浅谈Sybase的备份与恢复及常见问题解决

上一篇写了Sybase的安装,下面就讲一下备份与恢复.这两步也是必须会的.必须掌握的.

1.1 备份

首先说一下备份.

备份的命令是

dump database 数据库名字 to 路径.

我们先用命令连接sybase

isql -U sa -P -S 192.168.1.45:5000

然后我们输入,却出现了一个一个问题

C:/Documents and Settings/Piggy>isql -U sa -P -S 192.168.1.45:5000
1> Dump database test to 'c:test.dump'
2> go
Msg 7205, Level 17, State 2:
Server 'STANDWINXP', Line 1:
Can't open a connection to site 'SYB_BACKUP'. See the error log file in the ASE
boot directory.
Msg 7205, Level 18, State 3:
Server 'STANDWINXP', Line 1:
Can't open a connection to site 'SYB_BACKUP'. See the error log file in the ASE
boot directory.
1>

被告知不能打开SYB_BACKUP的链接.此时不能进行备份操作.现在就来解决这个问题.

我们先来看一下sybase目录中的一个文件

C:/sybase/OCS-15_0/bin 下面的dsedit.exe.双击后看到

然后我们在看一下数据库master对应的系统表中sysservers中

因为我这个是修改过的,如果没有修改的话,在对应srvname为SYB_BACKUP的那条数据的srvnetname为null.也就是我们要更改这个值.

结合上面的两个图片,我们要把这里写成STANDWINXP_BS. 然后重启服务器.并且对应的服务必须开启否则会失败.

然后重新备份.

C:/Documents and Settings/Piggy>isql -U sa -P -S 192.168.1.45:5000
1> use test
2> go
1> dump database test to "c:test.dmp"
2> go
Backup Server session id is:  12.  Use this value when executing the
'sp_volchanged' system stored procedure after fulfilling any volume change
request from the Backup Server.
Backup Server: 6.28.1.1: Dumpfile name 'test1020907F4A   ' section number 1
mounted on disk file 'c:test.dmp'
Backup Server: 4.188.1.1: Database test: 1404 kilobytes (39%) DUMPED.
Backup Server: 4.188.1.1: Database test: 1726 kilobytes (100%) DUMPED.
Backup Server: 3.43.1.1: Dump phase number 1 completed.
Backup Server: 3.43.1.1: Dump phase number 2 completed.
Backup Server: 3.43.1.1: Dump phase number 3 completed.
Backup Server: 4.188.1.1: Database test: 1740 kilobytes (100%) DUMPED.
Backup Server: 3.42.1.1: DUMP is complete (database test).

此时就已经成功了.

1.2 恢复

恢复用此命令

load database JbpmTAStandard from 'c:/JbpmTAStandard.dump'

恢复后要用命令激活一下:

isql>online database 数据库名字

isql>go