10g中如何修改数据库字符集-4

10g 中如何修改字符集？

对于oracle10g，已经完全跟8i 9i不一样了，不再使用alter database 命令，metalink解释如下:

Using the "ALTER DATABASE CHARACTER SET"command in 8i or 9i and CSALTER in 10g and up.

首先我们来看下scan.txt的内容：

[Scan Summary]

All character type data in the data dictionary areconvertible to the new character set

All character type application data are convertible tothe new character set

[Data Dictionary Conversion Summary]

Datatype Changeless Convertible Truncation Lossy

--------------------- -------------------------------- ---------------- ----------------

VARCHAR2 1,922,959 0 0 0

CHAR 1,104 0 0 0

LONG 146,008 0 0 0

CLOB 22,544 1,215 0 0

VARRAY 24 0 0 0

--------------------- -------------------------------- ---------------- ----------------

Total 2,092,639 1,215 0 0

Total in percentage 99.942% 0.058% 0.000% 0.000%

The data dictionary can be safely migrated using theCSALTER script

[Application Data Conversion Summary]

Datatype Changeless Convertible Truncation Lossy

--------------------- -------------------------------- ---------------- ----------------

VARCHAR2 28,702 2 0 0

CHAR 0 0 0 0

LONG 0 0 0 0

CLOB 0 0 0 0

VARRAY 1,575 0 0 0

--------------------- -------------------------------- ---------------- ----------------

Total 30,277 2 0 0

Total in percentage 99.993% 0.007% 0.000% 0.000%

[Distribution of Convertible, Truncated and Lossy Databy Table]

USER.TABLE Convertible Truncation Lossy

------------------------------------------------------------------ ---------------- ----------------

MDSYS.SDO_COORD_OP_PARAM_VALS 200 0 0

MDSYS.SDO_GEOR_XMLSCHEMA_TABLE 1 0 0

MDSYS.SDO_STYLES_TABLE 78 0 0

MDSYS.SDO_XML_SCHEMAS 3 0 0

ROGER.HT01 2 0 0

SYS.METASTYLESHEET 80 0 0

SYS.RULE$ 1 0 0

SYS.WRH$_SQLTEXT 381 0 0

SYS.WRH$_SQL_PLAN 347 0 0

SYS.WRI$_DBU_FEATURE_METADATA 98 0 0

SYS.WRI$_DBU_FEATURE_USAGE 7 0 0

SYS.WRI$_DBU_HWM_METADATA 19 0 0

------------------------------------------------------------------ ---------------- ----------------