Synchronous or asynchronous mode

Similar Questions

• Difference b/w WebService synchronous and asynchronous WebService?

  Hello friends... !
  What are the main differences b/w WebService synchronous and asynchronous WebService? What is the information essential to their topic about SOA?

  Hello

  There is no difference between Asynch and sync in terms of flow, or good business logic
  the only difference is in web synchronous service feels the responsibility to give the answer to the applicant
  but asynchronous, you call the web service to give the answer...

  more there is a limit for a time limit for the bpel process to be carried out for synchronous. . but is not asynchronous. .

  There is also a slight difference in the wsdl. .

  Try it for yourself. .

  Thank you

• CDC Logminer synchronous and asynchronous

  I have to configure CDC Logminer.
  My source is oracle.
  I want to know what is the difference between CDC Logminer synchronous and asynchronous.
  And in the oder to configure do them I need to do anything beside the database other than in ODI. If yes what should I do?
  And also want to know what I have to do in ODI also
  
  I'm really grateful if anyone can help me with this.
  Thanks in advance
  
  Published by: user10390682 on 27 Sep, 2010 12:19

  Synchronous LogMiner is like putting triggers on tables system, be careful. If you are using asynchronous, logminer will find the changes, but there may be a time lag before you - when the db allows to do its stuff logminer, could be up to two minutes later that I saw, if the database is busy.
  You don't need to do something else in the database, and in ODI you use just the "Journalisé Data Only" box on the interface to pull changed lines.

• Difference between synchronous and asynchronous service (Process BPMN).

  When we create new BPM process jdeveloper gives 4 options including easy and synchronous service.

  I want to know how they differ logically because the two models look same!

  In an asynchronous process, the starting node is exposed as a "unique sense", so if you see the wsdl for this (port type section), you will see only the entries and no results. This means that the appellant is not expected that the process at the end. In a synchronization process, the web service to the starting node interface is "track two", request/response...so you will see both and input and output in the section type of port. the appellant awaits the response of the process.

• Synchronous vs. asynchronous

  Hello
  
  I get request timed out of exception when you call a Synchronous BPEL service asynchronous BPEL service.
  
  Am in the phase of recognition and created an asynchronous bpel with a delay of 5 seconds and named using a synchronous BPEL but still am getting an error timedout
  The process called async is finished after a wait of 5 seconfs, but even in this case the synchronization process is waiting for the answer
  
  All citing the same asynchronous service using an another async bpel service its works very well.
  
  why I get this error while an async bpel service is called using a synchronization service
  
  Please help me understand

  Large.
  If you can mark my answers as useful or response please.

  See my explanation here:
  Re: Unable to receive the message of an asynchronous service - BPEL

  Arik

• Synchronous and asynchronous BPEl process

  Hi all
  
  1. when we can create a synchronous bpel process
  
  2. when we create a synchronous bpel process
  
  3. when we can create empty bpel processes
  
  4. how to deploy a project using a script? with the example.
  
  Thanks in advance...

  4. how to deploy a project using a script?
  http://jianmingli.com/WP/?p=2584

  1. when we can create a synchronous bpel process
  Synchronous process must create in case if you expect the answer immediately.
  e.g. it is useful in case if you use a card database as partner link in the BPEL process. Because the data base of operation of the adapter used to give the answer immediately.

  2. when we can create asynchronous bpel process
  Asynchronous process must create in case if you when will come answer are not have limitation in time.
  Example:-assume that if you have a single loan process in which we are citing some of the webservices (ex-United Star ready, loan HDFC) who will send interest charges in its response, but in this case the answer can come at any time. Until that time there need to wait an indeterminate BPEL process. If the BPEL Sync process will be used in the above case, then the BPEL process will expire and which will report to the failed State.

  3. when we can create bpel processes empty
  Define the Service later: Select this option to create an empty BPEL process service component without activities.

• DBMS_CHANGE_NOTIFICATION - synchronous or asynchronous?

  I couldn't find the information how the change notification mechanism is being implemented. It is synchronous as triggers or asynchronous as from newspapers in recovery? The important thing is that I don't want a user to wait that the Reminder Manager has completed its work.
  
