Oralce数据库常用预定义例外：

EXCEPTION

WHEN CURSOR_ALREADY_OPEN THEN-- ORA-06511 SQLCODE = -6511 游标已经打开

WHEN DUP_VAL_ON_INDEX THEN

-- ORA-00001 SQLCODE = -1 向唯一索引中插入重复数据

WHEN INVALID_CURSOR THEN

-- ORA-01001 SQLCODE = -1001 非法游标操作

WHEN INVALID_NUMBER THEN-- ORA-01722 SQLCODE = -1722 字符向数字转换失败

WHEN LOGIN_DENIED THEN

-- ORA-01017 SQLCODE = -1017

WHEN NO_DATA_FOUND THEN

-- ORA-01403 SQLCODE = +100 没有找到数据

WHEN NOT_LOGGED_ON THEN

-- ORA-01012 SQLCODE = -1012

WHEN PROGRAM_ERROR THEN

-- ORA-06501 SQLCODE = -6501 程序错误

WHEN STORAGE_ERROR THEN

-- ORA-06500 SQLCODE = -6500

WHEN TIMEOUT_ON_RESOURCE THEN

-- ORA-00051 SQLCODE = -51

WHEN TOO_MANY_ROWS THEN-- ORA-01422 SQLCODE = -1422 返回多行

WHEN TRANSACTION_BACKED_OUT THEN

-- ORA-00061 SQLCODE = -61

WHEN VALUE_ERROR THEN

-- ORA-06502 SQLCODE = -6502 数值转换错误

WHEN ZERO_DIVIDE THEN

-- ORA-01476 SQLCODE = -1476 被零除

WHEN OTHERS THEN-- 其它任何错误的处理

END;

--用户定义的例外

DECLARE

FIND_DATA_EMP EXCEPTION;

BEGIN

IF ... THEN

RAISE FIND_DATA_EMP;

END IF;

EXCEPTION

WHEN LOB_NO_LOCKED THEN

...

END;