SharedAM validation - a separate transaction?

Similar Questions

• Make a separate transaction, but reuse the connection.

  Hello

  I use JDeveloper 11.1.2.3.0.

  I have a request, which uses a single Module of the Application.

  On each page of the application, in addition to the login page, I need to have a few buttons, which change the language and then update the language of the user in the database and validate the new language.

  The validation of these buttons should only commit the change of language in the table user and not must not commit other changes. So, I want to have these buttons to open a transaction that is isolated from the other.

  I tried to put these buttons in a taskflow bounded with a 'remote data control' and 'Always start a new transaction' options defined.

  This does not work probably because I have only a single application Module.

  If I add a second root Application Module things will work, but it will create an additional connection to the database.

  How can I use the connection of the first Module Application?

  Is it possible to do without the second Application Module?

  Edit: I wonder if it is necessary to place these buttons of translation in a separate taskflow. It will be easier to leave them on the page template.

  Kind regards

  Pamela

  Pamela, when you use a workflow with the remote data control and "always start a new transaction", this will create a second module of the application with its own connection. You don't need a second module of the application, the framework instantiate one for this case.

  What does not work when you tried it this way?

  Timo

• Validation of the transaction in OT, jdev Version 11.1.1.5.0 levels

  Hello
  I use Jdev version 11.1.1.5.0.
  I have a requirement of data validation in af:table the validation/registration.
  For this I use validator method in OT.
  
  Level of validation is,
  See running the transaction level.
  
  Ideally, this method should perform only at the time of the transaction.
  However, the method runs every time what current row has changed in the dashboard UI.
  
  Please help me...
  
  Thank you
  Nag

  You can try to override the beofrCommit method in the EntityImpl class
  something like this:

      @Override
      public void beforeCommit(TransactionEvent transactionEvent) throws oracle.jbo.JboException {
          if (put your condition)
              throw new JboException ("your error message");
          else
              super.beforeCommit(transactionEvent);
      }
  

• Validation of the transaction in the database adapter

  Hello
  
  When the validation occurs when a database adapter inserts a record.
  
  I have two process is db adapter to insert records and the second the db adapter to call the procedure for updating the records inserted by first calling card, but the records will be visible in the second card.
  
  Please advice, thanks in advance.
  
  Kind regards
  Abdou

  Yes because it is a single transaction, therfore you can restore in case the second fails.

  But if you make a dehydration, for example, wait, human task, receive activity then the first insert will be committed. so you will not be able to roll back. You will need to use a compensate activity.

  see you soon
  James

• Dehydrate and the semantics of Transaction

  I have read the documentation, articles, messages, etc. on the semantics of transaction in the bpel process in an effort to understand what database commit is performed. I'm a bit confused and I'm looking for comments on the following scenario.
  
  I have a bpel process that uses the correlation and the database updates using the DB adapter on an XA data source. An overview of high-level steps in the process is as follows:
  
  1. receive message entering - associate the true value with a correlation with the insider
  2. update a database using the DB adapter and a XA data source.
  3. choose an activity with an OnMessage who subscribes to the event and highlights the correlation using the correlation set in step 1.
  4. to stop the activity.
  
  I want the update in step 2 to commit to the database immediately. I don't want to wait for the upcoming correlated event/message. Dehydration will do that? A validation will automatically take place because of the async OnMessage activity? I have to call a new process with bpel.config.transaction = requiresNew bpel to run the tool?
  
  I use Oracle SOA Suite 11.1.1.6.0 and bpel 2.0.
  
  Thank you

  Commit the transaction to onMessage, when the reminder message comes back, it will resume the instance in a separate transaction. and complete this operation.

• Uncommitted transactions

  Hello

  I need to know if there is an Oracle query that allows me to view current (uncommitted) transactions

  I use this query:

   select t.start_time,s.sid,s.serial#,s.username,s.status, s.sql_id
   from v$transaction t, v$session s
   where s.saddr = t.ses_addr
  

  
  BUT I would like to know if there are uncommitted 3 days ago transactions.

  Thanks in advance!

  ground. Beach wrote:

  uncommitted transaction is an oxymoron.

  A transaction exist only after that VALIDATION was made.

  Huh? I think you have it backwards.

  A transaction exists only BEFORE a commit / rollback was granted and AFTER the first statement. So "no committed transaction is actually"redundant".

  Transactions - 11g Release 2 (11.2)

  Beginning of a Transaction

  A transaction begins when the first executable SQL statement is encountered. An executable SQL statement is a SQL statement that generates calls to a database instance, including DML and DDL statements and the SET TRANSACTION statement.

