Oracle coherence first read/write operation take longer

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• NFC tags low level read/write operations

  Hello
  
  I know it's little bit offtopic question - but since you are experts in the field I will try you may ask a simple question:
  
  1 / I want to know what protocol is used to read/write for the NFC operations, tags are used. According to my understanding after that the label is placed on the NFC (NFC, USB drive phone) reader, it is powered and set to the ready state. The application protocol for read-write operation is used. As I think that the format and content of the commands used to read/write is not specified in the ISO 14443 and it is based on a material/manufacturer and will be different for FeliCa, Mifare, Innovision, etc tags, so there is no way how to handle read/write NFC tags with unique implementation operations. This hypothesis is correct?
  
  2 / are there tags, that supports the 4 7816 APDU commands for read/write operations?
  
  
  Thanks for the reply
  Kind regards
  STeN

  Hello

  To read the NFC forum specifications. It will be better explained than by me.

  several protocols are used according to the contactless front-end configuration and capabilities. It includes ISO14443-A, ISO14443-B and Felica. Sometimes the other protocols are also available, for example Innovatron (not Innovision lol)

  Mifare is not a Protocol, it is a line of NXP products. These products use the lower layers of the ISO14443-A protocol specification.

  There are 4 types of tags

  (1) using the lower layers of the ISO14443-A
  (2) using the lower layers of the ISO14443-B
  (3) something related to felica?
  don't know exactly on these 3, you should read the specs. Everything is clearly understandable, not like ETSI.

  (4) something using commands ISO7816-4 on top A ISO14443 or B or others. You must SELECT, BINARY, BINARY update READ. You can implement using javacard, I did it and it works. You need two binary files, which can be hard-coded.

  Concerning
  Sébastien

• Effective use of the FPGA read/write

  I am writing an application for a CompactRIO real-time and I am looking for ways to simplify my code and reduce the CPU usage. I use FPGA to do much CAN e-mail and signal processing, then I have a VI running on the real-time processor that reads values in the FPGA, does some processing and outputs data in the FPGA. My code running on real-time parallel uses several loops running in a master/slave architecture. A single loop reads all necessary information in the FPGA in indicators and writes the values of the controls in the FPGA. The other loops read entries and manipulate the outputs via local variables.

  My question if it would be more effective to get rid of the loop which is dedicated to the communication of FPGA and has of each loop to read and write directly on the FPGA. If I use a reference block FPGA open and use the reference of the output in several loops, each read/write operation block others until it's over? Each output is changed only in one place in the code, but there are several entries that are used by multiple loops. It is even more effective for each loop of read/write for the FPGA on request? How will this affect determinism?

  Thank you

  Jon

  Jon,

  Read/write controls is not deterministic, but I think that your previous method should work just fine, as long as you have that unique writers. If you have multiple writers, you start affected by race conditions.

  I don't think you will see a significant improvement in the performance/CPU in the alternative method. You would see big performance gains if your master loop reads more slowly indeed, but it's always a compromise.

• The control law of read/write FPGA on the loop of the root / the UI thread?

  Hi all

  As the title suggests, the read/write control FPGA, https://zone.ni.com/reference/en-XX/help/371599H-01/lvfpgahost/readwrite_control/, is on the loop of the root / the UI thread?

  Watch, https://zone.ni.com/reference/en-XX/help/371361J-01/lvconcepts/multitasking_in_labview/, this would indicate as that, but I would get a good response.

  Kind regards

  David

  While I'm not 100% if it acts on the loop of the root / UI thread - calls to the FPGA (e.g. control of read/write operations FIFO) block permanently. I remember having a weird problem in the past where my FPGA operations have been suspended because I was expecting given FIFO elsewhere.

  You should be able to test this easily enough - try to open a file dialog during playback of your FPGA. If playback crashes while the dialog is open, you have a loop of root problem.

