd imagine that they respond to a SR1 in time.
But to post something useful, I have just checked the NFS speeds from one of my VM servers to a NFS share hosted on one of my Solaris boxes and the thoughput seems pretty reasonable:
[root@oraclevms01 OrcleVM]# dd if=OVM_EL5U5_X86_PVM_10GB.tar of=/dev/null
3715540+0 records in
3715540+0 records out
1902356480 bytes (1.9 GB) copied, 22.7916 seconds, 83.5 MB/s
I haven't done anything special to either the NFS mount or the NFS export on my Solaris box. All that I could think of is some driver issues, maybe?

Network issue after upgrading to OSX 10.4 from 10.3.9

After upgrading to 10.4 the network seemed to be working fine, internet works, mail works fine, but on the finder network menu I had some problems. Selecting the network menu brings up the menu and selecting network a folder displays named MyNetwork not local. All of the servers and other macs are shown in the next colu mn on the form. I cannot connect to them. Opening the icon for any of the nodes results in the message The alias to the "Node" cannot be opened because the original item cannot be found. This message box provides the option to fix alias, or delete the alias. The fix alias does not accomplish anything and the delete alias gives an error that I do not have the privileges to delete the "Node".
I am fairly new to working with apple (2 weeks.). I am guessing that a file was not moved during the upgrade. I would like to learn how to correct this problem.

Hi Tom, and a warm welcome to the forums!
The fix alias does not accomplish anything...
I've never heard of it working for anybody either!
Try this, in Finder>Preferences>Sidebar, toggle off the Show Network Icon, Find the IP of the iMac in it's Network Pref Pane>TCP/IP tab. In finder, select Go menu>Connect to Servers..., then on the PB, type in afp://ip.of the iMac, like...
afp://10.0.1.5
afp://192.168.1.3
(smb:// if PCs), if it connects then reboot, then toggle that setting back on.
Where are we now?

DB Performance after upgrade.

All,
We have upgraded our application in a test environment which has the production data. The Database was upgraded from oracle 8.1.7.4 to 10.2.0.3 and the application was upgraded to its latest version.
Prior to upgrade,the database was set to RBO and now after upgrade,we moved to CBO.
There are tables with 1m to 25m rows in the database.Some of the tables have upto 500 columns in it. we do have custom columns added to tables
We're seeing severe performance problem with the application .NET interfaces.
Prior to upgrade,the interface takes .065secs to complete a single transaction and now it is taking upto 1.5sec to process.
ADDM/AWR reports shows:
event waits Time(s) %total call time
db file sequential read 1,071,878 5,605 5 94.8 User I/O
CPU time 386 6.5
log file parallel write 849 10 12 .2 System I/O
control file parallel write 3,600 6 2 .1 System I/O
latch free 668 3 5 .1 Other
enabled trace at session level and generated tkprof which has wait events on 'db file sequential read' and 'SQL*net message from client';
OVERALL TOTALS FOR ALL NON-RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
Parse 4 0.08 0.06 0 129 0 0
Execute 4 0.00 0.00 0 0 0 0
Fetch 137 140.50 5827.54 1040645 5864173 0 1978
total 145 140.58 5827.61 1040645 5864302 0 1978
Misses in library cache during parse: 3
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 138 0.00 0.00
SQL*Net message from client 137 1863.66 3030.45
db file sequential read 1040647 0.49 5773.47
latch free 64 0.88 1.65
latch: object queue header operation 1 0.00 0.00
OVERALL TOTALS FOR ALL RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
Parse 43 0.08 0.09 0 0 0 0
Execute 193 0.10 0.12 2 273 0 0
Fetch 365 0.08 0.15 0 691 0 656
total 601 0.26 0.37 2 964 0 656
Misses in library cache during parse: 33
Misses in library cache during execute: 27
We have found that some of the custom columns being used by the application doesn't have indexes and we see better results after adding a column.
But, i know that we cannot go ahead and add index on each custom column which isn't a good approach.
Appreciate your inputs and thoughts.
Cheers.

Can you explain a bit about what you mean by "application was upgraded to its latest version"? If you're talking about a packaged application, your vendor probably has a pile of documentation that explains how to configure your database in a way that works well for their particular application. There may well be a variety of configuration settings that the vendor recommends or a variety of changes they recommend to the default 10g statistics gathering process.
There may also be application-related reasons for performance to have decreased (i.e. application screens or SQL queries may be doing more work in newer versions than they were doing in older versions). The combination of a new application version and a new database version may also increase hardware requirements-- if you're running applications on the same servers you were using in 2000 when 8.1.7.4 was the new kid on the block, those servers may be overtaxed today.
Other than that, I'd start comparing query plan changes between test & prod. If you can figure out what in the database and/or object statistics is causing the CBO to choose slower plans, you may be able to tweak your statistics gathering process (or potentially even an initialization parameter) to give Oracle the information it needs.
Justin