  . . .

  End of a Transaction

  A transaction ends when one of the following actions occurs:

  • A user a issues COMMIT or ROLLBACK statement without a SAVEPOINT article.

    In a commit, a user explicitly or implicitly requested that the changes as part of the operation be made permanent. Changes made by the transaction are permanent and visible to other users until a transaction is committed. The transaction is shown in Figure 10-1 ends with a commit.

  • A user executes a DDL command such as CREATE , DROP , RENAME , or ALTER .

    The questions implicitly database COMMIT statement before and after every DDL statement. If the current transaction contains DML, then Oracle Database first valid instructions the transaction executes and commits the DDL statement in a new single statement transaction.

  • A user normally leaves most of the utilities of Oracle database and tools, causing the transaction implicitly committed being. The validation behavior when a user disconnects is application dependent and configurable.

    Note:

    Applications should always explicitly commit or cancel transactions before the end of the program.

  • A client process terminates abnormally, causing to be implicitly rolled using metadata stored in the operating table and the rollback of the transaction segment.

  After the end of a transaction, the next executable SQL statement automatically starts the following transaction.

• Manage the CRUD operations in unique transactions

  Hello

  How can I manage the CRUD operations in single transactions using JTA? While each a separate transaction operations will not be created? Please provide examples for this topic.

  Thank you.

  Hello

  Yes, the transaction manager is implemented through the Java API of the Transaction (JTA).

  The JTA includes two main interfaces for the management of transactions, javax.transaction.TransactionManager and javax.transaction.UserTransaction.

  See: transaction manager

  And to use transactionManager, you need to inject exactly as you said.

  Why do a bit better with Demarcation of Transaction:

  TransactionDemarcation td = new TransactionDemarcation();
  boolean rollback = true;
  try {
    td.begin(getTransactionManager());
   // all changes in items of repository
    rollback = false;
  } catch (TransactionDemarcationException e) {
    throw e;
  } finally {
    try {
    td.end(rollback);
    } catch (TransactionDemarcationException tde) {
    throw tde;
    }
  }
  

• transactions and failure of DML statement

  Hello

  Say I have 10 DML statements as part of my operation and the 9th one fails (and I have no to autocommit).

  Is it possible to have an exception that deals with this and 10th instruction and allow the validation of the transaction, or the whole operation should be cancelled?

  Thank you.

  Your session will automatically rollback the statement failed. All prior statements remain uncommitted. What you do then, it's up to you.

• Browser does not refresh page after validation!

  Hello all, I use JDeveloper 11.1.2.3.0

  I have a big problem here. I create a simple page and insert a form, a createInsert button and a button of validation , for example. I run this page and all is well. I create a new record, fill in the form, and then validate. Right now if I press F5 to reload the page, the browser asks me confirmation "to view this page, Firefox must send information that will repeat any action (for example, a search or order confirmation) that was carried out earlier." I do not understand why he should repeat any action, I checked for Sales transactions after the validation operation and transactions are clean. If I leave this page to another and back to the first it works fine, F5 refreshes without problem.

  If I have a table with multiple lines and that I have updated first line for example and then click on the third line and then perform a refresh (Confirm on above message), the third row will get the all the information of the first line...

  Does anyone know how to fix this?

  OK I found the real problem and the solution to it. As I said the reopening of the page brings no problem, but only to hit F5 don't. My buttons 'submit' and 'committed' a 'partialSubmit = false' who must perform a total of pages submitted in this case. Apparently this is not "detected" by the browser when you press F5, although the presentation is made. Change "partialSubmit = true' the buttons did the trick." Tung

• Behavior of batch writeback in level of EP partition transactions

  Hello

  We use EntryProcessors to perform updates on several entities stored in the cache partition. According to the documentation, consistency manages all updates in a 'sandbox' and then atomically commits them to the carrier of the cover sheet.

  The question is, when using writeback, ensures consistency all updated in the same "transaction level partition' entries will be present in the same operation"storeAll?

  Once again, according to the documentation, the behavior of lazy writer thread is this:

  • The thread is waiting for an entry ripe become queued.
  • When an entry reached its climax, the thread removes all blackberries and soft-ripe entries in the queue.
  • The thread then writes all the entries of blackberries and mulberries soft via store() (if there is only the single mature entry) or storeAll() (if there are several entries of blackberries/soft-ripe).
  • Then, the thread again (1).

  If all the entries updated in the same transaction level partition become ripe or soft mature at the same time they will be present in the operation of storeAll. If they are not soft-blackberries/mulberries at the same time, they cannot all be present.