  Someone knows something about this, or has any idea where I could find this information?

  From Tim Hall article: http://www.oracle-base.com/articles/10g/dbms_change_notification_10gR2.php

  "Notifications are processed asynchronously, it may take a few seconds for them."

  That seems plausible to me, since you need to set job_queue_processes to value non-zero.

  Kind regards
  Rob.

• A question about synchronized waiting (block mode) for CPI in BB

  Hello

  I have such a scenario.

  Process a need to send a message to process B, in the send method, we need to wait until it receives the

  notification of process B that B has processed the message.

  All I know is that using ApplicationManager PostGlobalEvent() can send a message to B. But it is non-blocking mode.

  For example, after PostGlobalEent(), A must wait an appropriate event. There may be an another globalevent in A listener to listen on

  the notification.

  Thus in A, we will wait indefinitely until the listener has defined a status which a no need to wait any longer.

  I think that Infinity waiting consumes too much battery of BB.

  Is there a better method to avoid this problem constantly wait?

  In Windows Mobile, waitForSingleObject can easily deal with such a scenario. (blocking for the notification mode)

  I don't know if there is a similar way in BB.

  Any help?

  Sorry, I misread your original message and began to talk about the broader and more complicated case.

  You seem to want to send a message and it will hang until it is processed. You can do this as follows. You basically need a flag that can be set and queried in a thread-safe way, and it should also be possible to block until the indicator is defined without having an impact on the battery. The solution is simple. You need a flag (for example, a Boolean variable) and a monitor object. For example, you can put a Boolean field in the class of your message and use the message as a monitor instance. The beneficiary will be the message, treat it, acquire the monitor, set the flag and call notifyAll() on the monitor. The sender can thus post, acquire the monitor and loop until the flag is set, while citing wait() on the screen after each failure audit. This will have the effect of blocking the sender if the message has not yet been processed and that, until the message is processed. Waiting for a monitor is very cheap in what concerns the use of the battery, so don't worry about this.

  You can extend the simultaneous construction above to have a flag + result/exception and you get something similar to java.util.concurrent.Future of J2SE, I was talking about in my previous posts.

  P.S. If the processing of the message does not have a lot of time, I suggest that you consider the much simpler solution of using Application.invokeAndWait.

• Meet a synchronous to asynchronous BPEL (how?)

  Good afternoon!
  
  Have an asynchronous BPEL with an exposed Web service.
  
  I need to get back a BPEL any information at this point, it is called (for example a chat ID). And then continue its own asynchronous process.
  
  Is this possible?
  
  Tank You!

  Too many questions and I'm really not sure about the answers. Do your synchronization process rather than async. In the process, you add replyOutput after the receive activity. Continue to add activities below replyOutput. If your synchronization process includes elements async as a human task, she automatically will behave like an asynchronous process and gets dehydrated in these activities. How about this?

• Designer - asynchronous vs synchronous

  Groupies of Oracle greetings colleagues,
  
  I have worked with BI Publisher EA for the last few months and I would like to hear the thoughts of the community around the asynchronous mode option that is available when you design a report.
  
  The "Report Designer's Guide to Oracle Business Intelligence Publisher" (page 2-13) States the following:
  
  Asynchronous mode
  
  Default: no permit.
  
  Reports to be run asynchronously using a single thread
  Run the report when it is run in the report viewer. This
  allows BI Publisher cleanly finish the thread if a user
  cancels the execution of the report. Note that there is
  impact on performance when you enable this property.
  
  Which option would you choose? Why? or maybe a better question is under what circumstances would you turn on this option?
  
  Published by: OdinsWrath on March 8, 2012 15:19

  You should ask your question in the forum BI Publisher:

  BI Publisher

• How to make the instance of oracle bpm asynchronous process?

  I want to create a bpm processes that start as asynchronous. Can someone tell me how to do it and test it?
  Should I first define the structure of data/xsd? Thank you

  It's pretty easy.

  Double-click the Message of your BPM process start event and then go to the implementation tab expand the "Advanced" pane by clicking on the icon "+". Here you will see a button that allows you to make your process "Synchronous" and "asynchronous". Choose the mode you want.

