rollback

oracle| statement 1, view the table space name and size Select T.tablespace_name, round (SUM (bytes/(1024*1024)), 0 ts_size From Dba_tablespaces T, Dba_data_files D where t.tablespace_name = D.tablespace_name Group BY T.tablespace_name; 2, view the

public static function Exec_sql_tran ($arr _sql) { $result =true; $con = new mysqli (dbhost,db_user,db_passwd,db_name); $con->autocommit (FALSE); foreach ($arr _sql as $key => $sql) { if (! $con->query ($sql)) { echo $con->error. " /";

Oracle Logminer is an actual, useful analysis tool that Oracle has provided from the product 8i, which makes it easy to get the details of Oracle Redo log files (archived log files), especially The tool can analyze all the DML (INSERT, UPDATE,

Create | scripts | data | database all scripts for creating databases manually and their descriptions All scripts and instructions for creating a database manually System environment: 1, operating system: Windows Server, machine memory 128M 2.

1. What is IMU? What is the main role of IMU, that is, to solve the problem? IMU--->in Memory undo,10g new features, the database will open up separate memory areas in shared pool to store the Undo information. Each new transaction is assigned a

This article provides an open source JavaScript library that provides the ability to add bookmarks and fallback buttons to AJAX applications. After completing this tutorial, developers will be able to get a solution to the problems encountered in

After the system crashes, use the DB2 transaction log to recover the database. How many times have you encountered the error message "sql0946c The transaction log for the"? When trying to solve the problem, do you stop to think about the following

oracle| Script In a longer period of interaction with Oracle, each DBA, especially some heroes have a variety of scripting tools to complete a variety of purposes, so very convenient and quick to complete the day-to-day work, the following part of

This article mainly introduced in Python to write a database module tutorial, this article code based on python2.x version, the need for friends can refer to the In a web app, all data, including user information, published logs, comments, and so

Flashback is a feature that Oracle has been offering since 9i, using Oracle queries in 9i to implement data that has been manipulated for a specified period of time from the rollback segment, to perform data alignment, or to correct error data due

Problem At one time when multiple tables were updated at the same time, there were some problems. It is necessary to write and draw attention to it. Although multiple DW (3) correspond to a single table, there is a relationship between the tables,

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

I split the model into pieces, a,b,c,d,e,f, what do these pieces represent? First A, this base represents the base class of the entire frame, and all model files must inherit from the base class; Since B's content depends on D, let's say first D,

oracle| problems to start Oracle common problem Analysis (2003-10-1) This article is from "Network Administrator World" 2003 phase 10th "Fault Diagnosis" column The startup and shutdown of instances and databases is one of the important

In practical applications, when we are ready to hand over a project to the customer for use, we need to clear all the tables in the library before the test data to give the customer a clean database, if the table involved a lot, to be emptied, not

On the itpub, I saw someone raise the question. In SQL Server or some other database, DDL statements can be rolled back, so why can't oracle rollback DDL statements? To illustrate this issue, first you need to explain what a DDL statement is. A DDL

Contains crud, transactions, tree recursive queries, paging, and more. Demonstrate the simplicity of glamour. All parameters are escape, there is no injection problem. /* * Anthony.chen * Reserved */ Class DB { Query types Const SELECT = 1;

server| triggers SQL SERVER 2005, a new addition to a number of new features, in which DDL triggers are a good choice, based on the information of the preliminary study as follows, now sorted: In SQL Server 2000, after triggers can only be defined

asp.net| data Many database operations need to be transacted, and there are roughly 3 levels of transactions under ASP.net: (1) Transaction at the level of the stored procedure (2) Ado.net-level transactions (3) asp.net transaction at the page level

Web|web Services | access | data | database Absrtact: This paper analyzes the current situation of database access middleware, points out the existing problems, and draws the necessity of applying new technology. A database access middleware WSDBM