transactions

问题 In HSQL to change TRANSACTION CONTROL there can't be any active transactions. Flyway, in turn, after committing migration X and before executing SQL from migration X, sets autocommitt=false and executes some of its own statements. So if the migration contains SET DATABASE TRANSACTION CONTROL statement it will wait for those uncommitted statements forever causing application to hang. (Side note: The statements executed by flyway before migration varies from version to version e.g. in 1.7 that

问题 I have a next code: class ProcessHandler : IHandleMessages<StartProcess> { public IBus Bus { get; set; } public void Handle(StartProcess message) { //some long living process (over 3 min) Bus.SendLocal(new SameMessage()); //get error here } } error message: The operation is not valid for the state of the transaction. stack trace: *at System.Transactions.TransactionState.EnlistVolatile(InternalTransaction tx, IEnlistmentNotification enlistmentNotification, EnlistmentOptions enlistmentOptions,

问题 Do you know a good example somewhere for this? What I would like is the following: using(IUnitOfWork uow = UnitOfWork.Start()) { repositoryA.Add(insanceOfA); repositoryB.Add(instanceOfB); uow.Commit(); } But this case is too ideal, because what I also want is multiple UnitOfWorks (per presenter in most cases, and this is not for a web app). In that case, how will repositories know which UnitOfWork to use if I don't give them that explicitly like repository.UnitOfWork = uow; My goal is to have

问题 I know that opening a transaction , waiting for user input and the carrying on with a transaction is a very bad way of programming. However it is required for a piece of coursework I am doing - we are not allowed to alter the table which has been given to us. I am using a database access class which has a runQuery and update method. To use a transaction I have created a new method called commit transaction - public static void commitTransaction(String SQLStatement) throws SQLException,

问题 HiAll, I was confused by the EclipseLink for Tomcat documentation saying: Limitations to JPA: No @PersistenceContext injection of a container managed persistence unit is available - use Persistence.createEntityManagerFactory(JTA_PU_NAME) and, also by this question&answer: but the typical JPA configuration in Spring looks like this, so you don't need to create EntityManager manually : @PersistenceContext private EntityManager em; So, the question is: may I use this annotation

问题 Follow this answer I am try to implement using transaction to monitor entire Firestore subcollection for new document added. Basically I only want write new document to subcollection if there is only one document. I need use transaction to avoid race condition resulting in >2 document in subcollection. Max should be 2. How to use transaction to monitor document added to subcollection? I am try long time to do but cannot solve. I am experiment use iterate through subcollection for document but

问题 A few days ago I asked this question in stackoverflow and ASP.net forums. the answer which I got was "No, this is not possible. Transactions cannot go past web service boundaries" Are there any transactions around multiple webservice calls? but in ASP.net forum I got the answer below: http://jalpesh.blogspot.com/2010/05/using-transactions-with-linq-to-sql.html it's offering system.transaction . what is your suggestion about it? 回答1: Are there any transactions around multiple webservice calls?

问题 I’m getting a "ResultSet is closed" exception in the Quartz scheduler after migrating our infrastructure from JEE6 to JEE7. Using software: WAS: 9.0.0.10 DB2: v11.1.4.4 DB2 JDBC: 11.1.3_4.22.38 (the same behavior with the 11.1.4.4) JPA: hibernate-jpa-2.1-api: 1.0.2.Final JTA: 1.2 Spring: 5.1.4 Hibernate: 5.2.9 Quartz: 2.3.0 Problem: Quartz lib produces “result set is closed” jdbc exception in the StdJDBCDelegate#selectTriggersForJob() . Configuration: Quartz is configured to use non

问题 I'm experimenting with transactions for the first time in mySQL. I am wondering if it is safe to use mysqli_multi_query for this purpose. That is, can I assume that if any of the SQL statements fails, everything will be rolled back? $query = " START TRANSACTION; (a bunch of SQL statements) COMMIT; "; if (mysqli_multi_query($connection, $query)) { do { if ($result = mysqli_store_result($connection)) mysqli_free_result($result); } while (mysqli_next_result($connection)); } Thanks, 回答1: Yes,

问题 I have Mysql5.5 on windows system. Since past 1 month it is running slow. Here is the query which are running the most: begin update roomlogs set roomlogs.exitTime = ptime,roomlogs.`status` = 1 where roomlogs.netId = pnetid and roomlogs.`status` = 0 and roomlogs.enterTime>=DATE(ptime) and roomlogs.enterTime<DATE(ptime) + interval 1 day; INSERT into roomlogs (roomlogs.roomId, roomlogs.netId, roomlogs.enterTime, roomlogs.exitTime, roomlogs.hidden, roomlogs.checkinId) value (pRoomId, pnetid