• Reading text file takes a long time after the first time

  Dear experts LabVIEW,

  I'm having a problem with playback of text file. I'm reading only each Nth line from a file to preview with this sub vi:

  

  I seems to work the first time I do it well. The loop takes almost no time to perform an iteration.

  Then when I load the same file with exactly the same parameters an iteration takes about 50ms.

  Subsequent attempts always seem to take longer execution time.

  Only when I restart the calling vi fast for a single file.

  When executing the sub vi alone it is still fast, but I don't see how the main vi (too complex to post here) could hinder the execution of the Sub vi.

  I have no one else to open the file in the main vi, I do not use too much memory...

  Just now I have not now where to look. Does anyone have an idea?

  Concerning

  Florian

  
  

• How to give read, write permission to the directory from one user to another user in oracle 10g

  Hello

  I have a database in two. key is the source database and Board of Directors is the target database. Now I want a (single) create these two database directory to put the dump file. How can he give permission to READ, WRITE access to this directory both of database? Someone help me.

  Hello

  I think that first create a level of operating system directory, and then try Mr.Kar k steps

  OF DATABASE1 (KEY)

  SQL >dir1 CREATE or REPLACE a DIRECTORY as "/ opt/oracle / ';

  SQL >GRANT READ, WRITE on dir1 to the PUBLIC; (if you want to give access to all users then give public access)

  SQL >GRANT READ, WRITE on rep1 to ; (if you want to give access to the particular user)

  OF BASE2 (COUNCIL)

  SQL >CREATE Or REPLACE rep1 as DIRECTORY "/ opt/oracle / ';

  SQL >GRANT READ, WRITE on dir1 to the PUBLIC; (if you want to give access to all users then give public access)

  SQL >GRANT READ, WRITE on rep1 to ; (if you want to give access to the particular user)

• Could not read a DVD after the write operation

  Using windows XP sp3.

  I burned a dvd with nero data disc 9 esentials and then couldn't read or any other disk.

  Tried the disc in my computer vista laptop and it read fine.

  DMA is enabled.

  After a lot of noise, I restarted my computer xp and it will now play dvd's and discs again.

  I noticed that there are several entries in the device for ide primary and secondary Manager.

  Here is a link to the screenshot:

  http://AG1.dnsalias.com/photo/devicemanager.bmp

  Could be the problem?

  Now, I think that the problem may be due to the Nero 9 Essentials program if you close the program immediately after the write operation instead of clicking next and then closing. Thanks for your help.

• Set the following fields in 'read only' to take data from the first occurrence?

  Hoping that this can be easily done without the need for scripting.

  I'm working on creating a form of proposal. There are a few areas where I would like the first instance of an editable field, but the rest would be locked so that they are even taken out of the tab order.

  Example: On the first page, I have a field for the name of the company. This field is reproduced in the pages of the proposal. Each field has the same name. So all data have concluded one of them are dealt to each of them.

  Ideal solution: Front page field is editable, and is where data is entered. "All the following fields are defined as 'read only' and take their 'master' field data" so someone can't make a change to this form, for example, the third page and have this error repeated throughout the document.

  Is this possible?

  I use Acrobat Pro DC on Windows 7 pro.

  Thank you.

  You use a script to do it, but it's very simple.

  If the 'master' field is called "Text1", then enter this code in the calculation script customized for all other areas that need to have its value:

  Event.Value = this.getField("Text1").value;

• Create the table and take the name of user who can read/write on this table

  Dear gurus,
  
  I need to add the following column in Oracle 11g DB AND also add the name of user who can read/write ONLY the following table, any table to access the same read?
  
  I use to go to Oracle PL/SQL client.
  
  My dbname is 'customerdb '.
  
  TableName: "extractOrders."
  
