ORA-14298: LOB column block size mismatch in ALTER TABLE EXCHANGE [SUB]PARTITION
Cause: The block sizes of a pair of corresponding LOB columns of the two tables specified in the ALTER TABLE EXCHANGE [SUB]PARTITION statement are different.
Action: Ensure that the block sizes of corresponding pairs of LOB columns of the tables involved in the ALTER TABLE EXCHANGE [SUB]PARTITION statement are the same.
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ORA-14298:”LOB column block size mismatch in ALTER TABLE EXCHANGE [SUB]PARTITION”,意思是”使用ALTER TABLE EXCHANGE [SUB]PARTITION 命令与某个LDT(大对象数据类型)列大小不匹配”。
1)重新指定子句中涉及到的分区块大小;
2)确保要交换的LDT字段块大小是一样的;
3)尝试更改表的块大小,以增加源表中的LOB列的大小;
4)尝试重新构建原始的表,并使用正确的列块大小;
5)或者在alter table exchange partition 子句中指定具有相同块大小的替代表;
6)仔细检查目标表和源表中分区重叠情况,并按需修改分区名称。