Reference > Setting preferences > Setting memory preferences
 
Setting memory preferences
FileMaker Pro automatically records your changes as you work. These changes are stored temporarily in an area of your computer's (RAM) memory called the cache. You can specify the size of the cache and how often FileMaker Pro saves changes from the cache to the hard disk.
1. Windows: Choose Edit menu > Preferences.
OS X: Choose FileMaker Pro menu > Preferences.
2. In the Preferences dialog box, click the Memory tab, and then set the options you want to use.
 
To
Do this
Improve application performance
For Attempt to set file cache size to <n> MB, enter a higher value.
Changes take effect after you quit FileMaker Pro and start it again.
Save changes to disk when no one is working with the database file or the cache is full
For Save cache contents, click during idle time.
Save changes to your database file to disk at a specified interval (every 10 minutes, 15 minutes, 30 minutes, or hour) or when the cache is full
For Save cache contents, click every <n minutes> (or as necessary) and choose a time interval from the list.
Tip  Saving less often on battery-powered portable computers conserves power. Saving more often reduces the chance of data loss in a system crash.
3. Click OK.
Tip  You can force FileMaker Pro to save changes to disk by running a script that contains the Flush Cache to Disk script step.
Related topics 
Saving and copying files
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