CHECKPOINT¶
Function¶
A checkpoint is a point in the transaction log sequence at which all data files have been updated to reflect the information in the log. All data files will be flushed to a disk.
CHECKPOINT forces a transaction log checkpoint. By default, WALs periodically specify checkpoints in a transaction log. You may use gs_guc to specify run-time parameters checkpoint_segments and checkpoint_timeout to adjust the atomized checkpoint intervals.
Precautions¶
Only a system administrator has the permission to call CHECKPOINT.
CHECKPOINT forces an immediate checkpoint when the related command is issued, without waiting for a regular checkpoint scheduled by the system.
Syntax¶
CHECKPOINT;
Parameter Description¶
None
Examples¶
Set a checkpoint:
CHECKPOINT;