4D v13.4
FLUSH BUFFERS
- 4D Language Reference
-
- 4D Environment
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- ADD DATA SEGMENT
- Application file
- Application type
- Application version
- BUILD APPLICATION
- Compact data fileUpd
- COMPONENT LIST
- CREATE DATA FILEUpd
- Data file
- DATA SEGMENT LIST
- FLUSH BUFFERS
- Get 4D folderUpd
- Get database localization
- Get database parameterUpd
- GET MEMORY STATISTICS
- GET SERIAL INFORMATION
- Get table fragmentation
- Is compiled mode
- Is data file locked
- NOTIFY RESOURCES FOLDER MODIFICATION
- OPEN ADMINISTRATION WINDOW
- OPEN DATA FILEUpd
- OPEN SECURITY CENTER
- OPEN SETTINGS WINDOWUpd
- PLUGIN LIST
- QUIT 4D
- SET DATABASE LOCALIZATION
- SET DATABASE PARAMETERUpd
- Structure file
- VERIFY CURRENT DATA FILE
- VERIFY DATA FILE
- Version typeUpd
FLUSH BUFFERS
| FLUSH BUFFERS | ||||||||
| Does not require any parameters | ||||||||
The FLUSH BUFFERS command immediately saves the data buffers to disk. All changes that have been made to the database are stored on disk.
You usually do not need to call this command, as 4D saves data modification on a regular basis. The Flush Data Buffers every X Minutes option (Data Management page of the Preferences), which specifies how often to save, is typically used to control buffer flushing.
Note: 4D integrates a built-in data cache scheme for accelerating I/O operations. The fact that data modifications are, for some time, present in the data cache and not on the disk is transparent to your coding. For example, if you issue a QUERY call, the 4D database engine integrates the data cache in the query operation.
Product: 4D
Theme: 4D Environment
Number:
297
Created: < 4D v6
