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CHECKPOINT.7
'\" t .\" Title: CHECKPOINT .\" Author: The PostgreSQL Global Development Group .\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> .\" Date: 2023 .\" Manual: PostgreSQL 13.13 Documentation .\" Source: PostgreSQL 13.13 .\" Language: English .\" .TH "CHECKPOINT" "7" "2023" "PostgreSQL 13.13" "PostgreSQL 13.13 Documentation" .\" ----------------------------------------------------------------- .\" * Define some portability stuff .\" ----------------------------------------------------------------- .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .\" http://bugs.debian.org/507673 .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" ----------------------------------------------------------------- .\" * set default formatting .\" ----------------------------------------------------------------- .\" disable hyphenation .nh .\" disable justification (adjust text to left margin only) .ad l .\" ----------------------------------------------------------------- .\" * MAIN CONTENT STARTS HERE * .\" ----------------------------------------------------------------- .SH "NAME" CHECKPOINT \- force a write\-ahead log checkpoint .SH "SYNOPSIS" .sp .nf CHECKPOINT .fi .SH "DESCRIPTION" .PP 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\ \&29.4 for more details about what happens during a checkpoint\&. .PP The \fBCHECKPOINT\fR 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)\&. \fBCHECKPOINT\fR is not intended for use during normal operation\&. .PP If executed during recovery, the \fBCHECKPOINT\fR command will force a restartpoint (see Section\ \&29.4) rather than writing a new checkpoint\&. .PP Only superusers can call \fBCHECKPOINT\fR\&. .SH "COMPATIBILITY" .PP The \fBCHECKPOINT\fR command is a PostgreSQL language extension\&.