RAC best practices

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• OEM 12 c Best Practice follow-up 11.1 DB RAC env. + datagurd

  OEM 12 c 5 release is the only monitoring in our environment... is there a better model of practice on what aspects need to be monitored and their default values?
  

  This doc for 12 c DB is very useful, it's best practices for high availability. They talk a lot about the RAC/DG monitoring.  https://docs.Oracle.com/database/121/HABPT/monitor.htm#HABPT003

  version 11.2 is here https://docs.oracle.com/cd/E11882_01/server.112/e10803/monitor.htm#g1011041, I read them both though, as there are some new features in version 12 c who may still apply to 11 g.

  Regarding the parameters/models go, if you create a template of the target type (monitoring sc_results.php-> create-select target type-> type > select category/target), this will include all the parameters of the type of target (including the CEO) and as close as you'll have to 'default thresholds' Oracle.  It is the best branch of the teams effort produced.   Of course, they will not be perfect for everyone, but it's a starting point!

• Best practices on the steps of the Post after 11.2.0.2.4 installation of ORACLE RAC

  I finished 11.2.0.2 RAC installation and it patched to 11.2.0.2.4. The database is also created.
  
  Nodes are Linux redhat and ASM storage.
  
  There the good article or links regarding best practices post not after installation?
  
  Thanks in advance.

  Hello

  I also want to know what kind of analysis scripts, I can use for the installer as cron tasks to monitor or detect any failure or problems?

  To control the Cluster (OS level):
  I suggest you use a tool powerful "CHM" already accompanying the product grid Infrastructure.

  How do you set up? Nothing... Just use.

  Cluster Health Monitor (CHM) FAQ [ID 1328466.1]

  See this example:
  http://levipereira.WordPress.com/2011/07/19/monitoring-the-cluster-in-real-time-with-chm-cluster-health-monitor/

  To monitor the database:
  With the HELP OF ADVISORS of PERFORMANCE TUNING AND FUNCTIONS of MANAGEABILITY: AWR and ASH and ADDM Sql Tuning Advisor. [276103.1 ID]

  The purpose of this article is to illustrate how to use the new features of 10g management to diagnose
  and resolve performance issues in the Oracle database.
  Oracle10g features powerful tools to help the DBA to identify and resolve performance issues
  without the hassle of complex statistical data analysis and comprehensive reports.

  Hope this helps,
  Levi Pereira

  Published by: Levi Pereira on November 3, 2011 23:40

• Best practices using clusters to create the queue/notifier/bundles?

  I'm in a block diagram, a queue, the notifier and several instances of cluster of bundle

  that all use the same data structure.   There is a typedef of cluster for the data structure.

  Of course, each of these objects (define the queue, set notifier, bundle)

  you want to know how do you define the cluster.

  What is considered best practices?

  (1) create a dummy instance of the cluster across data structure

  definition is necessary (and hide all on the public Service)

  (2) create only one instance and son at all places, it is necessary

  But there is no stream on this thread: it's only the cluster * definition *.

  which is used, so this seems to clutter the comic.

  (3) create only one instance of the cluster control and use local variables

  everywhere else the definition of cluster is required.  It's _value_ is never

  assigned or given read-so no problem with race conditions.

  (4) another way?

  If you were to clean up someone else's code, how do you expect

  See this Treaty?

  It occurred to me during this writing that here where I

  "unbundle...... code bundle" I could wire the original beam to the

  the two "unbundle" and "bundle" - but that would be too complicated

  and the size of the comics with useless thread?

  Thank you and best regards,

  -- J.

  Hi Jeff,

  I think that this question is about "sharing" the typedef and not how share data (?)  If the cluster control is registered as a typedef (or a strict typedef) but NOT SIMPLY as a CONTROL, then when a Diagram-constant of the typedef is created, it will be updated when you update the .ctl typedef!  (and there is no FP control to hide )  Of course if the typdef is already available "close" if necessary, you will be able to use instead - save a spacer of diagram.

  See you soon.

• Best practices installation CARS in two areas of data center?

  Data Center has two distinct areas.
  In each area, we have a storage system and a rac node.
  
  We will install RAC 11 GR 2 ASM.
  
  For data, we want to use diskgroup + DATA, normal redundancy mirrored on two storage systems.
  
  CRS + vote, we want to use diskgroup + CRS, normal redundancy.
  But for diskgroup CRS + vote with normal redundancy, there are 3 LUNS and we have only 2 storage systems.
  In my view, that the third logical unit number is necessary to avoid situations of split brain.
  
