有关页校验和及页残缺检测的详细信息,请参阅 ALTER DATABASE 语句的 PAGE_VERIFY 选项。 有关详细信息,请参阅 ALTER DATABASE SET 选项 (Transact-SQL)。 无论是否存在页校验和,BACKUP 都会为备份流生成一个单独的备份校验和。 还原操作可使用(可选)备份校验和来验证该备份是否损坏。 备份校验和...
We have also heard thatbackups must be tested, because in an unfortunate event, a database restore of a backup might not work. Now, with this said, I invite you to ask yourself a question: are you sure you are properly testing your backups? Some might think that since the backup was...
在SMO 中,Backup类和Restore类是为实现特定备份和还原任务提供工具的实用工具类。 对象Backup表示所需的特定备份任务,而不是服务器实例上的Microsoft SQL Server 对象。 如果发生数据丢失或损坏,则必须完全或部分还原备份。 部分还原使用FileGroupCollection集合将要进行还原的数据分成段。 如果要对事务日志进行备份,则可以...
现在,假如你更改文件数据备份区域的一个字节,然后在那个文件上运行RESTORE VERIFYONLY的话,会产生如下提示: Server: Msg 3189, Level 16, State 1, Line 1 Damage to the backup set was detected. Server: Msg 3013, Level 16, State 1, Line 1 VERIFY DATABASE is terminating abnormally. 下图显示了运行过...
--Back up a whole database BACKUP DATABASE { database_name | @database_name_var } TO <backup_device> [ ,...n ] [ <MIRROR TO clause> ] [ next-mirror-to ] [ WITH { DIFFERENTIAL | <general_WITH_options> [ ,...n ] } ] [;] --Back up specific files or filegroups BACKUP ...
4、16, State 1, Line 1Damage to the backup set was detected.Server: Msg 3013, Level 16, State 1, Line 1VERIFY DATABASE is terminating abnormally.下图显示了运行过程: RESTORE VERIFYONLY终于按照我们期望的方式工作了。在备份期间使用CHECKSUM选项会引起SQL Server执行如下操作:为备份数据计算校验和。这个...
SQL Backup Pro Redgate helps IT teams balance the need to deliver software faster with the need to protect and preserve business critical data. Your business benefits from a DevOps approach to database development, while staying compliant and minimizing risk....
In SQL Backup Pro, you can include a database integrity check (DBCC CHECKDB) as part of a scheduled restore job, to verify that your backups can be used. However, this process will not work with backups of the master database (which are restored for test purposes as a user database)...
[ ,...n ] TO <backup_device> [ ,...n ] [ <MIRROR TO clause> ] [ next-mirror-to ] [ WITH { DIFFERENTIAL | <general_WITH_options> [ ,...n ] } ] [;] Creating a Partial Backup BACKUP DATABASE { database_name | @database_name_var } READ_WRITE_FILEGROUPS [ , <read_...
Under the Reliability section is the option to Verify the backup after completed, as well as to perform a checksum: You can also use T-SQL commands to verify the readability of the backup file. Once a backup is created, whether through Enterprise Manager, SSMS, or T-SQL, you can issue ...