commit

Dynamic execute immediate replaces the previous Oracle8i Dbms_sql package package. It parses and immediately executes a dynamic SQL statement or a pl/sql block that is not created at run time. Dynamic creation and execution of SQL statements

I've often seen people ask this question, I've set up multiple indexes on the same table, why does Oracle choose one at a time and not use multiple indexes at the same time? Generally speaking, the common access to the same table more than two

Flashback query: Queries the record information that has been saved in the past at a point in time, between the current time and a specified time point in the past. Sql> Conn Scott/oracle Connected. Sql> select

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

The hibernate application is deployed to WebSphere Application Server 5.1, using the connection pool of was, after the program has handled the more Session.save (object) operations, executing the submit thing The following exception occurred while

oracle| Data | database Original Author: Sameer Wadhwa Pause (quiescing) A database is a powerful new feature that allows DBAs to complete some of the operations that a database is in restricted mode (restricted modes). With this feature, the DBA

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

1. Full recovery Restores the database to the last commit state before failure through backup, archive log, current redo. (typically used for media failure) --Archive mode 1) Full recovery 2) Incomplete recovery --Non-archive mode 1) revert to

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 why the transaction log and the transaction logging service are intended? Without

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 INSERT DECLARE v_empno Emp.empno%type: = &empno;  V_ename emp.ename%type: = ' &ename ';  V_salary Emp.sal%type: = &sal;  BEGIN INSERT into EMP (empno,ename,sal)

Notes bought 2.5 pounds of coffee beans today, Starbuck's. A little bit expensive, with 599 of the ocean, oh, occasionally luxury can not be too. Just grinding a cup of coffee, lit cigarette, hehe, continue to start J2ME learning process. Although

Case 2: --Some data files are missing, recover data files (mount or open) 1) test environment 07:30:40 sql> CREATE TABLE test (ID int) tablespace test; Table created. 07:30:52 sql> Conn/as SYSDBA Connected. 07:30:57 sql> 07:30:57 sql> INSERT

Kevin (Tower Designer): In the Internet industry must have heard more or less of the name of GitHub, in addition to the largest open source project hosting platform, many enterprises are also using GitHub to work together, of course, we are one of

Pre-acquisition is a mode of obtaining data from the server; The other side of the Ajax solution is sending data to the server. Because you want to avoid page refreshes, this is more important for sending user data. In a traditional Web site or Web

Summary CVS is cool, but subversion is cooler. However, if you are using Eclipse for development, you may not be able to take advantage of subversion until recently. With the release of Subclipse, subversion may eventually overwhelm CVS by giving

A lot of online articles are talking about changing server.xml, including one of my "Eclipse from getting started to mastering." However, after today's nightmare-like experience, eventually did not change Server.xml, the datasource configuration

SQL in the actual multi-user concurrent access to the production environment, we often have to keep the data consistent as much as possible. And the most typical example is that we read the data from the table, check the validation, modify the data,

Development and deployment of OPENJPA applications in Java EE environment In part 1th of this series: OpenJPA and EJB 3.0 introduced OpenJPA, it was mentioned that "OpenJPA can function as a stand-alone persistence layer framework, or it can be

The HBase Client API provides a way to write a buffer, that is, to bulk submit a batch of put objects to the HBase server. This article will combine hbase related source code, carry on the thorough introduction to it, analyze how to set up and use

To connect to a SQL Server database using the Ado.net custom class MyDBase Using System; Using System.Data; Using System.Data.SqlClient; public class MyDBase { BOOL Ecode=false; String ES; SqlConnection cn=new