  If we put two LUNS to storage lun #1 and the other for storage #2, what will happen when storage faills #1 - it means that two of the three disks for diskgroup + CRS are inaccessible?
  What will happen when all the material in the #1 box fails?
  Is the human intervention: at the time of the failure, which #1 area rises again?
  
  Is there a best practice for configuration 2-zone 2-storage cars?
  
  Joachim

  Hello

  With regard to the vote of the files are concerned, that a node must be able to access more than half of the files with the right to vote at any time (simple majority). In order to be able to tolerate failure of n files in vote, need at least 2n + 1 configured. (n = number of files with voting rights) for the cluster.
  The problem in a stretch cluster configuration, is that most of the facilities use only two storage systems (one on each site), which means that the site that hosts the majority of voting records is a potential single point of failure for the entire cluster. If the storage or the site where the files of n + 1 vote is configured fails, the entire cluster will go down, because Oracle Clusterware will lose the majority of the files.
  To avoid a complete cluster failure, Oracle will support a third vote file on a cheap lowend, standard NFS mounted device somewhere in the network. Oracle recommends the file NFS vote on a dedicated server, which belongs to a production environment.

  The white paper below allows you to accomplish:
  http://www.Oracle.com/technetwork/database/Clusterware/overview/grid-infra-thirdvoteonnfs-131158.PDF

  Also with regard to the configuration of the vote and OCR (11.2), when you use ASM. How they should be stored?
  I recommend that you read:
  {message: id = 10028550}

  Kind regards
  Levi Pereira

• Failover of concurrent managers — best practices

  Hello
  
  
  We are implementing CFP on our EBS 11.5.10.2 on Linux - with 4 levels of Application nodes
  
  We would like to know what are the best practices, in order to implement the CFP and check failover.
  
  
  Thank you to

  Hello

  following MOS (metalink) note will guide you: -.

  Simultaneous treatment - best practices for Performance of managers simultaneously in E-Business Suite [ID 1057802.1]
  How to set up and test the failover of the CFP on no RAC environments. (Note 743716.1)
  Simultaneous parallel processing Failover/Failback expectations (Note 271090.1)

  If you have a CAR too so note below will help you: -.

  How to ensure the NLB of concurrent process Manager in Configuration CFP - RAC (Note 762024.1)
  How to operate a simultaneous program against a specific instance of CARS with the installation of CFP/PAP? (Note 1129203.1)
  How parallel installation simultaneous treatment to aid APPL_TOP shared environment RAC (Note 278816.1)

  Thank you
  JD

• Measurement on the side time server? Best practices for the turn-based game

  Hello

  What would be the best practice for measuring time in a turn based game?

  I was looking at the timeout of the room, but to use that it would mean that, for each round, I put users in a new room?

  Is there a way where I can measure time serverside and keep users in the same room?

  If so, I could use php, otherwise, we would need java that allows to measure a time race.

  See you soon,.

  G

  Hello

  You can definitely use PHP or Java - we provide integration of server

  libraries for either. I don't know exactly what is the use case, so I can't

  comment on what makes the most sense, but if it is not information which must be

  totally secure, grading on the client can be a viable approach also.

  Nigel

• Best practices Apple ID

  I help the family members and others with their Apple products. Probably the problem number one revolves around Apple ID I saw users follow these steps:

  (1) share IDs among the members of the family, but then wonder why messages/contacts/calendar entries etc are all shared.

  (2) have several Apple IDs willy-nilly associated with seemingly random devices. The Apple ID is not used for anything.

  (3) forget passwords. They always forget passwords.

  (4) is that I don't really understand. They use an e-mail from another system (gmail.com, hotmail.com, etc) as their Apple ID. Invariably, they will use a different password for their Apple ID than the one they used for other email, so that they are constantly confused about which account to connect to.

  I have looked around for an article on best practices for creating and using Apple ID, but could not find such a position. So I thought I would throw a few suggestions. If anyone knows of a list or wants to suggest changes/additions please feel free. Here are the best practices for normal circumstances, i.e. not cooperate accounts etc.

  1. every person has exactly 1 Apple ID.

  2. do not share Apple ID - share content.

  3. do not use an email address of another counts as your Apple ID.

  4. When you create a new Apple ID, don't forget to complete the secondary information to https://appleid.apple.com/account/manage. It is EXTREMELY important questions your email of relief and security.

  5. the last step is to collect the information that you entered in a document and save to your computer AND print and store it somewhere safe.

  Suggestions?

  I agree with no. 3, it is no problem with using a addressed no iCloud as the primary ID, indeed, depending on where you set up your ID, you may have no choice but to.

