November 2008
Intermediate to advanced
910 pages
27h 16m
English
book
Professional Microsoft® SQL Server® 2008 Administration
by Brian Knight, Ketan Patel, Wayne Snyder, Ross LoForte, Steven Wort
Content preview from Professional Microsoft® SQL Server® 2008 Administration
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19.3. Log Shipping Process
SQL Agent is used on the participating servers to execute the processes that implement log shipping. There are three main processes:
Back up the transaction log on the primary server. A SQL Agent job on the primary server backs up the transaction log at a user-configurable time interval to a file in a backup folder. By default, the file name is time-stamped to provide uniqueness—for example, databasename_yyyymmddhhmmss.trn. By default, the backup job is named LSBackup_databasename, and it executes an operating system command to back up the transaction log:
"C:\Program Files\Microsoft SQL Server\100\Tools\Binn\sqllogship.exe" -Backup 0E5D9AA6-D054-45C9-9C6B-33301DD934E2 -server SQLServer1
Copy the transaction log to the secondary server. A SQL Agent job on the secondary server uses UNC or a shared drive to access the backup folder on the primary server to copy the transaction-log file to a local folder on the secondary server. By default, the copy job is named LSCopy_servername_databasename, and it executes an operating system command to copy the transaction-log file:
"C:\Program Files\Microsoft SQL Server\100\Tools\Binn\sqllogship.exe" -Copy F2305BFA-B9E3-4B1C-885D-3069D0D11998 -server SQLServer2
Restore the transaction log on secondary server. A SQL Agent job on the secondary server restores the transaction log on the secondary server. To restore the transaction log, the database must be in either Standby or NORECOVERY mode. The default restore job name ...
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