Oracle Database 11g performance optimization strategy-optimizing Table PerformanceIntroduction 1-1 Create a database with optimal performance problem description www.2cto.com you realize that when you first create a database, there are some
The TOP clause of the 1.TOP clause is used to specify the number of records to be returned. The TOP clause is very useful for large tables with thousands of records. Select top number | percent column_name (s) FROM table_name For example: select top
We all know that in the actual development environment and test environment of Oracle databases, the actual log mode of Oracle databases and the automatic Oracle archive mode are generally not set, the main purpose is to facilitate the adjustment of
In linux, use mysqldump to back up A mysql database into an SQL file. Phase 1: create A full backup mysqldump-hip address-uusername-ppassword-~ Name. SQL exports the entire database (structure and data) to the slave database in this case.
In linux,
In addition to the built-in DBCA for creating databases, the Oracle database also has another related creation solution, that is, manual Oracle database creation. This technology is also required by DBA personnel. The following describes how to
Common MySQL database operationsServer operation (cmd)
Enable the server (ensure that mysql is a windows Service): net start mysql56 (the name is the same as that in the system process)
Check whether the mysqld.exe process exists in the
There are multiple ways to create a database. For example, you can use the Enterprise Manager to create a database, or you can use the Wizard to create a database. The operations in the above two methods are very simple, but there is a major
Procedures and functions
Both the process and function are stored in the database in the form of compilation. The function can have either no parameter or multiple parameters and return a value. The process has zero or multiple parameters and no
To manually create a database, follow these steps:
Step 1: Determine the SID of the database instanceThe SID of the database instance is used to distinguish the current instance from the instance that may be created later. % setenv oracle_sid
I have previously reproduced an article on backup and recovery of controlfile. The address is as follows:
Http://blog.csdn.net/wh62592855/archive/2009/11/20/4844506.aspx
Control File Content
Today, I suddenly wondered what information is contained
Oracle Management and Maintenance. Install, create, start, and close the database Frequently Asked Questions (1)
20070605
Papayas
I. Content Overview
This article describes how to solve common problems during Oracle Installation and database startup
When operating mysql in php, I first spit out mysqli and mysql. The former is the ultimate version of the latter. my ps does not support mysql-related functions, and I am reading the tutorials on w3school, the code on w3school uses the old version
Microsoft's SQLServer is one of the commonly used database management systems in small networks. Network database applications are also increasing. The normal operation of such network database application systems is generally dependent on existing
From: http://www.2cto.com/database/201206/134514.html
0. Create a database tableMysql> create database if not exists my_db default charset utf8 COLLATE utf8_general_ci;# Pay attention to the following sentence "COLLATE utf8_general_ci", which
In the development and testing environments of Oracle databases, the log mode and automatic archiving mode of databases are generally not set, which is conducive to the adjustment of system applications, the generation of a large number of archive
For more information, see .
-------------- Note: The following operations are performed in rhel vnc, not in secureCRT. -------------------------- Cause: If it is executed in secureCRT, m Lu will be shown as: m Lu. See the following. Why? I
Using mysqldump in linux to back up a mysql database as an SQL FilePhase 1: Completely backup mysqldump-h IP address-uusername-ppassword-A> ~ /Name. SQL in this case, the entire database (structure and data) is exported and backed up into an SQL
Show databasesshow tablesinformation_schema
The output of the show tables statement does not contain the temporary table.
View all databases on the server > Show databases: view the create database statement of a given database> show create
DBAs must use database-independent authentication when performing various database operations.
Special system permissions: sysdba and sysoper:
Sysdba:* Use the startup or shutdown statements to start or close databases and instances.* Use the alter
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.