• Best practices Upgrade Path - Server 3 to 5?

  Hello

  I am trying a migration and upgrade of a server in the Profile Manager. I currently run an older mac mini Server 10.9.5 and Server 3 with a vast installation of Profile Manager. I recently successfully migrated the server itself out of the old mac mini on a Xserve end 2009 of cloning the drive. Still of double controls everything, but it seems that the transition between the mini and the Xserve was successful and everything works as it should (just with improved performance).

  My main question is now that I want to get this software-wise at day and pass to the Server 5 and 10.11. I see a lot of documentation (still officially Apple) best practices for the upgrade of the Server 3 to 4 and Yosemite, but can't find much on the Server 5 and El captain, a fortiori from 3 to 5. I understand that I'll probably have to buy.app even once and that's fine... but should I be this staging with 10.9 to 10.10 and Server 4... Make sure that all is well... and the jump off 10.11 and Server 5... Or is it 'safe' (or ok) to jump 3 to 5 Server (and 10.9.5 to 10.11.x)? Obviously, the AppStore is pleased to make the jump from 10.9 to 10.11, but once again, looking for best practices here.

  I will of course ensure that all backups are up-to-date and make another clone just before any which way that take... but I was wondering if someone has made the leap from 3-5... and had things (like the Profile Manager) still work correctly on the other side?

  Thanks for any info and/or management.

  In your post I keep the Mini running Server 3, El Capitan and Server 5 install the Xserve and walk through setting up Server 5 by hand. Things that need to be 'migrated' as Open directory must be handled by exporting the mini and reimport on Xserve.

  According to my experience, OS X Server facilities that were "migrated" always seem to end up with esoteric problems that are difficult to correct, and it's easier to adopt the procedure above that to lose one day try.

  YMMV

  C.

• What is the best practice to move an image from one library to another library

  What is the best practice to move an image from a photo library to another library of Photos ?

  Right now, I just export an image on the desktop, then remove the image from Photos. Then, I open the other library and import these images from the office in Photos.

  Is there a better way?

  Yes -PowerPhotos is a better way to move images

  LN

• Code/sequence TestStand sharing best practices?

  I am the architect for a project that uses TestStand, Switch Executive and LabVIEW code modules to control automated on a certain number of USE that we do.

  It's my first time using TestStand and I want to adopt the best practices of software allowing sharing between my other software engineers who each will be responsible to create scripts of TestStand for one of the DUT single a lot of code.  I've identified some 'functions' which will be common across all UUT like connecting two points on our switching matrix and then take a measure of tension with our EMS to check if it meets the limits.

  The gist of my question is which is the version of TestStand to a LabVIEW library for sequence calls?

  Right now what I did is to create these sequences Commons/generic settings and placed in their own sequence called "Functions.seq" common file as a pseduo library.   This "Common Functions.seq" file is never intended to be run as a script itself, rather the sequences inside are put in by another top-level sequence that is unique to one of our DUT.

  Is this a good practice or is there a better way to compartmentalize the calls of common sequence?

  It seems that you are doing it correctly.  I always remove MainSequence out there too, it will trigger an error if they try to run it with a model.  You can also access the properties of file sequence and disassociate from any model.

  I always equate a sequence on a vi and a sequence for a lvlib file.  In this case, a step is a node in the diagram and local variables are son.

  They just need to include this library of sequence files in their construction (and all of its dependencies).

  Hope this helps,

• TDMS & Diadem best practices: what happens if my mark has breaks/cuts?

  I created a LV2011 datalogging application that stores a lot of data to TDMS files.  The basic architecture is like this:

  Each channel has these properties:

  To = start time

  DT = sampling interval

  Channel values:

  Table 1 d of the DBL values

  After the start of datalogging, I still just by adding the string values.  And if the size of the file the PDM goes beyond 1 GB, I create a new file and try again.  The application runs continuously for days/weeks, so I get a lot of TDMS files.

  It works very well.  But now I need to change my system to allow the acquisition of data for pause/resume.  In other words, there will be breaks in the signal (probably from 30 seconds to 10 minutes).  I had originally considered two values for each point of registration as a XY Chart (value & timestamp) data.  But I am opposed to this principal in because according to me, it fills your hard drive unnecessarily (twice us much disk footprint for the same data?).

  Also, I've never used a tiara, but I want to ensure that my data can be easily opened and analyzed using DIAdem.

  My question: are there some best practices for the storage of signals that break/break like that?  I would just start a new record with a new time of departure (To) and tiara somehow "bind" these signals... for example, I know that it is a continuation of the same signal.

