rac expdp导出时报错：ORA-31693: Table data object "scott"."dept" Failed to load/unload and is being skipped due to error:ORA-31617: unable to open dump file "/home/oraclerac/dump_dir/oravs_expdp_05.dmp" for writeORA-19505: Failed to identify file "/home/oraclerac/dump_dir/oravs_expdp_05.dmp"ORA-27037: unable to obtain file status错误原因：在RAC环境下如果ParaLLEL参数设置大于1，进程会在RAC的各个节点上进行导出。如果导出目录不共享的话就会报错解决方法：1、设置为共享的directory；2、导出语句添加cluster=n选项，指定只在本地导出
