undo

What is the best way to undo a committed reverse merge? Here's the scenario: I committed a change, say revision 100, which caused a regression. Since I was leaving for a few days and didn't have time to debug the issue, I reverse-merged 100 and committed revision 101. Now I'm ready to attack the issue again. I have three ideas for doing this, but I don't know what is best or even what will work: Reverse merge revision 101 Merge revision 100 Copy the changes made in 100 to my working copy without mergeinfo Any suggestions? Reverse merging revision 101 describes best what you're doing, ie

I am using Visual Studio 2015. Version of TFS is 2012 (Version 11.0.51106.1). Is there a way to undo unshelve, other's user shelveset, to have situation as before unshelve command? No, there is no this command. Unshelving is how you restore the shelveset to your machine so you can keep working on it. It doesn't change the shelveset or anything else on the server . It's just a get operation. Seems you just want to bring the code back to how it was before you loaded up someone's shelveset onto the workspace. If you hadn't made changes in pending changes before loading the shelveset, Undo Pending

重做undo表空间 场景： alert日志，报了如下错误: [oraprod@arpinfo bdump]$ tail -f alert_PROD.log Errors in file /ora1159/prod/proddb/9.2.0/admin/PROD_arpinfo/udump/prod_ora_8729.trc: ORA-00603: ORACLE server session terminated by fatal error ORA-00600: internal error code, arguments: [4097], [], [], [], [], [], [], [] Fri Sep 6 10:08:56 2019 Errors in file /ora1159/prod/proddb/9.2.0/admin/PROD_arpinfo/udump/prod_ora_8785.trc: ORA-00600: internal error code, arguments: [4097], [], [], [], [], [], [], [] Fri Sep 6 10:08:59 2019 Errors in file /ora1159/prod/proddb/9.2.0/admin/PROD_arpinfo/udump/prod_ora_8785.trc:

事务是MySQL等关系型数据库区别于NoSQL的重要方面，是保证数据一致性的重要手段。 本文将首先介绍 MySQL 事务相关的基础概念，然后介绍事务的ACID 特性，并分析其实现原理。 MySQL博大精深，文章疏漏之处在所难免，欢迎批评指正。 一、基础概念 事务（Transaction）是访问和更新数据库的程序执行单元；事务中可能包含一个或多个sql语句，这些语句要么都执行，要么都不执行。作为一个关系型数据库，MySQL支持事务，本文介绍基于MySQL5.6。 首先回顾一下MySQL事务的基础知识。 （1）. 逻辑架构和存储引擎 图片来源：https://blog.csdn.net/fuzhongmin05/article/details/70904190 如上图所示，MySQL服务器逻辑架构从上往下可以分为三层： （1）第一层：处理客户端连接、授权认证等。 （2）第二层：服务器层，负责查询语句的解析、优化、缓存以及内置函数的实现、存储过程等。 （3）第三层：存储引擎，负责MySQL中数据的存储和提取。 MySQL 中服务器层不管理事务，事务是由存储引擎实现的。 MySQL支持事务的存储引擎有InnoDB、NDB Cluster等，其中InnoDB的使用最为广泛；其他存储引擎不支持事务，如MyIsam、Memory等。 如无特殊说明，后文中描述的内容都是基于InnoDB。 （2）.

I am wondering if there is a way to save ability to undo actions after macro has been run. I do not care about results of macro - just need to undo actions that were done by user before macro. Background: I have a macro on the worksheet_change event that logs who and when made the change on this worksheet. I do not want it to restrict user's ability to undo his/her actions. There is no easy way to do this, but it's possible. The approach to this is to create three macros, and use some global variables to save state: MyMacro MyStateSavingMacro MyStateRevertingMacro E.g. My macro changes Cells

数据文件管理 存储结构与数据文件 1、存储结构： database----tablespace----segment-----extent-----blocks | datafile tablespace:存储表数据索引数据的空间： >>>select tablespace_name ，contents from dba_tablespaces; //查看表空间,及分类 SQL> select tablespace_name,contents from dba_tablespaces; TABLESPACE_NAME CONTENTS ------------------------------ --------- SYSTEM PERMANENT SYSAUX PERMANENT UNDOTBS1 UNDO TEMP TEMPORARY USERS PERMANENT EXAMPLE PERMANENT 2.表空间分类： 永久表空间： system/永久表空间/系统表空间/字典表空间 :主要存放当前数据库数据字典信息（对象的结构信息），ORACLE内部的基表，dbca建库默认存放到system表空间， desc tab$ //oracle内部的基表 desc user$ //oracle内部的用户 desc ts$ //oracle内部的表空间 sysaux:永久表空间

Editing a RichTextBox control's text (more specifically, modifying selection font/color) programmatically seems to be tracked in the control's built in undo stack. Is there a way, short of writing my own undo/redo "manager", to prevent certain actions/operations from being added to the undo stack ? No cando. At best you can flush the undo stack completely by sending EM_SETUNDOLIMIT twice. EM_SETTEXTEX offers the same option with the ST_DEFAULT flag. Surely not what you want. Look at ScintillaNET for a real editor. If you came here when searching for a WPF c# answer you have a good one here

I find Vim's undo to be a bit too coarse. E.g. if I type something like this: a // to go into edit mode to be or not to ve <esc> // to exit insert mode Oops! I made a typo. I want to start undoing so I press u , but then it clears the whole line. Is there a way to undo word-by-word or character-by-character? So as you see from the others what you are asking for doesn't exist in Vi (AFAIK). Undo undoes what your last action was. If your last action was to enter insert mode and then add a line and then exit insert mode. That will be undone, however if from the default mode you hit the "x" key