大数据量表数据导入导出

--1.导出:
expdp cux/ cux TABLES=CUX_GL_DEP_ACHIEVEMENT DUMPFILE=CUX_GL_DEP_ACHIEVEMENT.dmp DIRECTORY=BACKUP_DIR LOGFILE=CUX_GL_DEP_ACHIEVEMENT.exp.log
--2.导入:

impdp cux/ cux DIRECTORY=BACKUP_DIR DUMPFILE=CUX_GL_DEP_ACHIEVEMENT.dmp TABLE_EXISTS_ACTION=TRUNCATE LOGFILE=CUX_GL_DEP_ACHIEVEMENT.imp.log

grant read, write on directory BACKUP_DIR to cux;