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SAP Basis

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ADM100 Lesson: Backing Up the Database Contents<br />

We strongly recommend that you perform complete data backups every<br />

day.<br />

Some databases offer the option of performing differential or incremental<br />

data backups that do not backup the complete data of the database (these<br />

data backups are described in the following as partial data backups). If<br />

you use a partial data backup as your daily backup, you must perform a<br />

complete data backup at least once a week. There must be at least four<br />

complete data backups contained in the backup cycle.<br />

The log information should be backed up at least once a day. We<br />

recommend that you always have two different backup media containing<br />

thesameinformation.<br />

Perform a data and log info backup with verification of the backup media<br />

at least once in the backup cycle.<br />

Scheduling and Monitoring Backups<br />

In this section, you should demonstrate the described actions using<br />

transactions DB13 and DB12. You can also show the relevant section of<br />

theonlinedocumentation.Ifyouarevery familiar with the principles of<br />

DBMGUI operation, you can also “risk” a view at operating system level.<br />

In the <strong>SAP</strong> system, you can schedule and monitor regular database<br />

backups with transaction DB13.<br />

Select the data backup procedure for each week day (recommendation:<br />

the database-specific procedure for complete data backup) and enter the<br />

repetitionperiod(suchas1).Choosethestarttimeorimmediatestart.<br />

If a manual medium swap is required, if you are, for example, using a local<br />

tape station, check which medium is required for the next backup every<br />

daybychoosingtheVols needed button, and insert this medium before the<br />

start of the backup.<br />

Enter the log info backup for every week day in the same way as the data<br />

backup.<br />

2003/Q3 © 2003 <strong>SAP</strong> AG. All rights reserved. 157

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