  +: example of the field data.
  Column0 = logID: 1
  Column1 = idNumber: 39D13613-F061-D38D-100A-16536409C6D8
  Column2 = timestamp: 2011/07/11-13:45
  Column3 = resultCode: 40509
  Column4 = resultMessage: could not find the IDENTITY card
  Column 5 = number: 9813080808
  Column6 = iid: 87670200100001466100
  Column7 = products: D1430 | "' S1412 ' | "" S1407 | "' S2607 ' | "' S1417 ' | "" S1411 | "' S1413 ' | "" S1502 | "" S1406 | "' S1522 ' | "' S1524 ' | "' S1474 ' | "" S1473 ".

  user596669 wrote:

  I need to add the following column in Oracle 11g DB AND also add the name of user who can read/write ONLY the following table, any table to access the same read?

  I use to go to Oracle PL/SQL client.

  Let's say your table than extractorders is the schema of database clientsproperty.

  As this pattern create a stored procedure that runs with the privileges of the customerschema. Having this procedure return a ref cursor For example

  create or replace procedure ReadExtractOrders( c in out sys_refcursor ) authid definer is
  begin
    open c for select * from extractorders;
  end;
  

  As this code executes with the privileges of the customer schema it can read the table belonged to this scheme.

  Now give execute rights on this process for the Joe database schema - and this pattern can create a cursor on the table of ExtractOrders , without being able to access or use directly or refer to this table. Read access to this table is therefore protected by a reliable code belonged schema customers.

  Learn about the AUTHID clause and how it can be used to differentiate the code approved and non-approved, which allows to PL/SQL code to run with different privileges than the demand for prescriptions.

• I have a memory card reader/writer. You want to know what it takes to put photos on card

  I have a video photo frame that I put my memory card in to see photos. but cannot modify them. so I bought a card reader/writer, I have used before and had no problem. but didn't write what I did. now, I don't know how to recover my pictures on the computer to the memory card.

  If you insert the memory card into the reader and go to...
  Start / computer... you will find one or more removable
  Discs that represent the slots in the card reader.

  For example...

  Removable disk (e :))
  Removable drive (g)
  Removable disk (h :))

  Once you learn which represents removable disk
  the card slot is in you can copy and paste or drag and drop
  photos on the drive letter that you want to copy on the map. If
  you get to pictures in your folder images, you can
  Right-click on a group of photos or a folder and the
  menu choose... Send to / removable disk (? :))...)

  Tip: There is a limited number of files can be copied
  in the memory card root directory. You can see a
  error, something like:

  "Impossible to copy the XXXX: failed to create the directory or file.

  You can avoid this problem by placing the files in folders
  on the map.

• The implementation of replication by the issue and do a read/write via DB as well

  Hello
  
  We have replication between two clusters that is configured as below
  
  < reading-writing-support-map-plan >
  < internal-cache-system >
  < local plan >
  < / local plan >
  < / internal-cache-system >
  < dumps-plan >
  schema < class >
  > class name < com.oracle.coherence.patterns.pushreplication.PublishingCacheStore < / class name >
  < init-params >
  < init-param >
  java.lang.String < param-type > < / param-type >
  {cache name} < param-value > < / param-value >
  < / init-param >
  < / init-params >
  < / class-system >
  
  < / dumps-plan >
  < / reading-writing-support-map-plan >
  
  We also have another editor who writes to DB (direct entry), the operation never set. This is achieved by adding
  
  xmlns:sync = "" Class: com.example.test.CustomPushReplicationNamespaceContentHandler ' in coherence - server.xml and "
  
  < sync: Editor >
  < sync: Publisher-name > clientele2-JDBC-editor < / sync: Publisher-name >
  < sync: Editor-system >
  < sync: custom-Publisher-plan >
  < / sync: custom-Publisher-plan >
  < / sync: Editor-system >
  < / sync: Editor >
  
  (follow this doc,howto_develop_a_custom_push_replication_publisher https://blogs.oracle.com/cosmintudor/entry/coherence_-)
  
  In this, we were able to run DB update every time that could happens (normal put or push replication put).
  
  We now want to know, how to read through?
  
