CHECKPOINT — force a write-ahead log checkpoint
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 to Section 30.4 for more details about what happens during a checkpoint.
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 19.5.2).
CHECKPOINT is not intended for use
during normal operation.
If executed during recovery, the
CHECKPOINT command will force a restartpoint
(see Section 30.4) rather
than writing a new checkpoint.
Only superusers can call
CHECKPOINT command is a
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