impdp分区表约束违反后导致部分数据导入table_exists_action=truncate

分区表只会truncate 一次，但是每个分区独立导入，单个分区的数据整体导入。不同分区的数据可以分别导入。

impdp ? ?directory= ?dumpfile= ??remap_schema= ?exclude=STATISTICS table_exists_action=truncate cluster=no parallel=4 tables=?

?Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
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ORA-31693: ?failed to load/unload and is being skipped due to error:
ORA-29913: ?error in executing ODCIEXTTABLEFETCH callout
ORA-02290: ?Check violated

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. . imported ??7.312 KB ??????5 rows
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