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HomeDatabaseMysql TutorialORA-00911: 无效字符 解决

程序添加了异常处理模块,但是捕获到错误后没有进行进一步处理,因此当执行到存储过程这一部分时,程序没有执行UPDATE操作,也没

今天帮同事调一个存储过程。存储过程比较长,问题出现在类似下面的一段代码上。

BEGIN

EXECUTE IMMEDIATE 'UPDATE '|| v_table_name || ' SET ' || v_column_name || ' = :column_value WHERE ID = :id'

USING V_COLUMN_VALUE, V_ID;

COMMIT;

EXCEPTION

WHEN OTHERS THEN

ROLLBACK;

END;

程序添加了异常处理模块,但是捕获到错误后没有进行进一步处理,因此当执行到存储过程这一部分时,程序没有执行UPDATE操作,也没有报错。

首先,检查了UPDATE语句,似乎没有什么问题。于是在EXCEPTION模块中将SQLCODE和SQLERRM打印处理。

运行后得到的错误是:ORA-00911: 无效字符。

于是怀疑是传递的参数有问题,检查了v_table_name、v_column_name、V_COLUMN_VALUE和V_ID的值都没有问题。

只好将生成的UPDATE语句打印出来。检查了一下,也没有发现任何问题。

感觉十分奇怪,于是查了查Oracle的Error Reference:

ORA-00911 invalid character

Cause: Special characters are valid only in certain places. If special characters other than $, _, and # are used in a name and the name is not enclosed in double quotation marks ("), this message will be issued. One exception to this rule is for database names; in this case, double quotes are stripped out and ignored.

Action: Remove the invalid character from the statement or enclose the object name in double quotation marks.

似乎看上去是列名或表名中包含了不正确的字段,又仔细检查了一遍了生成的UPDATE语句的表名和列名,都是很平常的字母。

V_COLUMN_VALUE是个字符串,其中包含中文,会不会是由于当前环境对中文支持有问题。换了个环境测试,也没有问题。

仔细检查了数据库中的字段名和表名,确认不是以小写格式存放的。

又检查了一般输入的四个参数,,而且检查了它们的长度,已经是否存在不可见的字符。仍然没有任何收获。

不使用绑定变量,将四个参数都传入到字符串中,拼成完成的UPDATE语句。然后放到SQLPLUS中执行。居然仍然报错。

这时的UPDATE语句已经简单到下面的格式,仍然在报错。

SQL> UPDATE T SET NAME = '中文and1234' WHERE ID = 1;

UPDATE T SET NAME = '中文and1234' WHERE ID = 1

*

ERROR 位于第 1 行:

ORA-00911: 无效字符

最后终于发现,原来第一个等号“=”被同事敲成了中文的等号了。

郁闷,我们两个人调了将近一个小时,居然是这个错误。

本文永久更新链接地址

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