Does any one experience having slow performance after upgrading to lion? (I'm using an iMac early 2008 with 4gb memory)

I'm having a problem on my iMac early 2008 (2.4GHz Core 2 Duo 4gb SDRAM) after upgrading to Mac OS X Lion.
The animation such as mission control and full screen and especially, launch pad performs really slow.
Sometimes, mission control doesn't even show the animation.
This is terrible and I want Apple to fix these problems or otherwise this is just making my mac useless.
Does anyone experience having similar problem?

thanks for the reply!
I've checked the activity monitor but nothing was taking up the space expect for Flash Player (Safari Internet plug-in, which takes up 29% of CPU)
here's my screenshot. can you see any problems?
and here's another

Best way to avoid requirement for network ACL after upgrade to 11g

Hi All,
After upgrade from 10g to 11g, I found Network ACLs required to make code using SYS.UTL_SMTP to work. Otherwise there is an error: ORA-24247: network access denied by access control list (ACL).
Do you know an elegant way to get rid of ACLs? I mean to open the network for all user's code, like it was on 10g, instead of checking what is actually needing it and doing specific ACLs for users. Database parameter disabling ACL restrictions seems natural option here, but it looks like Oracle not introduced such.
Kind Regards,
Artzaw

I don't know of a way to disable ACLs, no. I'd imagine that there probably is a hidden parameter that Oracle Support could direct you to. I'm hard-pressed to imagine why you'd really want to disable that functionality, though.
You can create an ACL that allows access to an arbitrary host on an arbitrary port (host => '*.*.*.*' and with NULL lower_port and upper_port values).
Justin

Lost 5 GHz wireless network access after upgrading to Windows 10

Hello, Lost the ability to connect to (and see) my 5GHz wireless network after upgrading Windows 8.1 to Windows 10 on my Yoga 2 13. I have tried to update the wireless driver to the latest version. The WiFi card is the original Wireless-N 7260 that was installed when I bought the computer. I know for a fact that I was able to use 5GHz networks Before as I can see my saved networks and I can clearly see that I have my 5GHz network in that list. Please advice, Patrik

Good to see it fixed itself. One setting that can block Windows 10 from seeing the WD My Cloud and other devices/computers on the network is the "network location type". During the upgrade or install to Windows 10 one may not quite understand what they are reading when, or if, asked which kind of network they are connecting to. If they select "no" on that particular screen (example below), Windows 10 will block access to certain local devices possibly including the WD My Cloud. The following link gives a general overview of the issue and ways to fix it if one made the wrong selection: Change network location type (Public or Private) in Windows 10

Performance after Upgrade to 10.2.0.4

Hi
Days ago, I did an upgrade on my database. The old version was 10.2.0.1 and the new version is 10.2.0.4. The result was successful however a etl process that before to upgrade took 2 minutes for complete and after upgrade it take 20 hours (without exaggeration). I noticed that the optimizer_features_enable parameter changed to 10.2.0.4, then I changed it to 10.2.0.1 however the performance for the process does not improve. Any suggestion please.
Thanks for your help.
beto

beto wrote:
Hi
Days ago, I did an upgrade on my database. The old version was 10.2.0.1 and the new version is 10.2.0.4. The result was successful however a etl process that before to upgrade took 2 minutes for complete and after upgrade it take 20 hours (without exaggeration). I noticed that the optimizer_features_enable parameter changed to 10.2.0.4, then I changed it to 10.2.0.1 however the performance for the process does not improve. Any suggestion please.
Thanks for your help.
betoThread: HOW TO: Post a SQL statement tuning request - template posting
HOW TO: Post a SQL statement tuning request - template posting

Wired ethernet network disappears after upgrading to Yosemite

I am a lone iMac on a Windows network, but have connected through ethernet without a problem for years. Since upgrading to Yosemite, however, my network has disappeared. My ethernet is connected, my IP address is the same as before (assigned by DHCP) and I have made no changes to any other settings. The only difference now is that my mapped network drives cannot connect and in Finder, when I click on NETWORK and SERVERS, there is nothing there.
The company IT guy is a Certified Microsoft dude and he swears nothing has been changed in the network. It must be the upgrade.
What has Yosemite changed? (The Firewall is off.)

Found a fix
When trying to fix a wake failure, I simultanuously fixed the issue with network drives. It is connected to the Preferences.
Here is how I could solve the problems:
Press command+shift+c - > Macintosh HD - > Library - > Preferences -> Drag SystemConfiguration on desktop, it's going to make a copy of it (May ask for password, then delete it from the Preferences (which is the initial folder). Shut down, then do a PRAM Reset. If you don't know how to do that :
After you shut down the computer, locate the option, command, P and R from your keyboard. Press the power button to turn it on and quickly press all four buttons before hearing the first 'power up sound'. Keep them pressend until you hear a second 'power up sound'.

Network performance after upgrade to 3.1.1

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