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ORA-55490: VPD constraint may not be assigned to an equivalent property ORACLE 报错 故障修复 远程处理

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ORA-55490: VPD constraint may not be assigned to an equivalent property ORACLE 报错 故障修复 远程处理

文档解释

ORA-55490: VPD constraint may not be assigned to an equivalent property

Cause: An attempt was made to assign an Oracle Virtual Private Database (VPD) constraint to a property declared to be an equivalent of another.

Action: Assign the VPD constraint to the property that is the target of the equivalent property.

ORA-55490:VPD constraint may not be assigned to an equivalent property

该错误消息指出,无法给同等属性分配VPD(虚拟私有数据库)约束。VPD可以用来为存储在数据库中的数据创建逻辑查询和行级安全性约束,会检查数据表中的行和列,并分配一个策略,以确定用户可以访问和更新数据库中的哪些行。

官方解释

该错误消息与 Oracle 数据库中的VPD(虚拟私有数据库)约束相关,该约束可以用于在行级别保护数据。VPD约束可以在任何查询对象(表,视图,聚合或索引)之前定义,以便在访问数据时为这些查询对象分配策略。

常见案例

此ORA-55490错误通常可以由以下原因造成:

-尝试将VPD约束应用于同等属性。

-在应用VPD约束时,索引被重新创建,并且索引功能被改变了。

一般处理方法及步骤

1.确认发出此错误的用户是否已拥有VPD必需的表空间权限。

2.尝试删除索引重新创建,或将VPD约束应用于不同的属性。

3.如果上述两个操作都不起作用,可以考虑使用DBA_VPD_POLICY表来确保已经正确设置了VPD_POLICY和VPD_INDEX的值。

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ORA-55490: VPD constraint may not be assigned to an equivalent property ORACLE 报错 故障修复 远程处理

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