CHECKPOINT -- force a transaction log checkpoint
Write-Ahead Logging (WAL) puts a checkpoint in the transaction log
every so often. (To adjust the automatic checkpoint interval, see
configuration options CHECKPOINT_SEGMENTS
The CHECKPOINT command forces an immediate checkpoint
when the command is issued, without waiting for a scheduled 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. Refer to the
PostgreSQL Administrator's Guide for more
information about the WAL system.
Only superusers may call CHECKPOINT. The command is
not intended for use during normal operation.
PostgreSQL Administrator's Guide
The CHECKPOINT command is a
PostgreSQL language extension.
This file was copied from PostgreSQL 7.3.1 help system.