• peut any mode async explian one in Oracle dataguard

  Hello

  IM aware of the mode of synchronization but I am unaware of the asynchronous mode, it actually happens... When I read several articles but I coud't understand what happened really

  for maximum performance is Aync mode

  availability of Max and max protection in sync mode

  right...

  Yes... It's true!

  -Jonathan Rolland

• New to the product and the need to know the basics. Help, please

  I'm new to the product, and we are evaluating. Here's investigations. I hope you can help me:
  1. does it support active/active or active/passive controllers?
  2. What is the minimum time of OTN of replication in asynchronous mode? The minimum data lost can I define?
  3 support for technology: hybrid, SSD, FC, SAS, SATA, 10 GBe?
  4. data protection / snapshot is supported?

  These questions refer to the NAS DELL products, please forgive me if I chose a bad TAGS.

  EqualLogic is active / standby (only 1 controller is online at any time).

  Minimum replication time is 5 minutes, unless you go the synchronous replication, but it should not be used over long distances (higher latency networks).

  EqualLogic's iSCSI only. For iSCSI 1Gbit units are all RJ45 ports. 10 Gbps units have RJ45 ports and ports of SFP +. You can connect the two, but only 1 port is used at a time (not sure how the new PS6210 only SFP + and the RJ45 failover because it has 2 of each on each controller).

  EqualLogic supports indeed of snapshots. With the host integration tools (available for Windows, VMware and Linux (some limitations on the new OS versions (mainly Windows 2012 R2 and RHEL 6.3 and later versions don't are not supported at this time exact (2014-01-22))) you can use the so-called chip-copies.) These IO quiesce to the volume before you say the table to take the snap. HITKIT Microsoft supports SQL, Exchange, Hyper-V, and I think that Sharepoint. I've personally used only the HITKIT with Hyper-V, but in Hyper-V lets it roll back a single virtual machine on a volume, even if there are several on the volume in question.

• Repeat the process of archiving for MAX PERFORMANCE in 11g

  Hello Evertyone,

  When I go through documents, source: http://docs.oracle.com/cd/B19306_01/server.102/b14239/log_transport.htm#i1178539

  Redo the archiving process: LGWR and ARCH (MAX PERFORMANCE)

  Network Transmission mode: SYNC If you are using ARCH process

  Oracle Data Guard 11 GR 2 Administration Guide beginner by Emre Baransel

  -I see this summary: transport ARCH is not recommended because it offers no advantage.

  What advantage LGWR provides rather than the ARK in MODE PERFORMANCE MAX?

  In which clearly defined doc information?

  Hello

  1. the Oracle 10 g documentation link you have provided that it be said that (it would be even other oracle docs)

  Allows maximum performance mode you either set the LGWR and ASYNC attributes or set the ARCH attribute on the LOG_ARCHIVE_DEST_ n parameter for the standby database.

  2.i hope you know the difference between the role of process LGWR and ARCH from the perspective of the database

  3 by default, redo transport services use some ARCn process to archive log files to redo online on the primary database. Archiving ARCn processing supports only the protection of the level of maximum data performance in Data Guard configurations

  Check-in occurs when a log switch occurs on the primary database:

  • On the primary database, after the ARC0 process archives successfully redo online newspaper the local destination ( LOG_ARCHIVE_DEST_1 ), the ARC1 process transmits redo leave log files local archived redo (rather than the online redo logs files) to the remote standby destination ( LOG_ARCHIVE_DEST_2 ).

  By coming to the LGWR

  You can possibly afford to restore transport services using process LGWR for transmitting data to roll forward to distant destinations.

  Using the LGWR process differs from the ARCn processing (described on the point 5.3.1), because rather than wait for online redo log to the primary database and then written archived all again to connect to the destination remote all at once, the process LGWR selects a log file waiting for Redo on the standby site that reflects the sequence of journal number (and size) of the current log file recovery online primary database.

  Then, again being generated at the primary database, it is also transmitted to the remote destination. Transmission to the remote destination will be either synchronous or asynchronous, depending on whether the SYNC or the ASYNC attribute is set on the LOG_ARCHIVE_DEST_ n parameter. Synchronous LGWR treatment is necessary for maximum protection and maximum availability of data protection patterns in Data Guard configurations

  4. it is not on the recommendation, its option to use - its role and how it works with over role, you understand. Oracle never says it's bad or wrong (you decide)

  -HTH

  -Pavan Kumar N

• Is this declaration for the creation of correct active standby pair?

