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ORA-12840: cannot access a remote table after parallel/insert direct load txn ORACLE 报错 故障修复 远程处理

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ORA-12840: cannot access a remote table after parallel/insert direct load txn ORACLE 报错 故障修复 远程处理

文档解释

ORA-12840: cannot access a remote table after parallel/insert direct load txn

Cause: Within a transaction, an attempt was made to perform distributed access after a PDML or insert direct statement had been issued.

Action: Commit/rollback the PDML transaction first, and then perform the distributed access, or perform the distributed access before the first PDML statement in the transaction.

ORA-12840: 不能在并行/插入直接加载 txn 之后访问远程表

官方解释

ORA-12840: 这是一个错误代码,表明您在并行/插入直接加载 txn 之后,不能访问远程表。

常见案例

当您在 Oracle 数据库中使用并行/插入直接加载 txn 时,可能会出现此错误。并行/插入直接加载 txn显示在 Oracle 服务器中在远程表上隐藏查询,然后将结果插入到目标表中。

正常处理方法及步骤

您可以使用 DBLINK 查询远程源表,然后使用查询数据将其插入到想要的目标表中。此外,可以使用索引进行直接访问,这可以最大限度地减少远程表上的访问次数,减少数据传输时间。此外,您可以运行数据库调优建议以降低您的 SQL 性能。

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ORA-12840: cannot access a remote table after parallel/insert direct load txn ORACLE 报错 故障修复 远程处理

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