Oracle

If you encounter a problem when installing Oracle 9i enterprise on Redhat Linux5, please read the following article to help you solve the problems related to the actual application of Oracle 9i enterprise. The installation steps are as

The Oracle High Availability Technology (PAA) is now based on proven Architecture related to its Maximum Availability Architecture (locally, locally) the design blueprint is based on proven Oracle High Availability technologies. The optimization

We all know that in the maintenance of the Oracle DB2 database, There is a related task that we often need to deal. If we need to create a large amount of information in the relevant database before putting it into practical production and use in

Guidance:This article focuses onOracle optimizer3 different types of descriptions, and under what circumstances can different types of optimizer be used, and under what circumstances should we avoid using which optimizer, the following describes the

Introduction: OracleDatabase 10 Gb introduces the latestData PumpData Dump technology allows DBAs or developers to quickly move database metadata (object definition) and Data to another oracle database. So traditional dataImport and ExportWhat is

Automatic Oracle Remote Data BackupNowadays, it has been widely used in many places. For example, in large commercial applications, Remote Disaster Recovery and backup of data are very important and necessary. Based on my practical experience, I

This article focuses on the following aspects:Oracle,MySQLAndPostgreSQLFor comparison, we will start to introduce them one by one. Hybrid SQL (Optimization engine) SQL is the basis and most critical measure for your interaction with your database,

InWindows 7LowerInstall Oracle database lite 10 GBThe following error occurs after setup.exe is run. The error message is as follows: Checking installer requirements...     Checking operating system version: must be 5.0, 5.1, 5.2 or 6.0.    

  I. Official Website description 1.1 processes 11gR2 documentation:   Property Description Parameter type Integer Default value 100 Modifiable No Range of values 6 to operating system dependent Basic Yes Oracle RAC Multiple instances can have

What is an exception?Errors in Oracle are usually divided into compile-time errors and run-time errors ), an exception is a warning or error that occurs during PL/SQL Execution. • How is an exception triggered? -When an Oracle error occurs-use the

ORACLE 11G automatic maintenance task:An automatic maintenance task is a database maintenance operation task automatically started according to rules. For example, the system automatically collects statistics used by the query optimizer. The

Oracle multi-Table query contact person (log person, log Content, log contact) Description: three tables are respectively www.2cto.com User table, aw_usercotrl log table, aw_userlog message table, and aw_userlog_lword User table. They are

One of Oracle learning notes: SQL internal link, external link, and self-LinkIt is not easy for the landlord to learn Oracle recently. After six months of failure, he has to start over again.SQL internal links, external links, and self-links. I have

Oracle SQL single quotes double roles in ORACLE, single quotes have two roles, one is that the string is referenced by single quotes, the other is escape, dynamic composition of SQL at the beginning of learning is often puzzled. The use of single

Detailed description of lsnrctl parameters and query status of the Oracle listener lsnrctl command common parameters: lsnrctlstart starts the specified listener stop to close the specified listener status to display the listener status. The status

Batch refresh remote materialized view (standby) 1. create a remote database connection create database link MDM connect to MDM identified by mdm using '(DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP) (Host = 172.17.11.1) (PORT = 1521)

Some people on the Internet have provided the best optimization ideas for the application of temporary tables in Oracle temporary tables: 1. first, extract the records that meet the conditions in the large table to generate a temporary table. 2.

Is not null and! in Oracle SQL! = NULL: is not null and! = NULL. We often encounter database conditions! = NULL, but the returned result is a NULL set. In fact, the difference is not fully understood. By default, it IS recommended to use is not null

Pl/SQL developer open the table garbled. In pl/SQL developer, view the table structure. The table structure comments are all ???, It is normal to view the table structure directly in the cmd window, which indicates that it is a problem with pl/SQL

Oracle Database Diagnostic File (log) view Diagnostic File (Diagnostic File) 1: Role of the Diagnostic File Diagnostic files: contains information about Major Events encountered in the background. It is used for parsing issues and is used for daily