transactions

问题 TL;DR: Service method annotated with @Transactional(propagation = Propagation.NOT_SUPPORTED) Hibernate 5.0.4.Final: everything works as expected (method is executed without transaction) Hibernate 5.2.5.Final: javax.persistence.TransactionRequiredException: no transaction is in progress is thrown as a testcase for this issue I created a simple maven web app and the only change made in code (copy-paste from old working project) was Hibernate version bump in pom.xml Question: What is the proper

问题 I have the cloud function like so: exports.updateNewsCount = functions.database.ref('/channels/{channelId}/news/{newsId}/') .onWrite (event => { const channelId = event.params.channelId; const newsId = event.params.newsId; let CntRef = admin.database().ref('/channelDetails/' + channelId + '/newsCnt'); if (event.data.exists() && !event.data.previous.exists()){ return CntRef.transaction(function(current){ if (current){ console.log ('current is not null'); return (current || 0) + 1; } else {

问题 I am seeing some really surprising and frustrating behavior with Django testing. Model objects are being "found" by a related lookup, but no model objects exist. (I apologize for the weird description here...the behavior is bizarre enough that I don't know quite how to describe it. Do the objects exist? Do I exist? Do you??) I need them to exist, so I have a method in place that creates them if they don't exist. The problem is that on one line, Django finds that they do exist, and therefore

问题 I'm using Spring 2.5 transaction management and I have the following set-up: Bean1 @Transactional(noRollbackFor = { Exception.class }) public void execute() { try { bean2.execute(); } catch (Exception e) { // persist failure in database (so the transaction shouldn't fail) // the exception is not re-thrown } } Bean2 @Transactional public void execute() { // do something which throws a RuntimeException } The failure is never persisted into DB from Bean1 because the whole transaction is rolled

问题 I have been working on a winform app with Oracle 10g database which is using TransactionScope and wanted to modify the maxTimeOut value specified in machine.config file, my machine.config file is in the following location (I am using .net 4 for this app) C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Config Originally there was not anything specified for maxTimeOut in it, therefore it defaults to 10 minutes. In order to change it I have added the maxTimeout="00:00:10" value as seen below:

问题 Inside a BMT (using a UserTransaction ) I call a method on another stateless EJB. When I rollback this transaction, the entity created in the EJB method is not rolled back. I use EJB 3.1 with JPA 2.0. The transaction begins in method doTheTransaction() : @Stateless @LocalBean @TransactionManagement(TransactionManagementType.BEAN) public class TaskExecutor { @Inject private SomeEntityFacade someEntityEJB; @Inject private RandomEJB randomEJB; @Resource private UserTransaction ut; @Asynchronous

问题 I am trying to debug next oracle procedure: create or replace PROCEDURE CASE_6_TRANS_2 AS V_NUM NUMBER(38,0); BEGIN SET TRANSACTION ISOLATION LEVEL SERIALIZABLE; SELECT COUNT(AE.ID) INTO V_NUM FROM AUDIT_EVENT AE WHERE ID=10; COMMIT; --BREAKPOINT END CASE_6_TRANS_2; But when I want to see current transaction at breakpoint , the V$TRANSACTION table is empty. The documentation says: A transaction begins when the first executable SQL statement is encountered. An executable SQL statement is a SQL

问题 I have two stored procedures that I want execute wrapped in a transaction. For various reasons, I need to handle the transaction in my application code instead of within the database. At the moment, my code looks like this: try { using (SqlConnection conn = Connection()) { conn.Open(); using (SqlTransaction sqlTrans = conn.BeginTransaction()) { try { using (SqlCommand cmd1 = new SqlCommand("Stored_Proc_1", conn, sqlTrans)) { cmd1.CommandType = CommandType.StoredProcedure; cmd1.ExecuteNonQuery

问题 I am trying to debug next oracle procedure: create or replace PROCEDURE CASE_6_TRANS_2 AS V_NUM NUMBER(38,0); BEGIN SET TRANSACTION ISOLATION LEVEL SERIALIZABLE; SELECT COUNT(AE.ID) INTO V_NUM FROM AUDIT_EVENT AE WHERE ID=10; COMMIT; --BREAKPOINT END CASE_6_TRANS_2; But when I want to see current transaction at breakpoint , the V$TRANSACTION table is empty. The documentation says: A transaction begins when the first executable SQL statement is encountered. An executable SQL statement is a SQL

问题 Is it possible to extend the timeout of a transaction (with SQL Server) once the transaction has started? 回答1: The timeout is "external" to SQL Server, so SQL Server can not affect it. So "no" unfortunately 回答2: I doubt it, but you could rollback and retry. 来源： https://stackoverflow.com/questions/4723944/transactionscope-sqltransaction-timeout-extension