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ORA-55487: VPD constraints exist for the equivalent property ORACLE 报错 故障修复 远程处理

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ORA-55487: VPD constraints exist for the equivalent property ORACLE 报错 故障修复 远程处理

文档解释

ORA-55487: VPD constraints exist for the equivalent property

Cause: An attempt was made to make a property equivalent of another when some Oracle Virtual Private Database (VPD) constraints already existed for this property.

Action: Correct the input and try again.

ORA-55487是一个逻辑错误,由于在更新表中的VPD(私有属性)时,可能会出现现有约束的冲突。

官方解释

ORA-55487: 对等属性存在VPD约束,如果正在更新的表正在使用VPD,则可能导致约束冲突。

常见案例

在有VPD约束的情况下,如果更新表中的VPD,将会引发ORA-55487错误。如果在更新表中的VPD时,发现表中已存在一个等效属性存在,该错误也将会发生。

一般处理方法及步骤

1.检查VPD约束,查看是否会引起冲突。

2.检查表中是否存在等效属性。

3.检查用户当前所采用的约束是否与VPD约束存在冲突。

4.检查VPD的规则,查看VPD的规则是否会引起冲突。

5.如果确定VPD的约束可能会引起冲突,可以使用等效属性替代VPD,以规避该错误。

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ORA-55487: VPD constraints exist for the equivalent property ORACLE 报错 故障修复 远程处理

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