rollback

I'm using Windows 7 and for the life of me I cannot figure out how to call the rollback function on appcfg.py. All I want to know is what to type into the command prompt so I can rollback my app. The rollback command can rollback a transaction on the server, but you are unlikely to need to use that unless an update of your app failed for some reason. You should be getting some feedback from appcfg.py that such an action is required. Is that what you want to do? If so, just open a command prompt and type appcfg.py rollback . Otherwise, please let us know what you are trying to accomplish by

I have transaction log file that goes back 6 months. I need to roll back everything that happened after 5/20/2013 from a database. Can anyone please enlighten me on how to do this? First of all, copy the database MDF and LDF files. Better safe than sorry The database can be restored to a point in time in SQL Server 2008R2 , also. There's no need to create a transaction log backup first, it'll be done automatically by SQL Server. You can find more about the log-tail backup here: Tail-Log Backups Select to restore the database in the database context menu Leave Database as Source. Click Timeline

string[] usersToAdd = new string[] { "asd", "asdert", "gasdff6" }; using (Entities context = new Entities()) { foreach (string user in usersToAdd) { context.AddToUsers(new User { Name = user }); } try { context.SaveChanges(); //Exception thrown: user 'gasdff6' already exist. } catch (Exception e) { //Roll back all changes including the two previous users. } Or maybe this is done automatically, meaning that if error occurs, committing changes are canceled for all the changes. is it? Shimmy OK I created a sample a application like the example from the the question and afterwords I checked in the

I have a table create table testtable( testtable_rid serial not null, data integer not null, constraint pk_testtable primary key(testtable_rid) ); So lets say I do this code about 20 times: begin; insert into testtable (data) values (0); rollback; and then I do begin; insert into testtable (data) values (0); commit; And finally a select * from testtable Result: row0: testtable_rid=21 | data=0 Expected result: row0: testtable_rid=1 | data=0 As you can see, sequences do not appear to be affected by transaction rollbacks. They continue to increment as if the transaction was committed and then the

使用@DataSet的时候，unitils使用的事务管理器必须在spring的配置文件中定义。 <bean id="dataSource" class="org.unitils.database.UnitilsDataSourceFactoryBean" /> 否则@DataSet会使用unitils的事务管理，而在测试方法里操作业务DAO会使用spring的事务管理，造成的后果是操作DAO生成的数据可以回滚，但是@DataSet导入的数据不能回滚。 来源： oschina 链接： https://my.oschina.net/u/719192/blog/173642

Here is my problem : I'm running a batch on a Java EE/Spring/Hibernate application. This batch calls a method1 . This method calls a method2 which can throw UserException (a class extending RuntimeException ). Here is how it looks like : @Transactional public class BatchService implements IBatchService { @Transactional(propagation=Propagation.REQUIRES_NEW) public User method2(User user) { // Processing, which can throw a RuntimeException } public void method1() { // ... try { this.method2(user); } catch (UserException e) { // ... } // ... } } The exception is catched as the execution continues

How can I undo the most recently executed mysql query? Vimard If you define table type as InnoDB, you can use transactions. You will need set AUTOCOMMIT=0 , and after you can issue COMMIT or ROLLBACK at the end of query or session to submit or cancel a transaction. ROLLBACK -- will undo the changes that you have made Palantir You can only do so during a transaction. BEGIN; INSERT INTO xxx ...; DELETE FROM ...; Then you can either: COMMIT; -- will confirm your changes Or ROLLBACK -- will undo your previous changes Basically: If you're doing a transaction just do a rollback. Otherwise, you can't

I need to make MySQL server to rollback transaction immediately after its client disconnected, because each client works concurrently. The problem can be reproduced like these (using an innodb table type) On Client A: START TRANSACTION; SELECT MAX(ID) FROM tblone FOR UPDATE; #... then disconnect your connection to the server On Client B: START TRANSACTION; SELECT MAX(ID) FROM tblone FOR UPDATE; #... lock wait time out will occur here I had set MySQL's server option like innodb_rollback_on_timeout and using mysql's client mysql --skip-reconnect on both client. I tried this using one server and

Given an example of calling two web services methods from a session bean, what if an exception is thrown between the calls to two methods? In the case of not calling the web services the transaction will rollback and no harm done. However, the web service will not rollback. Of course, even with a single web service there is a problem. While this is a generic question I am interested in solutions having to do with EJB session beans. An easy and customized answer would be to add a special "rollback method" to the web service for each "real functionality" method. What I am asking for is some