transactions

问题 I got error 4003 from paypal PDT when I was trying to retrieve payment information using the transaction ID. Although I there's a similar thread here : Paypal PDT error 4003 and I believe the answer is because of my transaction ID has expired. However, I couldn't find any info of how long will the transaction ID expired. p/s: My system is able to retrieve PDT info perfectly right after user return from paypal. 来源： https://stackoverflow.com/questions/23862124/paypal-pdt-transaction-id

问题 Suppose that I execute the following SQL statements: start transaction; insert into someTable (userId, amount) values (33, 44); Notice that there is no Commit or Rollback at the end of this statement. I also do not have the option of requiring autoCommit being enabled. How can a dba detect this sort of unfinished transaction? I've tried using 'show innodb status' but it provides too much information. I'm trying to find uncommitted transactions and force them to commit or rollback. Thanks. 回答1

问题 I'm having a problem involving a database transaction in one class that is timing out due to a secondary database connection being opened within the transaction; the problem started occurring when I added a foreign key constraint. And, testing using: SET foreign_key_checks = 0; I've been able to confirm this. My database class looks like this (I've left off all of the methods): class Db { function __construct($config) { $this->config = $config; } private function connect($config) {$dsn =

问题 Assume I have a message relation where I save messages that was created with this command: CREATE TABLE message ( id serial primary key, foo1 integer, foo2 integer, foo3 text ) And we have a function that gets a message and deletes it from the relation, like this: CREATE FUNCTION get_and_delete_message(p_foo1 integer) RETURNS TABLE(r_id integer, r_foo1 integer, r_foo2 integer, r_foo3 text) AS $$ DECLARE message_id integer; BEGIN SELECT id INTO message_id FROM message WHERE foo1 = p_foo1 LIMIT

问题 My Spring/Java web application has @Transactional services that can touch the database: @Transactional public class AbstractDBService { ... } Desired functionality is for any uncaught throwable that propagates up beyond the service layer to cause a rollback. Was a bit surprised this isn't the default behaviour but after a bit of googling tried: @Transactional(rollbackFor = Exception.class) This seems to work except when an exception is deliberately swallowed and not rethrown. (The particular

问题 Does the inserts are finished with the transaction commit? Or they can be finished later? 回答1: Per the MySQL Documentation: INSERT DELAYED works only with MyISAM, MEMORY, ARCHIVE, and (as of MySQL 5.1.19) BLACKHOLE tables. For engines that do not support DELAYED, an error occurs. None of these engines support transactions, so there's no conflict in functionality here. I would imagine that you will find that support of delayed inserts and transactions will be mutually exclusive. 回答2: Insert

问题 I am using Hibernate 3.6.0 with JPA 2 on Jboss AS 6.0.0 final. In an EJB of mine, there's a method which updated entity values and do some query on it. The whole method is running in a BMT transaction. If anything fails, all changes should be rollback and not committed to DB. The Database is mySql. Before running JPA query, JPA will auto flush the changed states to DB to prevent any stale data from returning. However, within my method, the auto-flush directly update and commits the changes to

问题 In SQL Server, is there something similar to finally clause in try..catch... block of c# ? I mean, I am using BEGIN TRAN, END TRAN, COMMIT TRAN, ROLLBACK TRAN etc in a SQL Server transaction and want a section or some set of actions that needs to fire irrespective of success or failure or transaction. Is there a solution for that? (similar to finally block on try/catch of OOPS languages). Thanks in advance 回答1: There isn't anything that will run "irrespective of success or failure" with 100%

问题 i have some simple SELECT statements and an INSERT wrapped in a using(TransactionScope...) block. UPDATE: isolation level is ReadCommited i got the following exception on calling scope.Complete() .(see below) At the same time the database was under high load caused by another application entirely. After the fact i found that the INSERT statement did in fact execute. My question is: How do i handle this exception in a way that leaves my database in a consistent state ? i`m looking for a

问题 I have a website with Dutch text which I want to translate to English. Is there a fast way of doing this with keeping the HTML tags( <strong>,<span> ) in tact. I know I can just copy the parsed TEXT into a translator but this will remove the formatting. I also know that at the end I have to go trough the text manually to fix some minor spelling and grammar. 回答1: Online translators are good to turn foreign text into something that can be understood, but they are useless for producing quality