Disabling the direct paths of ESX and VM guests
Hi all
Hope that this question has not been asked before. (I did a search but could not find anything specific).
I'm looking for reassurance about a proposed change, we seek to bring to our system.
We need to upgrade one of our Brocade switches that will cause some interruptions in service of the said switch. (We have two bucks and each ESX host has 2 x single port hba with a connection to each Brocade card)
Literature, that I read, it seems to me that I have to force data store traffic over the other switch to allow me to remove the Brocade for its upgrade.
-Proposed method for each data store attached to a host, I intend to disable the relevant path and force a failover to the remaining path that leads to the secondary Brocade.
I have a few questions about this approach.
(1) I guess that manually disabling a path should result in no time downtime or loss of connectivity failover occurs in an operational environment? (We will off hours, but it's a 24/7 environment).
(2) Although the majority of our servers use VMFS, some use LUN RAW. These servers would encounter difficulties if I force a failover situation through a path of disabling?
Thanks in advance!
Hello
Welcome to the community
Hope that this question has not been asked before. (I did a search but could not find anything specific).
It was asked before several times, in any case
(1) I guess that manually disabling a path should result in no time downtime or loss of connectivity failover occurs in an operational environment? (We will off hours, but it's a 24/7 environment).
(2) Although the majority of our servers use VMFS, some use LUN RAW. These servers would encounter difficulties if I force a failover situation through a path of disabling?
- OK, even if you remove a cable adapter HBA, ESX would shift all traffic to the next available path. Don't forget that you have the vmware tools installed in the virtual machine
- No problem with RAW LUN, it would behave like VMFS
Tags: VMware
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Thanks & Rgds,*** 2013-01-04 13:46:11.354 WAIT #1: nam='SQL*Net message from client' ela= 10384792 driver id=1650815232 #bytes=1 p3=0 obj#=-1 tim=1357278371354075 CLOSE #1:c=0,e=3,dep=0,type=3,tim=1357278371354152 ===================== PARSING IN CURSOR #1 len=113 dep=0 uid=0 oct=3 lid=0 tim=1357278371363427 hv=138414473 ad='c7bd8d00' sqlid='72tvt5h4402c9' select "NUMBER" num from smprd.probsummarym1 where flag ='f' and affected_item = 'PAUSRWVP39486' order by num asc END OF STMT PARSE #1:c=0,e=9251,p=0,cr=0,cu=0,mis=0,r=0,dep=0,og=1,plh=1127048874,tim=1357278371363426 EXEC #1:c=0,e=63178,p=0,cr=0,cu=0,mis=0,r=0,dep=0,og=1,plh=1127048874,tim=1357278371426691 WAIT #1: nam='SQL*Net message to client' ela= 2 driver id=1650815232 #bytes=1 p3=0 obj#=-1 tim=1357278371426766 WAIT #1: nam='Disk file operations I/O' ela= 1133 FileOperation=2 fileno=55 filetype=2 obj#=93574 tim=1357278371428069 WAIT #1: nam='db file sequential read' ela= 51 file#=55 block#=460234 blocks=1 obj#=93574 tim=1357278371428158 WAIT #1: nam='direct path read' ela= 31 file number=55 first dba=460235 block cnt=5 obj#=93574 tim=1357278371428956 WAIT #1: nam='direct path read' ela= 47 file number=55 first dba=136288 block cnt=8 obj#=93574 tim=1357278371429099 WAIT #1: nam='direct path read' ela= 80 file number=55 first dba=136297 block cnt=15 obj#=93574 tim=1357278371438529 WAIT #1: nam='direct path read' ela= 62 file number=55 first dba=136849 block cnt=15 obj#=93574 tim=1357278371438653 WAIT #1: nam='direct path read' ela= 17 file number=55 first dba=136881 block cnt=7 obj#=93574 tim=1357278371438750 WAIT #1: nam='direct path read' ela= 35 file number=55 first dba=136896 block cnt=8 obj#=93574 tim=1357278371438855 WAIT #1: nam='direct path read' ela= 22 file number=55 first dba=136913 block cnt=7 