Sybase ASA数据库自动备份的简易实现

主要就是通过它的Event功能来实现，Event如同定时任务，到时间就触发，触发时你可以调用很多东西。

看看下边两个简单示例：

看看下边的两个简单的例子：

1. 从第一个磁带开始自动备份，每天零晨1点开始自动执行。

Instruct the database server to carry out an automatic backup to tape using the first tape drive, every day at 1 A.M.

CREATE EVENT DailyBackup
SCHEDULE daily_backup
START TIME '1:00AM' EVERY 24 HOURS
HANDLER
   BEGIN
      BACKUP DATABASE TO '\\\\.\\tape0'
      ATTENDED OFF
   END;
  

2. 每天8点到下午6点，每个小时做一次事务日志的自动备份，备份到目录c:\database\backup

Instruct the database server to carry out an automatic backup of the transaction log only, every hour, Monday to Friday between 8 A.M. and 6 P.M.

CREATE EVENT HourlyLogBackup
SCHEDULE hourly_log_backup
BETWEEN '8:00AM' AND '6:00PM'
EVERY 1 HOURS ON
   ('Monday','Tuesday','Wednesday','Thursday','Friday')
HANDLER
   BEGIN
      BACKUP DATABASE DIRECTORY 'c:\\database\\backup'
      TRANSACTION LOG ONLY
      TRANSACTION LOG RENAME
   END; 

这个功能，相比其它数据库而言，真是非常强大而且方便。