rollback

Introduction to Database Transactions A database transaction is a logical unit of work that consists of a set of SQL statements. You can think of a transaction as an irreducible set of SQL statements that are permanently recorded in the database or

Hardware vendors usually update the device's drivers regularly, to modify bugs in older drivers, improve driver compatibility, and so on, in general, newer drivers often mean better performance and more reliable stability, which is what many friends

Whether the design of database model is reasonable can greatly affect the performance of the system. Based on the experience of designing and using database for many years, the author puts forward the following Accounting principles for the

oracle| Data | database | Original I use the Oracle database for working relationship, found that there are not many people here, but often found that someone mentioned in the PHP operation of the Oracle database problem is not answered, I have

Now the mainstream database management system, both support the implementation of multiple transactions at the same time, so as to improve the operation of the database management system efficiency. Just imagine that if only one transaction is

oracle| Data | database | Cursor SQL is the language used to access the Oracle database, Pl/sql expands and strengthens the functionality of SQL, while introducing stronger program logic. Pl/sql supports DML commands and SQL transaction control

After two weeks of performance optimization, Avalon finally achieve the goal of a page binding to tens of thousands of times when not Cotton's target (angular limit is 2000). Now take a break and summarize some of the Avalon problems. The first is

oracle| Admin | data | database The Oracle database system should be monitored regularly in the following manner: ? (1). Daily operation Status of Oracle database, log files, backup, database space usage, system resource Usage check, find and

When performing a rollback (rollback), if you receive the following message that 1 or more tables used in the transaction do not support transactions: Warning: Some of the changed non-transactional tables cannot be rolled back. These

public void UpdateContactTableByDataSet(DataSet ds,string strTblName) { try { SqlDataAdapter myAdapter = new SqlDataAdapter(); SqlConnection　 conn = new SqlConnection(strConnection); SqlCommand myCommand = new SqlCommand("select * from

Transaction Processing | data | Database Summary This paper introduces the method of transaction processing in Java, and explains how to implement the JDBC transaction, JTA (Java Transaction API) transaction supported by the JavaBean and EJB

Ado| notes have been reading "ADO" in the library for the last few days. NET Practical guide, found really a good book. Reading naturally have experience, I based on the book clues, their learning experience mainly in the form of code records down. (

Oracle| Skills | experience 1. Delete a table space DROP tablespace tablespacename [including CONTENTS [and Datafiles]] 2. Delete User DROP USER user_name CASCADE 3. Considerations for deleting a table When you delete all the data in a table,

12.2.1. Unmanaged environment If the Hibernat persistence layer is running in an unmanaged environment, the database connection is usually handled by the hibernate connection pooling mechanism. 代码内容 session/transaction处理方式如下所示： //Non-managed

Brain--Control file The role of the control file Control the contents of a file (1) as shown in Figure 11.1. (2) The General Information tab of the Edit control file appears as shown in Figure 11.2. (3) Figure 11.3 shows the record document Segment