  
  Note: we have not used CacheLoader interface to implement Write Through. We have extended AbstractPublisherScheme to implement through writing. There is no charge method in the AbstractPublisherScheme class to play through.

  Hello

  To reach it, you must implement your own cache-store "Store1" that extends PublishingCacheStore and implements BinaryEntryStore. In your configuration, use "Store1" as the cache-store and not PublishingCacheStore. In the implementation of the 'Bank' 1, call super.load()/super.store () in your methods of load/store if you want to push the retrieved entries in your load() method store() otherwise do not call super methods.

  I hope this helps!

  See you soon,.
  NJ

• A better way to make a continuous read/write on a NOR-6008

  Hello

  I use a USB of NOR-6008 module and have a loop of the software configuration where I acquire analog signals, digital signals, then, then put a digital high or low and repeat. I use digital multiplex outside the material so that I can use 6 of the analog inputs to read 12 signals. The digital inputs that I have are connected to the buttons on a panel that are used for the entry instead of the screen of the computer of the user. My loop is also to build a buffer zone of all the signals on the analog and digital lines that I read in so I can on average and this process elsewhere in the program.

  The question that I am running is because this loop is very slow and on the final product is performed on a touch screen, XP Embedded PC and just this acquisition loop begins again as much CPU as the rest of my program. I would say that drops of loops on 4 or 5 cycles per second, which means that my update of 2 multiplex signals or longer than a second time. I would really like to better performance and does not use as much of my CPU resources.

  I use a way simple enough to make the loop of the acquisition, by setting the parameters I, reading, deleting the task, defining the parameters DI, read, erase the task and then by setting the parameters, write about it and delete the task, which gives a slight delay and repeat.

  Any thoughts on a better way to start the read/write that what I'm doing?

  I have attached the code examples in the loop of the acquisition that I use.

  Thank you!

  First of all, the best plan is to move the chain DAQmx before the loop to create and use a start DAQmx, then write in the loop, then clear once the loop ends.  This configuration must be done once, not every time you write the channel.  This should speed things up considerably.

• I can't write operating records

  My hay program mast view some data from a controller. This with an Ethernet connection. I read everything and I can write coils bet I can't write operating records. I hope someone can help? Heir my VI: Rutte

  With split or join in the digital numbers / range of data manipulation, you can take two U8 and join them in a single U16 (and vice-versa using split).  And you can take two U16 and join them in an only U32.

  Take a look at the attached Subvi, I did.  It is a wrapper for the Modbus VI functions so that I could use enumerations to read or write specific registers by name and manage the manipulation of data as a result.  It may call for a couple of typedef, that I created for my particular application, but that should not prevent you to see the structure and how I did the manipulation of data using the split and join.

• Feature SoftMotion Straight Line move read/write Targ Pos

  I read up to / study code on the packaging SoftMotion example of OR.

  I downloaded the code 'NOR week 2008 SoftMotion Development Module 2.1 and Compact 6-axis coordinated Motion Demo RIO' to discuss how I can implement a routine of homing on motor axes stepper and ran through a code without papers.

  I note that property to move to right Linr Targ Pos RW (target Position) can take in a meter target or the target tables.  The detailed help for this node does not detail the difference in operation.

  From what I can decipher, it seems that the table entry is for when you have mapped to several lines of a 'coordination' and the entry in table defines the position of the target for the individual axes in the coordinate.

  Is this true?

  Hi Rvallieu, you are right. It is the function that the table has. If you configure the system to work with multiple axes, the Position of the target of the right line to move read/write will have an entry level. This is something that should be mentioned in the help. This was reported to R & D (# 133028) for further investigations.

• CD / dvd drives will not read / write to any disk

  Hi, can someone help (first timer) I have two cd/dvd drives will read / write to disk get them all is a window pops up asking me to insert the disc. all my drivers are up to date, my Device Manager shows two active drives and works correctly, I use service pack 2 and I have installed a new software/hardware. my computer is a dell XPS 420 that is now three years old and this is the first time that I had any problem that I have not been able to solve. Help!

