roll back one commit

With the large number of high-concurrency access, massive data processing and other scenarios more and more, how to achieve the high availability of web sites, scalability, scalability, security and other goals are becoming more and more important.

With the large number of high-concurrency access, massive data processing and other scenarios more and more, how to achieve the high availability of web sites, scalability, scalability, security and other goals are becoming more and more

Case study (1) Let's say I modified a piece of data: Update people set name= ' Fusnow ' where name= ' old Fusnow '; The things I need to do include: Generate redo information in redo log buffer (including Redo,undo redo of the table, index or

Transaction and two phase commit, three-phase commit protocol (finite state automata) • Acid for 1 transactionsA transaction is the fundamental to ensure that a database is permanently changed from one consistent state to another, where acid is the

Are you familiar with transactions or PDO? Always roll back and the data database type cannot be deleted: sqlite & nbsp; no error is Prompted. one row is tested and there is no error. why always roll back? I always roll back. I cannot delete the

How to Use git to roll back some modifications ()   Many times, git novice easy to misoperation, for example, in the levelIISZ-1.4.dev branch, run the GIT pull IDC cpp-1.0 results, so do a lot of trouble, often lead to incorrect Maven project format,

Distributed transactions, like local transactions, contain atomicity (atomicity), consistency (consistency), isolation (isolation), and persistence (durability). Two-stage commit is an important method to ensure atomicity in distributed transaction.

Question: How to Use Transact-SQL to roll back a transaction in the transaction log file (for example, Id 0000: 0010a183 )? Answer:: To prevent data errors, SQL server does not support rollback of individual transactions. For example, assume that

Start transaction, commit, and rollback syntaxStart transaction | begin [work] commit [work] [and [no] chain] [[no] release] rollback [work] [and [no] chain] [[no] release] set autocommit = {0 | 1} start transaction or begin statement can start a

Some of the understanding of Oracle instance recovery, has been a misunderstanding, today by looking at relevant information and discussion with students, found their own mistakes, the results are as follows:Instance recovery: When the database is