1CHECKPOINT() SQL Commands CHECKPOINT()
2
3
4
6 CHECKPOINT - force a transaction log checkpoint
7
8
10 CHECKPOINT
11
12
14 Write-Ahead Logging (WAL) puts a checkpoint in the transaction log
15 every so often. (To adjust the automatic checkpoint interval, see the
16 run-time configuration options checkpoint_segments and checkpoint_time‐
17 out.) The CHECKPOINT command forces an immediate checkpoint when the
18 command is issued, without waiting for a scheduled checkpoint.
19
20 A checkpoint is a point in the transaction log sequence at which all
21 data files have been updated to reflect the information in the log. All
22 data files will be flushed to disk. Refer to in the documentation for
23 more information about the WAL system.
24
25 Only superusers may call CHECKPOINT. The command is not intended for
26 use during normal operation.
27
29 The CHECKPOINT command is a PostgreSQL language extension.
30
31
32
33SQL - Language Statements 2008-06-08 CHECKPOINT()