单张表导出:
导出表结构---exp user/pwd tables=tab_name
rows=n file=tab_name.dmp
导出表结构+表数据---exp user/pwd tables=tab_name
rows=y file=tab_name.dmp
备份单张表:
备份表结构+数据:create table tablenamebackup as select * from
tablename where 1=1
备份表结构:create table
tablenamebackup as select * from tablename where 1=2