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ORA-24340: cannot support more than 255 columns ORACLE 报错故障修复远程处理

2023-11-05 18:44

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文档解释

ORA-24340: cannot support more than 255 columns

Cause: The number of columns exceeds maximum supported by the server.

Action: Limit your operation to 255 columns.

官方解释

ORA-24340: 该表类型不支持超过 255 个列。

该错误消息指出表类型不支持超过 255 个列。通常情况下，此消息显示对在一组基表上的联接、拼接或子查询中使用的字段计数超过限制。

一般处理方法及步骤

1. 检查SQL语句是否存在重复字段，如果有，则移除多余字段。

2. 尝试分解查询或使用视图、集成表或临时表，以确保SQL语句中的字段数量不超过255个。

3. 如果拆分失败，则使用join检查多个表之间是否有字段重复。如果有重复，则使用最小字段数移除重复字段。

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