  Hi, I have two servers, one is "baal" and the other is "diablo".
  I want to create a pair of active standby with the RETURN of TWOSAFE and disable the BACK after that 5 times timeout happens and resume BACK if less than 8 ms recognize.
  I do not sure if 8 ms is reasonable if the starting node is far behind the active node (assuming the starting node is to hardware failure).
  Here's my response:
  --------------------------------
  PAIR of EVE ACTIVE CREATE eppdb WE "baal", eppdb ON "diablo."
  RETURN TWOSAFE
  STORE eppdb WE 'baal '.
  DISABLE THE BACK EVERY 5
  CURRICULUM VITAE OF RETURN 8;
  -------------------------------
  Is what I'm not clear on the key word "STORE."
  I noticed that there are a lot of 'STORE' after RETURN of TWOSAFE and make that confused me for a while.
  If this assertion is false, please correct me.
  
  Thank you.

  In fact, these options apply to the store level so that the statement is as follows:

  CREATE A PAIR OF ACTIVE STANDBY
  eppdb WE 'baal', eppdb ON TWOSAFE of RETURN "diablo."
  STORE eppdb WE 'baal '.
  DISABLE THE RETURN ALL 5 HP BACK 20
  RETURN SERVICES TURNED OFF WHEN THEY ARE ARRESTED
  SUSTAINABLE COMMITMENT ON
  COMMIT LOCAL ACTION VALIDATION
  WAIT BACK 30 TIMES
  STORE eppdb ON "diablo."
  DISABLE THE RETURN ALL 5 HP BACK 20
  RETURN SERVICES TURNED OFF WHEN THEY ARE ARRESTED
  SUSTAINABLE COMMITMENT ON
  COMMIT LOCAL ACTION VALIDATION
  WAIT BACK 30 TIMES;

  All these options and what they mean are described in detail in the (very good) documentation. I would recommend that you read in order to understand that you configure here... Just a summary.

  Whenever the wait isn't available, application commits will experience timeouts (TT WARNING 8170). Request code must be prepared to receive and respond to this warning. Finally (according to the options DISABLE RETURN and RETURN WAIT [see below]) TT come back asynchronously and wait times stops. Once sleep is available and the stores are back in sync TT will increase from TWOSAFE BACK mode once again.

  DISABLE BACK every 5 - turn off the twosafe return (i.e. emergency in asynchronous mode) treatment after 5 consecutive times (each timeout will be 30 seconds)

  BACK to the TIME of WAITING 30 - wait up to 30 seconds (a very long time) for recognition in return for service to the peer

  The combination of these two parameters means that in the event of network failure or the eve past active offline will be waiting for about 150 seconds (5 x 3) before disabling the twosafe return processing. During this time of transaction request will be and experience timeouts. I would suggest smaller values such as 2 and 10 maybe but only t = OU can decide what is reasonable for your environment.

  SUSTAINABLE if ENGAGING ON - whenever the return services are then disabled, force all commits to be sustainable (synchronous disk). This will degrade performance, but provides continuous data protection when the instance of relief is not available. If you don't want this feature so do not configure (but then when the watch is not available you are exposed to data loss if the assets fails).

  RETURN SERVICES OFF when THEY are ARRESTED - disable services return (spend in asynchronous mode) each time the replication agent stops.

  LOCAL validation ACTION COMMIT - if a validation Gets a time-out warning (TT8170) then the transaction status is uncertain. The application can choose to engage locally (allowing it to continue the treatment), in which case the txn is committed. will be added to the queue of replication for a (possible) retransmission in asynchronous mode. It is the recommended behavior and is defined by this option. The other option is NO ACTION, which is also the default value. With this option, the application must implement the logic for its own decision, and then call a few specific TT builtin functions to decide how to deal with the uncertain state. This adds significant complexity. Until the application makes a decision, it is impossible to continue.

  See the documentation for more information.