  Of course, I should install Diadem and play with him.  But I thought I would ask the experts on best practices, first of all, as I have no knowledge of DIAdem.

  Hi josborne;

  Do you plan to create a new PDM file whenever the acquisition stops and starts, or you were missing fewer sections store multiple power the same TDMS file?  The best way to manage the shift of date / time is to store a waveform per channel per section of power and use the channel property who hails from waveform TDMS data - if you are wiring table of orange floating point or a waveform Brown to the TDMS Write.vi "wf_start_time".  Tiara 2011 has the ability to easily access the time offset when it is stored in this property of channel (assuming that it is stored as a date/time and not as a DBL or a string).  If you have only one section of power by PDM file, I would certainly also add a 'DateTime' property at the file level.  If you want to store several sections of power in a single file, PDM, I would recommend using a separate group for each section of power.  Make sure that you store the following properties of the string in the TDMS file if you want information to flow naturally to DIAdem:

  'wf_xname '.
  
  'wf_xunit_string '.
  
  'wf_start_time '.
  
  'wf_start_offset '.
  
  'wf_increment '.

  Brad Turpin

  Tiara Product Support Engineer

  National Instruments

• best practices to increase the speed of image processing

  Are there best practices for effective image processing so that will improve the overall speed of the performance? I have a need to do near real-time image processing real (threshold, filtering, analysis of the particle/cleaning and measures) at 10 frames per second. So far I am not satisfied with the length of my cycle so I wonder if he has documented ways to speed up performance.

  Hello

  IMAQdx is only the pilot, it is not directly related to the image processing IMAQ is the library of the vision. This function allows you to use multi-hearts on IMAQ function, to decrease the time of treatment, Arce image processing is the longest task for your computer.

  Concerning

• Best practices for the .ini file, reading

  Hello LabViewers

  I have a pretty big application that uses a lot of communication material of various devices. I created an executable file, because the software runs on multiple sites. Some settings are currently hardcoded, others I put in a file .ini, such as the focus of the camera. The thought process was that this kind of parameters may vary from one place to another and can be defined by a user in the .ini file.

  I would now like to extend the application of the possibility of using two different versions of the device hardware key (an atomic Force Microscope). I think it makes sense to do so using two versions of the .ini file. I intend to create two different .ini files and a trained user there could still adjust settings, such as the focus of the camera, if necessary. The other settings, it can not touch. I also EMI to force the user to select an .ini to start the executable file using a dialog box file, unlike now where the ini (only) file is automatically read in. If no .ini file is specified, then the application would stop. This use of the .ini file has a meaning?

  My real question now solves on how to manage playback in the sector of .ini file. My estimate is that between 20-30 settings will be stored in the .ini file, I see two possibilities, but I don't know what the best choice or if im missing a third

  (1) (current solution) I created a vi in reading where I write all the .ini values to the global variables of the project. All other read only VI the value of global variables (no other writing) ommit competitive situations

  (2) I have pass the path to the .ini file in the subVIs and read the values in the .ini file if necessary. I can open them read-only.

  What is the best practice? What is more scalable? Advantages/disadvantages?

  Thank you very much

  1. I recommend just using a configuration file.  You have just a key to say what type of device is actually used.  This will make things easier on the user, because they will not have to keep selecting the right file.

  2. I use the globals.  There is no need to constantly open, get values and close a file when it is the same everywhere.  And since it's just a moment read at first, globals are perfect for this.

• Best practices on how to code to the document?

  Hello

  I tried to search the web tutorials or examples, but could not get to anything. Can anyone summarize some of their best practices in order to document the LabVIEW code? I want to talk about a quite elaborate program, built with a state machine approach. It has many of the Subvi. Because it is important, that other people can understand my code, I guess that the documentation is quite large, but NEITHER has yet a tutorial for it. Maybe a suggestion ?

  Thank you for your time! This forum has been a valuable Companion already!

  Giovanni

  PS: I'm using LabVIEW 8.5 btw

  Giovanni,

  Always:

  Fill in the "Documentation" in the properties of 'VI '.

  Add description to the controls of its properties

  Long lines label

  Label algorithm, giving descriptions

  Any code that can cause later confusion of the label.

  Use the name bundle when clusters

  Add a description tag in loops and cases. Describing the intention of the loop/case

  Follow the good style guide as will make reading easy and intuitive vi.

  I'm sure there are many others I can't think...

  I suggest you to buy "LabVIEW style book", if you follow what this book teaches you will produce good code that is easy to maintain.

  Kind regards

  Lucither