数据泵导入导出

使用数据泵需要先建directory
create directory dump_scott as'/home/oracle/dump/scott'
查看建立的目录
Select * from dba_directories
赋权
Grant read,write on directory dump_scott to scott
 
导出案例1，按表导出
expdp scott/tiger directory=dump_scottdumpfile=tab.dmp logfile=scott.log tables=dept,emp
 
导出案例2，按用户导出
expdp scott/tiger directory=dump_scottdumpfile=dumpscott.dmp schemas=scott
 
导出案例3，全库导出，且并行导出
expdp scott/tiger directory=dump_scott dumpfile=full.dmp parallel=4 full=y
 
导入案例1，按表导入，从scott到scott2
impdp scott2/tiger directory=dump_scott dumpfile=tab.dmp tables=scott.dept,scott.emp remap_schema=scott:scott2
 
导入案例2，按用户导入，从scott到scott2
impdp scott/tiger directory=dump_scott dumpfile=schema.dmp remap_schema=scott:scott2
 
导入案例3，全库导入
impdp scott/tiger directory=dump_scottdumpfile=full.dmp full=y
 
导入案例4，无落地文件的用户拷贝，需要建立db link
impdp scott/tiger directory=dump_scott network_link=remote_link remap_schema=scott:scott2