rollback

问题 I'm pretty new in T-SQL and I'm in trouble with some huge scripts with transactions, cursors and storage procedures. So, my code is something like this (this code is just an example of the structure of my scripts, in fact I have multiples procedures inside OuterProc cursor and multiple operations inside InnerProc cursor): create proc InnerProc as begin declare @Id int begin tran declare mycursor cursor local static read_only forward_only for select Id from MyOtherTable open mycursor fetch

问题 While executing an ssis package,I am getting the below error: "The transaction operation cannot be performed because there are pending requests working on this transaction." The ssis package has 4 execute sql tasks that run parallel. The connection is ADO.Net. The execute sql tasks calls a procedure which has transaction,rollback and commit, On execution 1 or 2 execute sql tasks fail and remaining succeeds. Also, On failure of any of the sql tasks, data of other execute sql tasks also

问题 I have been reading the docs and from my understanding I could see a scenario whereby a rollback could still occur: Write goes to primary which confirms that the journal has been written to disk Majority of the secondaries confirm the write but do not write to disk Power fails on entire cluster Primary for some reason does not start back up when power is restored A secondary takes the primary role The original primary finally starts, rejoins the set as a secondary and rolls back Is this

问题 I'm using NSManagedObjectContextObjectsDidChangeNotification and I have a problem where after inserting an object and then calling rollback so it is deleted, the change notification with the deleted object is called twice. This unexpected notification causes complications down the line that I have traced to this issue. I've edited Apple's Earthquakes example to demonstrate this problem. Edits are: - (void)viewDidLoad { [super viewDidLoad]; [self reloadTableView:self]; [[NSNotificationCenter

问题 I have implemented a Service as a stateless session EJB (3.2) to store data via JPA. In addition the EJB also updates a Lucene Index each time data is updated. The session bean is container managed. The code of the ejb looks like this: @Stateless @LocalBean public class DataService { .... public Data save(Data myData) { // JPA work.... ... // update Lucene index .... } .... } I have different other BusinessService-EJBs calling this DataService EJB to insert or update data. I have no control

问题 I just ran a command update sometable set col = '1'; by mistake without specifying the where condition. Is it possible to recover the previous version of the table? 回答1: Unless you... Started a transaction before running the query, and... Didn't already commit the transaction ...then no, you're out of luck, barring any backups of previous versions of the database you might have made yourself. (If you don't use transactions when manually entering queries, you might want to in the future to

问题 I'm trying to figure out a way to detect an occurrence of rollback in a MySQL stored procedure so I could handle the situation accordingly from a PHP script, but so far I can not find any solution. My stored procedure looks like this: delimiter | create procedure multi_inserts( IN var1 int(11), . . . IN string1 text ) BEGIN declare exit handler for sqlexception rollback; declare exit handler for sqlwarning rollback; START TRANSACTION; insert into table1(a,b,c,d) values(var1,var2,var3,var4);

问题 There is only a role per user in the application at the same time. To update a role, we previously remove all the current roles: Integer roleId = params.roleSelector.toInteger() def roleInstance = Role.findById(roleId) UserRol.removeAll userInstance UserRol.create userInstance, roleInstance It is working, but I think it is more correct to perform removeAll and create as an unitary operation in order to a correct roll back if any error happens. Is it possible? UPDATE 1 . I found here that we

问题 I did my project in cakePHP 3.0. By updating the composer my project converted into cakePHP 3.2. I want to rollback from 3.2 to 3.0. I tried rollback options too,that is also not working. How to rollback 3.2 to 3.0 ? 回答1: The rollback command supporty by composer is for the composer itself, ie it rolls back your composer installation to an earlier version, not anything that might have been installed via composer. To change the version of the cakephp/cakephp dependency, simply require the new

问题 I'm just learning Firebase and noticed that any operation simply replaces the data, which is a bit different than what I've seen on couchDB. In my understanding of their documentation, for purposes of making a rollback/undo of an .update() operation possible, I would use the .push() method. The idea would be to keep 2 versions of the data, so that I can query for the previous object. TO boot, there would need to be a FILO kind of approach so I'm not storing more than 2 items. DATABASE BEFORE