  So, everything depends on the behavior of the validation of the transaction of partition level, so all entries postmarked even for the update, they will all become ripe at the same time.

  Is anyone know what behavior we can expect in this regard?

  Thank you.

  Hello

  This comment is relevant to 3.7.1. I guess the same thing remains can be found in paragraph 12.1, but have not checked yet.

  There is no contract between "transactions level partition" and cache store.

  In practice, in the case of writing-although

  -storeAll() is never called, updated entries are transferred to call store() one by one.

  writeback cace

  -It works according to documentation (which you cited) without consent and limits 'partition level transactions

  Kind regards

  Alexey

• How to increase the time of validation in oracle?

  Dear Oracle Guru-
  
  My database is OLTP system.
  
  Oracle Database 11 g Enterprise Edition Release 11.2.0.2.0 - 64 bit Production
  PL/SQL Release 11.2.0.2.0 - Production
  CORE Production 11.2.0.2.0
  AMT for Linux: Version 11.2.0.2.0 - Production
  NLSRTL Version 11.2.0.2.0 - Production
  
  The time of the validation of each transaction is currently 20-30 milliseconds. Is there another way, we can improve the time of validation?
  
  I understand that the time of validation is quite reasonable. But is there another way, we can inprove the moment of validation?

  user8904001 wrote:
  Dear Oracle Guru-

  My database is OLTP system.

  Oracle Database 11 g Enterprise Edition Release 11.2.0.2.0 - 64 bit Production
  PL/SQL Release 11.2.0.2.0 - Production
  CORE Production 11.2.0.2.0
  AMT for Linux: Version 11.2.0.2.0 - Production
  NLSRTL Version 11.2.0.2.0 - Production

  The time of the validation of each transaction is currently 20-30 milliseconds. Is there another way, we can improve the time of validation?

  I understand that the time of validation is quite reasonable. But is there another way, we can inprove the moment of validation?

  But what exactly is the time you are looking for? The reason for asking is that now the time is 20ms so exactly what point would be a suitable time? For the improvement of the validation, a possible solution would be to move the files, redo log on faster SSD support, but it's a statement very very generic and should be taken with a grain of salt.

  HTH
  Aman...

• transactions table

  In the concepts of Oracle 11 g R2 is indicated that "the database uses an operating table, also called a list of self-dealing (ITL), to determine if a transaction is not validated when the database has begun to change the block. The block of each block of the segment header contains an operating table. «by http://download.oracle.com/docs/cd/E11882_01/server.112/e16508/consist.htm#i13945 but the link provided for the transactions table that points of sentence in the box of glossary and he says: "transactions table: the data structure in a rollback segment that contains the identifiers of the transaction of operations using the rollback segment.» »
  
  In the same folder to another chapter (here http://download.oracle.com/docs/cd/E14072_01/server.112/e10713/transact.htm) says "A transaction ID is unallocated until a slot table undo segment and transaction are allocated, which occurs in the course of the first statement DML."
  
  In order to present the transaction is located in the rollback segment (in the header I guess)? This transaction table provides information such as: the financial statements included in a transaction, pointers to undo blocks for a transaction, commit State, commit YVERT?
  
  If in the first sentence, they talk abot LAUGHS, LAUGHS as blocks of information on the State of validation of the transaction?

  A1: No, it is in the fixed area of the SGA. (There are more components to the LMS than just different pools).

  A2: It is there no Q2.

  A3: A slot is allocated in the rollback segment header. This identifies the transaction via the XID. Space to write the actual cancellation records, enter the body of the undo segment, and this piece of spaced is indicated by information in the header undo slot.

  A4: Yes, all these scriptures initially arrive only in the redo log buffer. Before that any block can be updated, no matter if it is a block cancellation or a block of data, the change must be protected by redo.

  A5: Yes, the ITL slot has the XID, so it literally means the transaction. This is how keep us track of the operation 'show interest' in this data block.

  A6: Don't know what you're asking here. Yes, only the updated data is written to cancel, and any changes made by a specific transaction are written to the same rollback segment.

  Hope that answers all your questions,

  -Mark

• Flashback on the transaction request of $ v

  Hi all
  
  If I know the RCS just before the validation of the transaction after the transaction is committed, I can use the flashback transaction query of $ v to get the information about the transaction, such as undo segment undo number block, used.
  
