SQL Commands / Maintenance
CHECKPOINT
Read the PG 18 manualforce a write-ahead log checkpoint
Reading PG 18current·documented in 27 of 30 versions, 7.1 to 20
Syntax
CHECKPOINT
Syntax diagrams
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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 to Section 28.5 for more details about what happens during a checkpoint.
The 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 28.5) rather than writing a new checkpoint.
Only superusers or users with the privileges of the pg_checkpoint role can call CHECKPOINT.
Compatibility
The CHECKPOINT command is a PostgreSQL language extension.
Version history 16
Definition snapshot: b7bd9cda · English manual source