alter database character set

Today a friend and I said that his database could not be Open,open process prompts ORA-00900 error, by analyzing alert log and props$ table, they found that they have modified an invalid Nls_characterset value, causing the database to not start

Analysis issues Troubleshooting login MySQL view with show VARIABLES like ' character% '; The default character set for Character_set_database and Character_set_server is latin1. +--------------------------+----------------------------+|

Problem:When IMP is a DMP file, the prompts do not support the required character set conversion (from type 850 to 852). principle: Oracle Multi-Language settings are designed to support the world wide range of languages and character sets, and

--View Oracle database Character set: Select Userenv (' language ') from dual; Query results: 　 Simplified Chinese_china.　　Al32utf8 --modifies the Oracle database character set: (In SQL Plus) sql> conn/as sysdba; sql> shutdown

1. Nls_lang parameter composition The Nls_lang parameter consists of the following parts:Nls_lang=_.Nls_lang the meanings of each part are as follows:LANGUAGE specifies:-oracle the language used for messages-Date month and day displayTerritory

--View Oracle database Character set: SQL code Select Userenv (' language ') from dual; Query results: Simplified Chinese_china. Al32utf8 --Modifying the Oracle Database Character set: (In SQL Plus) SQL code Sql> Conn/as sysdba; sql>

What is an Oracle character set An Oracle character set is a collection of symbols that are interpreted by a byte of data, having a size and a mutual containment relationship. Oracle's support for the national language architecture allows you to

oracle| Chinese Characters | Problems before doing a system, encountered a problem! Today, I accidentally found the solution to this problem and posted it!!! Problem Description: VARCHAR2 (4000) ABC; Intert into table_name (ABC) VALUES (' Here are 1

Oracle second part, Oracle Architecture system [Q] Oracle has those data types [A] common types of data are Char fixed length character value field, maximum length up to 2000 bytes NCHAR a fixed-length character value field of a multibyte character

One, what is the Oracle character set An Oracle character set is a collection of symbols that are interpreted as a byte of data, having a size and a mutual containment relationship. ORACLE's support for the national language architecture allows you

 Character Set base character set: A character set in a database contains two meanings A collection of various text and symbols, including national text, punctuation, graphic symbols, numbers, etc. The encoding of characters, that is,

In the data migration needs to make the source and target database of the character set, version and other information unified ...Here is the setting for a database that requires the same action on both sides.[Email protected]> Select Userenv ('

System version:Oracle Linux Server Release 5.7Database version:Oracle Database 11g Enterprise Edition Release 11.2.0.3.0-64bit ProductionPL/SQL Release 11.2.0.3.0-productionCORE 11.2.0.3.0 ProductionTNS for Linux:version 11.2.0.3.0-productionNlsrtl

Method 1: Log in to MySQL, do the set names Latin1 first, and then execute the UPDATE statement or execute the statement file MySQL>set names Latin1; Method 2: Specify set names latin1 in the SQL file, and then log in to MySQL and execute MySQL with

ORACLE12C database Management Common statements:Select name from V$database; #查看数据库名:Desc v$database;Select instance_name from V$instance; #数据库实例名The above three SQL statements can only be queried to the current connected instance and to the

from:http://blog.csdn.net/chid/article/details/6166506Linux under Change Oracle client Character set and service-side character set1.Linux under Change Oracle the client character set, which sets the environment variable " Nls_lang " the valueTo

1. Querying the character set of the Oracle server sideSql> select userenv (' language ')  from dual; USERENV (' LANGUAGE ')----------------------------------------------------American_america. zhs16gbksql>  or

1. View the database character set Client Character Set environment select * from Nls_instance_parameters, which originates from V$parameter, represents the setting of the client's character set, possibly a parameter file, an environment variable,

Create a database CREATE DATABASE [IF not EXISTS] CHARACTER SET [=] UTF8;The code in brackets is optional; Charater is created as the default character if you do not write.After you have created the database, you can:SHOW DATABASES;See how many

1. Start and stop the MySQL service, enter in CMD:net start (name) #启动服务net stop (name) #停止服务2. Log in to MySQL and enter it in CMD:- - - -H (address) #如果要退出MySQL, enter quit3. Create a database:Database Set = encoding method;4. View the list