导出
DIRECTORY=DATA_DIR
LOGFILE=SQL_201704120914.log
DUMPFILE=SQL_201704120914.dmp
SCHEMAS='XXX',,'XXX'
CONTENT=METADATA_ONLY
expdp \'/ as sysdba\' parfile=google.par
导入产生SQL，并不会实际执行导入过程
DIRECTORY=DATA_PUMP_DIR
LOGFILE=imp_SQL_201704120914.log
DUMPFILE=SQL_201704120914.dmp
INCLUDE=TABLE
SQLFILE=jdcw.sql
impdp \'/ as sysdba\' parfile=google.par