rollback

asp.net| Transaction Processing Three kinds of transaction processingTransaction processing is often encountered in the processing of problems, often used methods have the following 3 kinds of summary collation as follows:Method 1: Write directly to

Fetching across Commits:where is the Source of the Problem? by Boris Milrud Fetching across commits is a common and accepted practice in the Oracle programming world. However, it is isn't an ansi-supported operation. According to the ANSI standard,

The most important thing for Windows 2003 system administrators is the security of the Windows 2003 system. In order to improve the security of the system, we may have a wide range of security settings for the system, but whether these security

Oracle's 11GR2 version does not make much of a change to the data pump, mainly by adding support for the original version parameters and removing some small restrictions. This article introduces the data pump to import the new data_options

Background processes are used to perform the actual maintenance tasks required to keep the database running. For example, a background process maintains the buffer cache and writes the block out to the data file as needed. Another process is

oracle| Create Available for: Table spaces, rollback segments, tables, indexes, partitions, snapshots, snapshot logs Parameter name default value minimum Maximum description INITIAL5 (block) 2 (data block) operating system limits the size of the

1. Set the SQL statement for the five rollback segments as follows: 　　 SELECT segment_name from Dba_rollback_segs WHERE initial_extent Uppper (OWNER) = ' public ';SELECT UPPER (STATUS) from Dba_rollback_segs WHERE UPPER (segment_name) = ' 　　 ALTER

Transaction processing in the development of Web applications, there is no exception to the need to access the database to complete the query, insert, UPDATE, delete and other operations. Influenced by the application logic, it is sometimes

ado| Data Transaction Analysis A transaction consists of a minimum of two steps – start, then commit or rollback. The start call defines the bounds of the transaction, while the call commits or rolls back at the end of the definition. Within the

server| Speed | optimization MS SQL Server Query optimization method (1) There are many reasons for the slow query speed, common as follows: 1, no index or no index (this is the most common problem of query slow, is the defect of program design)2, I/

server| Solution Database operation deadlock is unavoidable, this article does not intend to discuss how deadlocks are generated, the focus is to resolve deadlocks, through SQL Server 2005, now seems to have a new solution. The following SQL

The two concepts that are easily confusing for first-contact Oracle databases are Oracle instances and Oracle databases. These two concepts are different from instances and databases under SQL Sever, and of course there are similarities. Just in SQL

In Oracle databases, it is often difficult for management tablespaces to visualize data from SQL queries. One way to achieve tablespaces visualization and easier management is to create a segmented use mapping (block usage maps) similar to the

oracle| Admin | data | database Responsibilities of Oracle Database administrators Oracle database administrators should regularly monitor Oracle database systems as follows: (1). Daily operation Status of Oracle database, log files, backup status,

Recent project software upgrades to support transactions, make an example for everyone to learn the referenceEnvironment MySQL 5.2/php 5The table type that supports transactions requires InnoDB$linkid =mysql_connect (' localhost:3307 ', ' root ', ***

Oracle 71. Application of kernel parameters Shmmax Implication: This setting does not determine how much of the memory the Oracle data library or operating system uses, but only the maximum number of memory that can be used. This setting also does

Global declarative Temporary tables Temporary tables are often used to store temporary data and intermediate results. Because they do not require logging and are not present in the system catalog, they can improve performance. In addition, because

Oracle Trace Files Oracle trace files are grouped into three types, one is the background alarm log file, which records the activity of the background process during startup, shutdown, and running of the database, such as table space creation,

Suppose a user (assuming a) issues the following statement to update a record: Sql> Update Employees set last_name= ' Hansijie ' where employee_id=100; Example above, at which point a user has issued an SQL statement that updates the record for

oracle| Control | data | detailed Insert Data    INSERT statements are often used to insert rows into a table, there can be special data fields in rows, or you can use subqueries to create new rows from existing data. The    column directory is