How OCR mirroring works

Hi gurus,

According to the Oracle docs "disk groups normal redundancy provide 3 disk files with right to vote, 1 OCR and 2 copies (a primary and a secondary mirror).»

Does this mean there are 2 OCR in the diskgroup?. Then,

Where the OCR Elementary and mirror created in this case? Are they were distinct failure group? So how can I check the same through asmcmd?

This is my environment set in place

[grid@xxxx01 ~] $ ocrcheck

Status of the Oracle Cluster registry is:

Version: 3

Total space (in kilobytes): 262120

Used space (in kilobytes): 2800

Amount of available space (KB): 259320

ID: 1074808153

Device file name / : + OCR_VOTE

Verifying the integrity of file/device succeeded

File/device not configured

File/device not configured

File/device not configured

File/device not configured

Checking cluster registry integrity succeeded

Logical corruption control bypassed due to the non-privilegie user

My + OCR_VOTE is in normal redundancy, while watching the level to ASM

[grid@xxxx01 ~] $ asmcmd

ASMCMD >

ASMCMD > cd + OCR_VOTE

ASMCMD > ls

ehrptpi-cluster.

ASMCMD > cd xxxxxi-cluster.

ASMCMD > ls

ASMPARAMETERFILE /.

OCRFILE /.

ASMCMD > cd OCRFILE /

ASMCMD > ls-l

Name of type Redund time scratched Sys

OCRFILE MIRROR RUDE JAN 07 20:00 Y REGISTRY.255.763526561

ASMCMD >

Here I can see OCR only one file. So what is meant by 1 OCR and 2 copies?

Can someone shed some light on how OCR mirrored actually works?

Thank you and best regards,

Mahi

Hi Manon,.

you have different KFFXP because there are two different files. 253 is you spfile asm and 255 is your ocrfile. Asmcmd pass in your diskgroup to ocr_vote to see the two files. It should look like this:

ASMCMD [+ SYSTEMDG/rac-entw] > ls

ASMPARAMETERFILE /.

OCRFILE /.

ASMCMD [+ SYSTEMDG/rac-entw] > ls ASMPARAMETERFILE.

REGISTRY.253.804243265

ASMCMD [+ SYSTEMDG/rac-entw] > ls OCRFILE.

REGISTRY.255.804243269

ASMCMD [+ SYSTEMDG/rac-entw] >

The recommendation for an another OCR second or even third is more fault tolerant. With an OCR (mirrored with two copies), you can lose a copy but not all diskgroup. If you have more on other OCR starts you might survive even the loss of a diskgroup together.

However, since your votefiles are stored on the disks in the Group ocr_vote on your cluster would break even if you lose this group. However, you have an up-to-date version of your ocr, compared to a version of several hours of your backup of the ocr.

Beside that, I see personally very little benefit in addition to a mirror OCR.

What do you mean with master OCR?

Concerning

Thomas

Tags: Database

Similar Questions

  • All-in-one HP Officejet 7300/7400 series, it will work with Windows 7 and how to get the OCR software work?

    I have a HP Officejet 7300/7400 series all-in-one, it will work with Windows 7 and how to get the OCR software work?

    By installing complete software functionality of the HP cd or online installation and connection of the printer only when the installation says too much

    http://h10025.www1.HP.com/ewfrf/wc/softwareCategory?OS=4062&LC=en&cc=UK&DLC=en&sw_lang=&product=391182#n193

  • Is it possible to perform a search on Android content of a current Web page? If so, how could put upward and how does it work?

    Nice day!
    Dear Sirs / ladies,.
    You have a manual how to search the contents of the current Web page:
    https://support.Mozilla.org/en-us/KB/search-contents-current-page-text-or-links

    Unfortunately, I wasn't able to find the same option for Android.
    Is this possible?
    How does it work?

    sincerely
    Summerman

    See the attached screenshot for searching in the location of the page in our menu.

    This is a somewhat new. You must make sure, that you are on the latest version of Firefox for Android, version 37. You can check by typing about: firefox in the address bar. The version will be in the upper left corner of the page.

  • Time capsule will save my laptop complete? Which means that if it crashes, breaks, etc. I'll be able to restore all my memory/data on a new laptop? Exactly how does it work? Thank you.

