Oracle与SQL Server数据类型对应关系

SQL Server 数据类型	Oracle 数据类型
bigint	NUMBER
binary	LONG RAW NOT NULL
bit	NUMBER (1, 0)
char	VARCHAR2 (900) NOT NULL
datetime	DATE
decimal	NUMBER (255, 3) NOT NULL
float	FLOAT NOT NULL
image	LONG RAW
int	NUMBER (255, 3) NOT NULL
money	NUMBER (255, 3) NOT NULL
nchar	VARCHAR2 (2000) NOT NULL
ntext	LONG
numeric	NUMBER (255, 3) NOT NULL
nvarchar	VARCHAR2 (2000) NOT NULL
real	FLOAT NOT NULL
smallint	NUMBER (255, 3) NOT NULL
smalldatetime	DATE NOT NULL
smallmoney	NUMBER (255, 3) NOT NULL
sql_variant	LONG
sysname	CHAR(255)
text	LONG
timestamp	RAW (255)
tinyint	NUMBER (255, 3) NOT NULL