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Forces a transaction log checkpoint.
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.
The CHECKPOINT command forces an immediate checkpoint when the command is issued, without waiting for a regular checkpoint scheduled by the system. CHECKPOINT is not intended for use during normal operation.
If executed during recovery, the CHECKPOINT command will force a restartpoint rather than writing a new checkpoint.
Only superusers may call CHECKPOINT.
The CHECKPOINT command is a Greenplum Database extension.