oracle数据库单张表的导出及备份
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