  Here's the unit test, I use dbms_lock.sleep (6) because the smon_scn_time is updated every 6 seconds (Note ID: 281510.1)
  the problem is that the query flashback on the v$ transaction doest not working, no back to the last line.
  any advice?
  

  sys@SID10G> select * from v$version;
  
  BANNER
  ----------------------------------------------------------------
  Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Prod
  PL/SQL Release 10.2.0.4.0 - Production
  CORE     10.2.0.4.0     Production
  TNS for MacOS X Server: Version 10.2.0.4.0 - Production
  NLSRTL Version 10.2.0.4.0 - Production
  
  sys@SID10G> drop table t purge;
  
  Table dropped.
  
  sys@SID10G> 
  sys@SID10G> create table t as select * from all_objects where rownum <= 1000;
  
  Table created.
  
  sys@SID10G> 
  sys@SID10G> exec dbms_lock.sleep(6);
  
  PL/SQL procedure successfully completed.
  
  sys@SID10G> 
  sys@SID10G> update t set object_name = lower(object_name);
  
  1000 rows updated.
  
  sys@SID10G> 
  sys@SID10G> --save the current scn for later flashback query
  sys@SID10G> col scn new_value _scn
  sys@SID10G> 
  sys@SID10G> select dbms_flashback.get_system_change_number scn from dual;
  
         SCN
  ----------
     6397848
  
  sys@SID10G> 
  sys@SID10G> select xidusn, xidslot, xidsqn, used_ublk from v$transaction;
  
      XIDUSN    XIDSLOT     XIDSQN  USED_UBLK
  ---------- ---------- ---------- ----------
           8         12       4725          8
  
  sys@SID10G> 
  sys@SID10G> select dbms_flashback.get_system_change_number scn from dual;
  
         SCN
  ----------
     6397848
  
  sys@SID10G> 
  sys@SID10G> commit;
  
  Commit complete.
  
  sys@SID10G> 
  sys@SID10G> exec dbms_lock.sleep(6);
  
  PL/SQL procedure successfully completed.
  
  sys@SID10G> select xidusn, xidslot, xidsqn, used_ublk from v$transaction as of scn &_scn;
  old   1: select xidusn, xidslot, xidsqn, used_ublk from v$transaction as of scn &_scn
  new   1: select xidusn, xidslot, xidsqn, used_ublk from v$transaction as of scn    6397848
  
  no rows selected

  Published by: Sidney Chen on August 7, 2011 15:33

  Please see,
  http://download.Oracle.com/docs/CD/E11882_01/AppDev.112/e17125/adfns_flashback.htm#g1703502

  You cannot recover data in a view of dynamic performance (V$). A query on this point of view always returns the current data.

  Aman...

• New Taskflow-ADF transaction acquires a new JDBC connection?

  Hello
  
  I would like to learn more about ADF Taskflow transaction regarding the JDBC connection.
  
  TF1-(contains) - page1 and call for tf2
  TF2-(contains) - page 2
  
  Page1 - search objects
  Page 2 - edit objects
  
  
  I have two pages in two taskflows, first taskflow doesn't create any transaction but the page1 in tf1 shows a searh for objects screen. I want to use the transaction behavior of ADF TF for tf2 which is called TF1.
  
  My tf2 contains a page to change objects, if I put the new transaction as a transaction of TF for tf2 behavior.
  
  Is it really to acquire a new JDBC connection?
  
  I'm really grateful if anyone can help me with this.
  
  Thank you
  Sunil.

  Simple answer: Yes.

  Long answer:

  Think when you connect to say database using a tool such as SQL Developer, opening of the SQL worksheet. In this SQL one spreadsheet there is only one connection to the supporting db commit / rollback. You can perform multiple DML statements, and then commit or rollback, followed by several DML statements, then commit and rollback. Basically, it's a connection supported a single transaction at a time, with several transactions sequentially one after another. What you cannot do in the single SQL worksheet is to have several operations going at the same time, you need to spawn separate leaves SQL with separate connections.

  Therefore, the concept of a connection and transaction are related 1 to 1. If you say your BTF you want a new transaction, he must take a new connection, to take charge of the transaction. Simple as that.

  At the end of the day, therefore the features planned.

  Now I detect your question, you do not want this behavior, but I don't know if you understand the concept of transactions, you will need to answer with a description of what you want to achieve... However, if you want a new separate transaction for your BTF, it requires a connection.

  CM.

• Is it a "trigger" after validation?

  Hi all.
  
  I want to do some complicated logics (can take a long time) after a row of data is inserted and committed successfully.
  
  "Lead them" in Oracle to meet my needs?
  
  I know that the trigger for insert/update normal is executed before the validation of the transaction. But I can't let users front end waiting so long time to the end of the logic.
  
  Thank you very much.

  then submit a job from within the trigger executes a procedure and let the procedure complicated logic.