我们看到这个过程和之前ALTER DATABASE CHARACTER SET操作的内部过程是完全相同的,也就是说INTERNAL_USE提供的帮助就是使Oracle数据库绕过了子集与超集的校验. 这一方法在某些方面是有用处的,比如测试;应用于产品环境大家应该格外小心,除了你以外,没有人会为此带来的后果负责。 结语(我们不妨再说一次): 对于DBA来说,...
character_set_database 用于设置默认数据库的字符集。 权限要求 查询变量 Global 级别 sys 租户和所有用户租户均可以使用 SHOW VARIABLES 语句或视图 SYS.TENANT_VIRTUAL_GLOBAL_VARIABLE(Oracle 模式)及视图 information_schema.GLOBAL_VARIABLES(MySQL 模式)查看 Global 系统变量的值。 Session 级别 sys 租户和所有用户...
PL/SQL database character set(AL32UTF8) and Client character set(ZHS16GBK) are different 这是由于安装oracle客户端的时候没有设置对字符集造成的,没啥大问题,不影响使用,但是还是收拾好了比较爽一些。解决方法很简单。 启动PL/SQL Developer 报字符编码不一致错误 Database character set (AL32UTF8) and ...
Oracle Database Backup Service - Version N/A and laterInformation in this document applies to any platform.SymptomsDatabase was created using dbca and selected template : General purpose.WE8ISO8859P15 is the selected character set. Post database creation NLS_DATABASE_PARAMETERS shows US7ASCII as...
SQL> ALTER SYSTEM SET AQ_TM_PROCESSES=0; System altered. SQL> alter database open; Database altered. SQL> ALTER DATABASE CHARACTER SET ZHS16GBK; ALTER DATABASE CHARACTER SET ZHS16GBK ERROR at line 1: ORA-12712: new character set must be a superset of old character set ...
SQL>ALTER DATABASE NATIONAL CHARACTER SETINTERNAL_USEUTF8; SQL>SHUTDOWN immediate; SQL>startup; 如果按上面的做法做,National charset的区域设置就没有问题 5.2修改dmp文件字符集 上文说过,dmp文件的第2第3字节记录了字符集信息,因此直接修改dmp文件的第2第3字节的内容就可以‘骗’过oracle的检查。这样做理论...
2.4数据库字符集(oracle服务器端字符集) 数据库字符集在创建数据库时指定,在创建后通常不能更改。在创建数据库时,可以指定字符集(CHARACTER SET)和国家字符集(NATIONAL CHARACTER SET)。 2.4.1字符集 (1)用来存储CHAR, VARCHAR2, CLOB, LONG等类型数据 ...
Note: you can set the client character set through the NLS_LANG environment variable or the NLS_LANG registry key in HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\KEY_OraClient10g_home2. 最近才碰到的问题: 我在这样处理的: 在 在注册表下:修改:NLS_LANG ...
ALTER DATABASE CHARACTER SET WE8MSWIN1252; SHUTDOWN IMMEDIATE; STARTUP; WouldMigrating Character Data Using a Full Export and Import+Migrating a Character Set Using the CSALTER Scriptas stated below be needed? https://docs.oracle.com/cd/B19306_01/server.102/b14225/ch11charsetmig.htm#CEGHD...
To create a CharacterSet use oracle.sql.CharacterSetFactory. There is no notion of "unsupported" character set. CharacterSet's can be created with any oracleId. However, there is a notion of unsupported conversions and the current implementation is limited to the small number of character sets ...