    Time capsule will save my laptop complete? Which means that if it crashes, breaks, etc. I'll be able to restore all my memory/data on a new laptop? Exactly how does it work? Thank you.

    Yes. Time Capsule uses the Time Machine on your Mac software. Here is information on both and the restoration:

    http://www.Apple.com/airport-time-capsule/

    Use Time Machine to back up or restore your Mac - Apple Support

  • What is efax and how does it work?

    Hello!

    eFax® is a service provided by eFax®, not Hewlett-Packard, which allows you to send and receive faxes using the Internet instead of a phone line. eFax® is easy to use, but it is different from a typical telephone fax. You do not need a phone line to use it, so you don't have to worry about busy signals and you can place your printer where you want to, not where the phone plugs are! The fax number you are provided will not generally be a local number and maybe even in a different country. You will receive 20 entrants and 20 pages of outgoing fax per month for free with this service. Your account page will reset at midnight Pacific, the first of each month time. You can also subscribe to eFax® more to get additional pages by month by visiting: http://www.eFax.com/products/internet-fax.

    How does it work?

    Hi Im_cheesecake,

    Great information, if you don't mind I just want to piggy back off of your post, to eliminate any likelihood of confusion.

    The 20 free incoming & 20 free outgoing faxes are with HP printer which include the impression of the eFax service application.  From now on, we have three series printers that include the application pre-installed print eFax: HP Photosmart 7510 Series, series of 110 HP Envy and HP Photosmart eStation C510a.

    

    eFax also has a free plan that allows you to receive a limited number of faxes, but cannot send faxes. If you exceed the allowed number of received faxes, eFax invite you to upgrade to a paying account. Here are the main Details of the free plan:

    • A (i.e., non-local) eFax number distance
    • Regional/prefix code is selected by eFax and is not editable (except if you upgrade to a paid account)
    • 20 pages of incoming faxes per month (reception only)
    • You are prompted to upgrade to a paid account if you exceed 20 inbound pages, or if you need to send capacity.

  • How can I work with two icloud ID on the same pc?

    How can I work with two icloud ID on the same pc?

    Define "work".

    What exactly do you want to accomplish?

    You can use the iCloud Panel to connect to iCloud account and use a browser to go to icloud.com and sign in with another account.

  • Please can someone explain how this circuit works?

    I was digging through some old files left here by a former employee and found this.  There is a text file with it that said it was a temperature alarm that was supposed to have a green light when the temperature was between 50 and 100, but a red light at any other temperature.  I can play with it and see that the lights are changing, but how to check temperatures?  Also, how this circuit works?  I never did something like this on my own, but I see what seems to be a comparator is powered by two OPERATIONAL amplifiers.  May of you please enlighten us on this so I can prove that it works?  I have a use for this, but I need to know if it will work in its current form, or if I need to make some adjustments.

    Although this tour might work in simulation there several defects that could cause problems if implemented in hardware.

    First, the Thermistors generally have a nonlinear inverse relationship to temperature. In this case this isn't a huge deal since temperatures too high or too low, the two are supposed to turn on the red LED. However, defining the thresholds of comparator at 1/3 and 2/3 of Vcc2 aren't very likely to correspond to the desired temperature.

    Then the LM324 has an R4 and R5 totem-pole output circuit are rather empty.  The output circuit can source or sink tens of milliamps for emitter junctions base of Q1 and Q2 may be vulnerable to damage.

    When Q3 and Q4 are disabled, as shown in the picture, the current flowing through the Green LED is 30 my. Indication LEDs are usually evaluated for 20 my or less.

    When Q3 or Q4 is enabled, the current flowing through the red LED is limited by the transconductance of transistors or the V-I characteristic of the diode. In both cases, the values are almost certainly in the 'let the magic smoke out' of the LED range.

    Although not destructive, Q3 and Q4 are not necessary.  The logic can be changed by reversing entries for the elements of comparison and by replacing maybe to OR AND on the transistor connections.

    Lynn

  • How involved funciton works?

    How involved funciton works when using digital controls?


  • How can I work from my deskstop PCs, directly in a foledr shared under win server 2008 so that all my work is saved directly on the server.

    How can I work from my deskstop PCs, directly in a foledr shared under win server 2008 so that all my work is saved directly on the server.

    what I try to do is the following.

    I installed winserver 2008 on a machine and I created a folder for the individual. I want the individaul to connect in the folder ocreated on winserver 2008 directly from their desktop and laptop computers and their work so that all works are recorded directly on the server.

