commit or rollback

. What are the application scenarios, AOP principles, and benefits of AOP in spring?A: Aop--aspect oriented programming is programming for facets and is used to encapsulate crosscutting concerns in the following scenarios:Authentication permissions,

In the previous blog, the general introduction of transactions, in fact, in the enterprise Application server transactions are at different levels exist. A relatively simple transaction is the bottom-level transaction, which is the transaction

Introduction to Autonomous TRANSACTION (Autonomous affairs)In the process of doing some projects based on the lower version of Oracle, sometimes there are some headaches, such as the need to record some information to the trace table for each step

In this Document Goal Solution Overview Steps in writing Java Concurrent program Template

Autocommit is a change in transaction submission method parameters, set to 1 o'clock, all changes to the immediate effect of the change, that is, 1 o'clock, after the execution of the statement, the transaction automatically submitted. If set to 0 o'

We already know that log buffers are used to store log information about the changes in transactions to the data block. So what is the content of the log information here, and what is the structure of it? The smallest unit of Oracle record database

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 | The 1}start transaction or BEGIN statement can begin a

Dba_2pc_pending Oracle handles distributed transactions automatically, ensuring the consistency of distributed transactions, and all sites are committed or rolled back. Typically, the process is completed in a very short time and is simply not

Sqlserver2000 transaction processing in server|sqlserver| transaction processing   I.        Definition and its nature: transaction: A series of actions performed as a single logical unit of work. Attribute: A logical unit of work must have four

ado| Data transactions in Ado.net Ado.net supports two transaction models, which are in the. NET Framework documentation is defined as a guide. The Transaction Guide manual describes the database transactions that should normally be known, and it

1. Concepts related to distributed transactions Distributed transaction processing (distributed Transaction PROCESSING,DTP) refers to the possibility that a transaction may involve multiple database operations, and the key to distributed transaction

Server Why should I introduce a lock? Concurrent operations on a database by multiple users can cause the following data inconsistencies: Missing updatesA,b two users read the same data and make changes, one of the user's changes to destroy the

30, which is true when a database instance are shut down?A. Only transactional and normal modes wait for all uncommitted transactions to commit or rollback and then close the data Base.B. Immediate, transactional, and normal modes all result in a

I. Overview of SqlsessionIn MyBatis, you can use Sqlsessionfactory to create sqlsession. Once you have a session, you can use it to execute the mapping statement, commit or rollback the connection, and finally, when you no longer need it, you can

Java.sql.SQLException:Can't call commit when Autocommit=true at Com.mysql.jdbc.SQLError.createSQLException (Sqlerror.java:934) at Com.mysql.jdbc.SQLError.createSQLException (Sqlerror.java:931) at Com.mysql.jdbc.ConnectionImpl.commit

Development boss request through Binlog query a modified data, data was detected after asked me, there is no possibility Binlog will not record, answer no, because the data is modified, if the failure of the direct rollback, will not be recorded in

1. Asynchronous I/O modeTypically, when SQLite writes a database file, it waits until the write operation is complete and then controls the return to the calling program. Writing a file system is very time-consuming compared to CPU operation, which

1 PrefaceThe database large concurrency operation takes into account the deadlock and lock performance issues. See online most vague (especially update lock), so here is a concise explanation, for the following description of the convenient, here

1 PrefaceThe database large concurrency operation takes into account the deadlock and lock performance issues. See online most vague (especially update lock), so here is a concise explanation, for the following description of the convenient, here

The most important and distinctive feature of MySQL is his storage engine architecture, which is designed to separate query processing (precessing) and its system tasks (Server Task) from the storage/extraction of data.1.1 MySQL Logic