ORA-14758: Last partition in the range section cannot be dropped

文档解释

ORA-14758: Last partition in the range section cannot be dropped

Cause: An attempt was made to drop the last range partition of an interval partitioned table.

Action: Do not attempt to drop this partition.

ORA-14758错误指当某一分区被删除，而它所在的分区区间中仅剩一个分区时，就会发生该错误。

官方解释

ORA-14758: Last partition in the range section cannot be dropped

Cause: Attempted to drop the last partition in a range section by itself.

Action: Drop the entire range section.

常见案例

例如一个表table1，有两个分区：分区 p1 和 p2，如果按照一般流程进行操作：

SQL> ALTER TABLE table1 DROP PARTITION p1;

操作会报ORA-14758: Last partition in the range section cannot be dropped 错误

正常处理方法及步骤

1、改为一步删除p1和p2的区间：

SQL> ALTER TABLE table1 DROP PARTITION p1, p2;

2、两步结合操作删除p1和p2的区间：

SQL> ALTER TABLE table1 SPLIT PARTITION p2 INTO(PARTITION P2_SPLIT1, PARTITION P2_SPLIT2);

SQL> ALTER TABLE table1 DROP PARTITION P1,P2_SPLIT1;

在一步的操作中，只有P2_SPLIT2分区保留。