    Post in the Windows Server Forums:
    http://social.technet.Microsoft.com/forums/en-us/category/WindowsServer/

  • Application of logic gates on digital data... How does it work?

    Hello

    While working with labview, I tried to apply or digital data, he agreed the entry and responded to the output form digital too.

    I did not understand how is - this work on a digital data when entering are supposed to be Boolean for the logical entry doors.

    The outputs are also out of the assumption to 5 | 4 gives results 5.

    Also, I am attaching my VI.

    Please inform what is the logic behind this calculation.

    Concerning

    Hello

    logical operations operate with integers (any will do) too. The integer is used at the level of the ILO...

    The outputs are also out of the assumption to 5 | 4 gives results 5.

    5 is "0101" in binary representation, 4 is "0100":

    0101 OR
    0100
    ____
    0101 result
    
  • My computer says that it is connected to the internet but the HTTP 500 Internal server Err error rises. How I get working again?

    Why my internet has stopped working

    My computer says that it is connected to the internet but the HTTP 500 Internal server Err error rises. How I get working again? I have another computer in the House and that works very well.

    http://support.Microsoft.com/kb/321448

    In some cases, you must remove the cookie as well.
  • How can I work with ms word 2002 docx files

    original title: ms word 2002 docx files

    How can I work with the docx files using MS Word 2002 XP?

    How can I work with the docx files using MS Word 2002 XP?

    Get the free Converter: http://office.microsoft.com/en-us/downloads/office-online-file-converters-and-viewers-HA001044981.aspx

  • When I try to scan with my CanoScan N640P ex scanner I receive a message indicating the Port to the printer that is used by another device. How can I work around this problem?

    When I try to scan with my CanoScan N640P ex scanner I receive a message indicating the Port to the printer that is used by another device.  How can I work around this problem?

    Hi ejp70,

    1. did you of recent changes on the computer?

    2. to when was the last time the scanner was working fine?

    3. you have any other printer\scanner connected to the computer?

    If you have any other printer\scanner connected to the computer, disconnect them and check if it works.

    I suggest that you uninstall and reinstall the scanner to the computer, also make sure that you install the latest drivers for scanner on Canon website.

  • OCR has worked with xp but not windows 7

    With the help of HP C3180 all-in-One printer and Windows 7, 64-bit.

    OCR has worked with XP but not with 7.  Am I missing something?

    Hello belcanguy

    If scanning with I.R.I.S. only shows the scan to image that says Solution Center? Try I scan a document using the Solution Center and see if you can choose an OCR pdf or RTF document.

  • My 500 keyboard Microsoft Wireless Comfort has "extra" keys at the top. How does it work? Should I do something?

    My 500 keyboard Microsoft Wireless Comfort has "extra" keys at the top. How does it work? I have to do something

    Hello

    The keys that you have mentioned are known as multimedia keys that will help you to achieve functions like playing the song, stop playback of a song, open the web browser etc. to one touch access.

    You can refer to the manual for the keyboard for additional References.

    Thank you, and in what concerns:
    Naman R - Microsoft technical support engineer.

    Visit our Microsoft answers feedback Forum and let us know what you think.

Maybe you are looking for

  • Satellite A105-S2194 acknowledges that half of the installed RAM.

    Hello I have a Satellite A105-S2194 I bought in January 2007 from Walmart. It came with a single stick of PC - 4200 512 MB of RAM. Later this year, I bought a 1 GB of RAM PC-4200 (Crucial memory) key, so it has been read 1.5 G since then. Last week,

  • You can delete my Skype account?

    Hello, you can delete my Skype account?

  • NI-VISA (access permissions)

    Hello I have 5 systems running a version of labview software and all but 1 works properly. one that is not is to have a memory leak. It also has (NI-ViSA with no access authorization) icon in the lower right corner. All the others did not. I am very

  • Camera app sugestion

    Allow installation path where the pictures are saved when taken asswell that video is so lets save external SD that can have much more space. at the time of your limited space on the internal SD card which is usually low. If possible add option hdr m

  • Find the position

    Hello I have several huge files. The problem is when I want to work with them, it is very long. Therefore, I try to seek the position in the file. It is a principle even when you search for a word in a dictionary. If you search for the word 'painter'