fast delete, Best practice on Very large table

Today I read foreign blog,I think I learned the true knowledge
One of most operations we are performing is “Deleting many rows from oracle big tables” ;

利用rowid快速在线更新海量数据

declare
maxrows number default 1000;
row_id_table dbms_sql.Urowid_Table;
currcount_table dbms_sql.number_Table;
cursor cur_t2 is….

sql server 备份文件ftp批处理

sql server 的维护计划可以定期的备份与删除备份文件,下面只提供备份文件从OS角度的处理方法,如何压缩传ftp,及删除过期的压缩文件