ORA-39143: dump file “string” may be an original export dump file
Cause: A dump file was specified for an import operation which appears to have been created using the original export utility. These dump files cannot be processed by the Data Pump import utility.
Action: Try using the original import utility to process this dump file.
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ORA-39143错误指示导入失败，因为系统检测到正在使用的转储文件可能是之前导出的原始转储文件。这意味着系统检测出该转储文件没有使用最新的导出格式。