  Hello

  Its not unusual for the same problem have an impact on both drives, in fact its very common.

  Step 1: Please do all the same underneath if you did some before as is often total
  a process that solves the problem.

  Try this - Panel - Device Manager - CD/DVD - double click on the device - driver tab.
  Click on update drivers (this will probably do nothing) - RIGHT click ON the drive - uninstall.
  RESTART this will refresh the default driver stack. Even if the reader does not appear to continue
  below.
  
  Then, work your way through these - don't forget the drive might be bad, could be a coward
  cable or slight corrosion on the contacts (usually for a laptop) and other issues.

  Your CD or DVD drive is missing or is not recognized by Windows or other programs
  http://support.microsoft.com/kb/314060 - a Mr Fixit

  Try this fix manually if the Fixit 314060 does not work
  http://www.pchell.com/hardware/cd_drive_error_code_39.shtml

  Your CD or DVD drive is missing or is not recognized by Windows or other programs-
  a Mr Fixit
  http://support.Microsoft.com/kb/982116

  The CD drive or the DVD drive does not work as expected on a computer that you upgraded to
  for Windows Vista
  http://support.Microsoft.com/kb/929461

  When you insert a CD or a DVD, Windows Vista may not recognize the disc
  http://support.Microsoft.com/kb/939052

  Your CD or DVD drive cannot read or write media - A Mr Fixit
  http://support.Microsoft.com/GP/cd_dvd_drive_problems

  CD/DVD drive does not appear in Windows Vista, or you receive this error in Windows
  Vista installation after booting from the DVD (AHCI)
  http://support.Microsoft.com/kb/952951
  Drive CD - R or CD - RW Drive is not recognized as a recordable device
  http://support.Microsoft.com/kb/316529/

  Hardware devices not detected or not working - A Mr Fixit
  http://support.Microsoft.com/GP/hardware_device_problems

  Another possibility is that the cables are loose. Remove ALL power, then make sure that the cables in both
  ends. Remove and replace, do not just tight. For laptops, you can often clean power and
  contacts data with a pencil eraser.

  Some DVD players do not use the Windows default drivers so check with the manufacturer of system and
  manufacturer of device to see if there is a firmware or drivers for your drive if necessary.

  ===============================

  Step 2: You have disc problems as the CD/DVD is actually 4 discs in 1 case (CD & DVD
  Burn and CD and DVD read). So it is not unusual for 1 or 2 operational so that other parts
  do it right.

  Did you follow the Troubleshooting Guide for the reader who still does not work? There are
  the entries in registry that the troubleshooter does not solve and those who "might" be the cause.

  Check with your Maker system and a device for the two possible firmware updates and
  the correct registry entries for your car.

  Here are the keys that I of course are those in question - for the subkeys of the CD/DVD drive
  as there will be other subkeys in these keys. Do not forget to ask specific keys involved as well as
  the parameters.

  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\IDE

  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Hardware Profiles\0001\System\CurrentControlSet\Enum\IDE

  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\ {4D36E965-E325-11CE-BFC1-08002BE10318}

  -----------------------------------------------------------------------

  You can probably find more info here and maybe even the exact registry for your CD/DVD settings
  drive from someone with the same model.

  Forums - a lot of expert real help
  http://Club.myce.com/

  CD/DVD units
  http://www.myce.com/storage/

  Use DevManView to locate the CD/DVD in the registry (be careful and do a prior Restore Point)
  nothing change) - find the DevManView device and then make a right click on it free in RegEdit.

  DevManView - free - an alternative to the standard Windows Device Manager, which displays all the
  devices and their properties in flat table, instead of the tree viewer
  http://www.NirSoft.NET/utils/device_manager_view.html

  I hope this helps and happy holidays!

  Rob Brown - MS MVP - Windows Desktop Experience: Bike - Mark Twain said it right.