Table of Contents - Sql Server Backup Academy 摘要 本期月报是SQL Server数据库备份技术系列文章的开篇,介绍三种常见的SQL Server备份方法的工作方式、使用T-SQL语句和使用SSMS IDE创建备份集三个层面,介绍SQL Server的三种常见备份的工作原理和使用方法。三种常见的备份包括: 数据库完全备份(Full Backup) 数据库日...
For an introduction to backup in SQL Server, see Backup Overview. Backup types The supported backup types depend on the recovery model of the database, as follows All recovery models support full and differential backups of data. Expand table Scope of backupBackup types Whole database Database...
For the devices in the above example, the correspondence between devices and media families is shown in the following table. Expandera tabell MirrorMedia family 1Media family 2Media family 3 0 Z:\AdventureWorks1a.bak Z:\AdventureWorks2a.bak Z:\AdventureWorks3a.bak 1 Z:\AdventureWorks1b.bak Z...
For an introduction to backup in SQL Server, see Backup Overview. Backup types The supported backup types depend on the recovery model of the database, as follows All recovery models support full and differential backups of data. Expand table Scope of backupBackup types Whole database Database...
To calculate the compression ratio of a backup, use the values for the backup in the backup_size and compressed_backup_size columns of the backupset history table, as follows: backup_size:compressed_backup_size For example, a 3:1 compression ratio indicates that you are saving about 66% on...
If a tail-log backup has incomplete metadata, in thebackupsettable,has_incomplete_metadatais set to1. Also, in the output ofRESTORE HEADERONLY,HasIncompleteMetadatais set to1. If the metadata in a tail-log backup is incomplete, thebackupfilegrouptable will be missing most of the information ab...
Learn about compression of SQL Server backups, including restrictions, performance trade-offs, Configuring backup compression, and the compression ratio.
@@ServerName returns wrong value in SQL SERVER 2008 ##TempTable and INSERT-SELECT FROM an existing Table with an IDENTITY column %rowtype equivalent in SQL server ++ operator in TSQL - bug or feature? 2 tables referencing each other using foreign key.is it possible 2 transactions in one sto...
Find out about the backup checksum default option. See how to use it to turn backup checksum on or off during SQL Server backup and restore operations.
Cron works by reading crontab (cron table) files for predefined commands and scripts set by the user or the system's administrator. Each user can have their own crontab, and there is also a system-wide crontab. Cron is driven by a daemon known as crond (cron daemon). This daemon checks...