obj#=93574 tim=1357278371438936 WAIT #1: nam='direct path read' ela= 19 file number=55 first dba=137120 block cnt=8 obj#=93574 tim=1357278371439029 WAIT #1: nam='direct path read' ela= 36 file number=55 first dba=137145 block cnt=7 obj#=93574 tim=1357278371439114 WAIT #1: nam='direct path read' ela= 18 file number=55 first dba=137192 block cnt=8 obj#=93574 tim=1357278371439193 WAIT #1: nam='direct path read' ela= 16 file number=55 first dba=137201 block cnt=7 obj#=93574 tim=1357278371439252 WAIT #1: nam='direct path read' ela= 17 file number=55 first dba=137600 block cnt=8 obj#=93574 tim=1357278371439313 WAIT #1: nam='direct path read' ela= 15 file number=55 first dba=137625 block cnt=7 obj#=93574 tim=1357278371439369 WAIT #1: nam='direct path read' ela= 22 file number=55 first dba=137640 block cnt=8 obj#=93574 tim=1357278371439435 WAIT #1: nam='direct path read' ela= 702 file number=55 first dba=801026 block cnt=126 obj#=93574 tim=1357278371440188 WAIT #1: nam='direct path read' ela= 1511 file number=55 first dba=801154 block cnt=126 obj#=93574 tim=1357278371441763 WAIT #1: nam='direct path read' ela= 263 file number=55 first dba=801282 block cnt=126 obj#=93574 tim=1357278371442547 WAIT #1: nam='direct path read' ela= 259 file number=55 first dba=801410 block cnt=126 obj#=93574 tim=1357278371443315 WAIT #1: nam='direct path read' ela= 294 file number=55 first dba=801538 block cnt=126 obj#=93574 tim=1357278371444099 WAIT #1: nam='direct path read' ela= 247 file number=55 first dba=801666 block cnt=126 obj#=93574 tim=1357278371444843 WAIT #1: nam='direct path read' ela= 266 file number=55 first dba=801794 block cnt=126 obj#=93574 tim=1357278371445619
Vijay911786 wrote:
Direct path readings can be done on the series tablescans in your version of Oracle, but if you have chained rows in the table and then Oracle can read read read the beginning of the line in the path directly, but must make a single block in the cache (the db file sequential read) to get the next part of the line.
It is possible that your production system has a lot of chained rows, while your test system is not. As corroboration (though not convincing) indicator of what you might notice that if you take (reads disc - db file sequential reads) - who might get you close to all the blocks direct read - the numbers are very similar.
I'm not 100% convinced that it's the answer for the difference in behavior, but worth a visit. If you can force and indexed access path in the table, do something like "select / * + index (use {pk}) * / max table (last_column_in_table)" and check the number of "table fetch continued lines" could be close to the number of db file sequential reads you. (There are other options for the counting of the chained rows that could be faster).
Concerning
Jonathan Lewis -
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Path used: Direct Insert option in effect for this table: APPEND
Trigger DEV."R_TM_BK_BORROWER" was disabled before the load.
DEV."R_TM_BK_BORROWER" was re-enabled.
The following index(es) on table "YO"."TM_BK_BORROWER" were processed:
index DEV.I_NK_TM_BK_BORR_1 loaded successfully with 1554238 keys
index DEV.I_NK_TM_BK_BORR_2 loaded successfully with 1554238 keys
index DEV.I_NK_TM_BK_BORR_3 loaded successfully with 1554238 keys
index DEV.I_NK_TM_BK_BORR_31 loaded successfully with 1554238 keys
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Column array rows : 5000
Stream buffer bytes: 256000
Read buffer bytes: 1048576
Total logical records skipped: 1
Total logical records read: 1554241
Total logical records rejected: 48
Total logical records discarded: 2
Total stream buffers loaded by SQL*Loader main thread: 7695
Total stream buffers loaded by SQL*Loader load thread: 0
So, I can still see the newspaper sqlldr that all data flow buffers loaded by the main thread and load wire is not always used.
