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ORA-40292: confidence level must be greater than 0 and less than 1 ORACLE 报错 故障修复 远程处理

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ORA-40292: confidence level must be greater than 0 and less than 1 ORACLE 报错 故障修复 远程处理

文档解释

ORA-40292: confidence level must be greater than 0 and less than 1

Cause: The specified value for confidence level is out of range.

Action: Specify a value for confidence level in the range 0

错误说明

ORA-40292错误是ORACLE数据库的一个通用错误,当程序尝试设置一个不符合要求的信任级别时就会引发这个错误。

“confidence level must be greater than 0 and less than 1” – 意思是信任级别必须大于0小于1。与这个相关的程序无法继续执行,直到信任级别的值调整到正确的范围内。

常见案例

ORA-40292错误最常见的案例是程序在程序中尝试使用一个错误的信任级别调用一个SQL函数时。例如,如果一个程序尝试调用DBMS_RLS.GRANT_SELECTC_WITH_GRANT_OPTION()函数,但是给它一个超出了范围的信任级别时,就会收到ORA-40292错误:

DECLARE

l_con_lvl NUMBER := 2;

BEGIN

DBMS_RLS.GRANT_SELECT_WITH_GRANT_OPTION(object_schema => ‘schema_name’, object_name => ‘table_name’, privilege => ‘SELECT’, authid => USER, grantee => USER,grantable => TRUE, trustworthy => TRUE, confidence => l_con_lvl);

END;

解决方法

要解决ORA-40292错误,需要确保调用SQL函数时提供的信任级别在0到1之间。在上面的例子中,信任级别应该设置为0.9。另外,也可以不传入信任级别参数,这样ORACLE会使用默认的信任级别值。

如果是使用DBMS_RAT定义信任级别,可以检查RAT_POLICY 表中的ENFORCEMENT_LEVEL 列中的值,确保它介于0-1之间,并且不要超过1。

此外,为了确保正确的信任级别值的使用,也可以使用DBMS_RLS.SET_DEFAULT_CONFIDENCE()函数dbsetset。 例如:

EXECUTE DBMS_RLS.SET_DEFAULT_CONFIDENCE(trust_level => .9);

之后,ORACLE将以0.9作为信任级别的默认值,所以不需要每次调用函数时都指定信任级别相关的参数。

总之,解决ORA-40292错误的关键是确保传入的信任级别值在0-1之间。

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ORA-40292: confidence level must be greater than 0 and less than 1 ORACLE 报错 故障修复 远程处理

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