mysql show transaction isolation level

Today, when I was studying JDBC, I saw a problem about the isolation level of MySql transactions. I felt that the content was quite advanced. So I recorded an article for later use. There are four database isolation levels, as described in the high-performance mysql book:

There are four database isolation levels, as described in the high-performance mysql book: Then let's talk about how to modify the transaction isolation level: 1. Modify the global settings, modify the mysql. ini configuration

A transaction did not commit to the B transaction is equal to not do get the previous dataBut the query in a transaction is the data after the operation.Data that is not submitted is only visible to itself and is not being update to the database.View the isolation level at t

[Mysql] about the transaction isolation level, mysql isolation levelI. Lock types There are many types of locks in MySQL, including common table locks and row locks, and new Metadata lo

Label:Turn from: http://www.cnblogs.com/zemliu/archive/2012/06/17/2552301.html There are four levels of database isolation, as described in the "high Performance MySQL" book:Then talk about how to modify the transaction isolation level:1. Global modification, modify the Mysq

There are four database isolation levels, as described in the "high-performance MySQL" Book:Then talk about how to modify the transaction isolation level:1. Global modification, modify the Mysql.ini configuration file, at last add1 #可选参数有: read-uncommitted, read-committed, R

Mysql transaction isolation level, mysql transaction isolationTransaction Isolation Levels InnoDB supports four isolation levels in the SQL1

There are four levels of database isolation, as described in the book High performance MySQL: Then tell me how to modify the transaction isolation level: 1. Global modification, modify Mysql.ini configuration file, at the end Plus Copy Code code as follows:

Mysql transaction isolation level, mysql transaction isolation Concept The isolation level is

Label:There are four database isolation levels, as described in the "high-performance MySQL" Book:Then talk about how to modify the transaction isolation level:1. Global modification, modify the Mysql.ini configuration file, at last add1 #可选参数有: read-uncommitted, read-commit

level is repeatable, but cannot solve the phantom read, but only at the serializable level. So I added a transaction C to show the effect. When you add a teacher_id=1 data in transaction C, the COMMIT,RR level should have a phant

MySQL transaction learning -- amp; gt; isolation level bitsCN.com MySQL transaction learning --> isolation level 6.

released.T1 the table-level shared lock is added when reading a table, T2 can also read a table, but cannot modify any data until the T1 transaction ends. The T2 can then increase the table-level exclusive lock on table A, at which point T1 cannot read any of the data in table A, and cannot be modified.As mentioned above, the serializable solution reads such as

MySQL transaction isolation level explanation (to) bitsCN.com original: http://xm-king.iteye.com/blog/770721 The SQL standard defines four isolation levels for transactions, including specific rules to limit which changes inside and outside the

MySQL database transaction isolation level introduction (TransactionIsolationLevel) there are four database isolation levels, which are described in the High Performance mysql book: Then let's talk about how to modify the

the end of the transaction is released.T1 the table-level shared lock is added when reading a table, T2 can also read a table, but cannot modify any data until the T1 transaction ends. The T2 can then increase the table-level exclusive lock on table A, at which point T1 cannot read any of the data in table A, and cann

The problems caused by transaction concurrency are the problems that need to be solved by the database. The transaction processing technology is very mature, and the four isolation levels plus a snapshot is a common solution for all databases, various data libraries are slightly different in details. MySQL supports mul