Why backup msdb

To work out the frequency of transaction log backups, also take the fill rate of the log into account. This depends on the size of the transaction log and the transaction rate on your system.

Whenever a transaction log is backed up, it is truncated. This means old entries are deleted so that enough space is available for new entries. Consequently, if the log is not backed up frequently enough, it will grow until the disk is full and no more changes to the SAP database are possible. You can use log shipping to feed transaction logs from one database to another on a constant basis.

Continually backing up the transaction logs from a source database and then copying and restoring the logs to a destination database keeps the destination database synchronized with the source database. You can use the Database Maintenance Plan Wizard to configure log shipping as a maintenance task that can be scheduled to run automatically at defined intervals.

Log shipping enables you to run a backup server and provides high availability as required by large enterprise systems. Log shipping requires extra administration and well-defined procedures to monitor the status of all log-shipping servers. Do not use log shipping to replace a robust and validated disaster recovery plan.

It merely provides a high availability solution for large enterprise systems. A Windows backup is only possible when the SQL Server is stopped because open files cannot be backed up.

The database must be offline and the SQL Server shut down. The backup of these files is necessary for a restore operation when the disk on which SQL Server and SAP executables are located crashes. In addition, it serves as an additional backup that may play a vital role in dealing with emergency situations where other routine backups have been damaged.

To perform a full Windows backup, you use the Windows Backup tool. Use the auxiliary Windows server system to backup the files. For information on how to proceed, refer to the Windows documentation. Never use a full Windows backup for regular database backups that are part of a predefined backup and restore strategy. When you restore such a Windows backup, the database and transaction log files are restored to the state they were at the time you ran the Windows backup. No subsequent differential or log backups can be applied.

Therefore you can not do a point-in-time database recovery. This means that the changes you made to the database since the last Windows backup are lost and cannot be redone. These tables are used to restore the Log Shipping information. Log Shipping is a feature used to have a secondary server ready in case that the primary server fails.

This method uses Transaction Logs to replicate the data. Figure 6. Log Shipping system tables. Whenever you change the Log Shipping configuration option it is a good practice to backup the msdb database. Figure 7. Creating a new job. Figure 8. General job information. Figure 9. Job steps. Specify a name. In the type, select Power Shell and in the Command, write the following commands:.

The backup-sqlDatabase cmdlet, is used to backup databases. Figure Powershell Backup Cmdlet. New Schedule. Schedule information. The Alerts page. We will generate an alert if the Database file of the test database rises above 10, Kb:. Alert options. Press OK to save the job. Once the job is create right click the Operators folder and select New Operator:. Creating a new operator. New operator properties.

Consider purging your MSDB backup history of data older than 60 days. You can do this in a couple of different ways:. To finish, double click on the task, choose the type of cleanup you want to do, and how much data you wish to retain. I will sometimes create two tasks, because I care less about Agent Job history and Maintenance Plan history than I do about backups, and I usually want my backup history to match my data retention policy.

Either way, if your server has a large amount of history, this step will take a loooong time to run the first time.