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ORA-02015: cannot select FOR UPDATE from remote table ORACLE 报错 故障修复 远程处理

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ORA-02015: cannot select FOR UPDATE from remote table ORACLE 报错 故障修复 远程处理

文档解释

ORA-02015: cannot select FOR UPDATE from remote table

Cause: An attempt was made to select FOR UPDATE on a remote table (directly, or via a view) that had abstract data type columns, and the view or select list contained abstract data type columns or non-column items.

Action: To attempt a select FOR UPDATE, use a view or select list that consists only of base columns from the remote table, none of which may be abstract data type columns.

这是一个ORACLE的错误,表示无法从远程表中选择FOR UPDATE。

官方解释

ORA-02015报错是指不可以从远程表中选择 FOR UPDATE 条件。在Oralce中,用FOR UPDATE条件来对表中的行进行锁定,在对表行进行修改前,首先要锁定这些行,但是这种锁定是不可以应用在远程表上的,所以会引起这个错误。

常见案例

在执行update的操作时,如果使用了FOR UPDATE,但是实际操作的是远程表,就会报这个错误。

正常处理方法及步骤

1. 检查错误提示,可以清楚的判断出这是一个ORA-02015异常,而ORA-02015是指从远程表中不可以选择FOR UPDATE。

2. 检查表结构,确保当前操作的表实际是本地表,而不是远程表。

3. 合理不适用FOR UPDATE,改用union all方式来进行更新操作,来替代锁定行的操作。

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ORA-02015: cannot select FOR UPDATE from remote table ORACLE 报错 故障修复 远程处理

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