SQL * Loader load wire do not unload the SQL * Loader main thread. If the load wire supports the current stream buffers, then it allows the primary thread to build the buffer to the next stream while the thread of load load the current stream to the server. We have a server CPU 24.
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How to disable the directional floating bar at the bottom of the page
The directional floating bar is annoying and not useful to me. I want to be able to get rid of it.
You can use this extension to hide the ToolTip that indicates the URL for a link on hover and other data that was previously in the status bar.
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Original title: Windows Live Hotmail only opens a new window links e-mail composition!
I recently put my Windows Live Hotmail account to my default e-mail client in Internet Explorer 8 on my Windows XP SP3 System. Unfortunately, whenever I click on a link to e-mail on a Web page to open a new message, Hotmail tells me, "Sorry, there seems to be a problem with Hotmail right now", and a new/compose message window does not open. I disabled the HTTPS option in Hotmail, which fixed the problem. However, when I went to do a manual update of Windows, I am nailed with a Trojan horse! Apparently, the Windows Firewall and Microsoft Security Essentials have been affected by turning off HTTPS in Hotmail! It's 2012, and it's terribly disappointing that Microsoft only has not ironed out all the imperfections in these services now. If anyone can give me a solution (in simple terms), I would appreciate it!
Thank you
Ryan
Hi Ryan,
1. you receive messages or error codes when you access Windows updates?
2. what happens exactly with the Windows Firewall and Microsoft Security Essentials?
About the update of Windows, the Windows Firewall and Microsoft Security Essentials issues, you may try to launch the FixIt and see if it helps:
Method 1:
Resolve security issues to protect and secure Windows automatically
The problem with Microsoft Windows Update is not working
Method 2:
You can also refer to article and perform a full scan on your computer by using the Microsoft Safety Scanner.
Note: The data files that are infected must be cleaned only by removing the file completely, which means that there is a risk of data loss.
On the Windows Live Hotmail account, you can publish your request in instances of Windows Live to get help:
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Dear all,
I have a HP zbook studio G3 laptop. I want to go to the Nvidia graphics card permanently. I tried to disable graphics integrated in the Device Manager, uninstall the driver and allowing even the nvidea card chart of all profiles in the parameter 3D tap in the Nvidia configuration software. Non of them seems to work as the integrated graph is always in action and simple games could not be executed. I always keep in the option to high-performance mode, and the laptop is still connected. Should I manipulate the bios setup?
Thanks in advance,
Bezzi
I have the version non-studio of Zbook 15 G3 which has removable video card. I added the video card after purchase and found that it worked just right if I went into the BIOS and set it to use only the nVidia card. However, because yours is graphic switchable I don't know that you have this option. Have you looked at even the BIOS? Press ESC you turn on, then F10
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My daughter uses the option to go back and save your work before closing down as a way open to passing the family safety settings. When she is about to be disconnected because of the time limit, she knows that three programs open with live data on them (like playing content in YouTube, chatting and playing an internet game all at the same time) he will come to the top and he the opportunity to go back and close its data. It completely negates the purpose of the limits of time. Because it doesn't then go back to the top and stop her. It falls just the problem completely. I don't know that this is just a gap in the family of security software. But thought I would ask to see if this option can be disabled, or if there is a way around it.
If you find the Parental control in Windows help, he will guide you to articles online for the safety of these two parental controls & family. There may be a solution in the event of children in one of these roads.
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I have a new computer and I want to disable the program (Adobe Acrobat 9 standard), I can not access my old computers, but I have the right of S/N, is it possible to disable?
Thanks in advance
Theodore
Hi theodorel7897246,
I'm sorry, but it is not possible to deactivate your license Acrobat from a computer crashed.
Please contact the customer service if they can help.
Kind regards
Ana Maria
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