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 disk. Refer to
Section 29.4, WAL Configuration, in the documentation
for more details about what happens during a checkpoint.
command forces an immediate checkpoint when the command is issued, without waiting for a regular checkpoint scheduled by the system (controlled by the settings in
Section 18.5.2, Checkpoints, in the documentation).
is not intended for use during normal operation.
If executed during recovery, the
command will force a restartpoint (see
Section 29.4, WAL Configuration, in the documentation) rather than writing a new checkpoint.
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