------------------------------------------------------------------------------- -- -- Script: rolling_back.sql -- Purpose: to predict when transactions will finish rolling back -- For: 9.0+ -- -- Copyright: (c) Ixora Pty Ltd -- Author: Steve Adams --…
仔细研究了下,发现sql server里面的explicit transaction(显示事务)还是有点复杂的.以下是有些总结: Commit transaction 会提交所有嵌套的transaction修改.但是如果嵌套的transaction里面有rollback tran to save point, 那么save point之后的部分会revert掉. delete from dbo.numbertable begin tran out1 ) ) begin tran inn1 ) )…
今天查看Job的History,发现Job 运行失败,错误信息是:“The transaction log for database 'xxxx' is full due to 'ACTIVE_TRANSACTION'.” 错误消息表明:数据库的事务日志文件空间耗尽,log 文件不能再存储新的transaction log. SQL Server将事务日志文件在逻辑上划分为多个VLF(Virtual Log Files),将这些VLF组成一个的环形结构,以VLF为重用单元.如果一个VLF 中存在…
Fescar is an easy-to-use, high-performance, java based, open source distributed transaction solution. What is Fescar? A distributed transaction solution with high performance and ease of use for microservices architecture. Distributed Transaction Pro…
最近遇到一个误更新数据的问题,使用ApexSQL Log做挖掘事务日志的时候,发现ApexSQL Log生成的Redo Script跟原始SQL是有区别的.它们并不是完全一致的.只是逻辑上等价而已.如下所示,我们做一个测试,如下所示,创建一个表后,并模拟忘记添加条件,出现误删除数据的情况 SELECT * INTO KERRY_TEST FROM SYS.OBJECTS; DELETE FROM KERRY_TEST 然后我们用ApexSQL Log挖掘事务日志,你会看到有很多对应的De…
本文转自:http://yedward.net/?id=24 set transaction语句允许开始一个只读或者只写的事务,建立隔离级别或者是为当前的事务分配一个特定的回滚段.需要注意的是,set transaction必须是事务处理中的第一条语句,注意是事务处理的第一条语句,不是指代码的第一条语句,并且set transaction在一个事务中只能出现一次. set transaction的语法如下: SET TRANSACTION parameter; parameter是用来指定参数的…
本文转自:http://geekswithblogs.net/bbiales/archive/2012/03/15/how-to-nest-transactions-nicely---quotbegin-transactionquot-vs-quotsave.aspx Do you write stored procedures that might be used by others? And those others may or may not have already started…
原文地址:https://blog.csdn.net/f641385712/article/details/80445912 1.概述 想必大家一想到事务,就想到ACID,或者也会想到CAP.但笔者今天不讨论这个,哈哈~本文将从应用层面稍带一点源码,来解释一下我们平时使用事务遇到的一个问题但让很多人又很棘手的问题:Transaction rolled back because it has been marked as rollback-only,中文翻译为:事务已回滚,因为它被标记成了只回滚.…
1. Introduction 1.1. About 1.2. Sphinx features 1.3. Where to get Sphinx 1.4. License 1.5. Credits 1.6. History 2. Installation 2.1. Supported systems 2.2. Compiling Sphinx from source 2.2.1. Required tools 2.2.2. Compiling on Linux 2.2.3. Known comp…
https://www.percona.com/blog/2013/02/01/implications-of-metadata-locking-changes-in-mysql-5-5/ implications of Metadata Locking Changes in MySQL 5.5 Ovais Tariq | February 1, 2013 | Posted In: Insight for DBAs, Insight for Developers, MySQL While m…
转自:https://www.jeejava.com/spring-data-jpa-batch-insertion/ Spring Data JPA Batch Insertion will show you how we can insert a large dataset into a database at once using Spring Data JPA. For this tutorial we will create a Spring Boot project in Eclip…
nodejs也算是一篇脚本了我们来看nodejs如何使用mysql数据库了有了它们两组合感觉还是非常的不错哦,下面一起来看nodejs中使用mysql数据库的示例,希望能够帮助到各位. <script>ec(2);</script> db-mysql因为 node-waf: not found 已经不能使用,可以使用mysql代替. 本文主要是[node-mysql]: https://www.npmjs.com/package/node-mysql 的翻译,也去除了一部分自己暂时…
Build 4.0.0.Alpha1 ============================= ** Known BREAKING CHANGES from NH3.3.3.GA to 4.0.0 NHibernate now targets .Net 4.0. Many uses of set types from Iesi.Collections have now been changed to use corresponding types from the BC…
