CHECKPOINT
CHECKPOINT — force a write-ahead log checkpoint
Synopsis
CHECKPOINT
Description
A checkpoint is a point in the write-ahead log sequence at which all data files have been updated to reflect the information in the log. All data files will be flushed to disk. Refer toSection 28.5 for more details about what happens during a checkpoint.
TheCHECKPOINT command forces an immediate checkpoint when the command is issued, without waiting for a regular checkpoint scheduled by the system (controlled by the settings inSection 19.5.2).CHECKPOINT is not intended for use during normal operation.
If executed during recovery, theCHECKPOINT command will force a restartpoint (seeSection 28.5) rather than writing a new checkpoint.
Only superusers or users with the privileges of thepg_checkpoint role can callCHECKPOINT.
Compatibility
TheCHECKPOINT command is aPostgreSQL language extension.