1CHECKPOINT(7)                    SQL Commands                    CHECKPOINT(7)
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NAME

6       CHECKPOINT - force a transaction log checkpoint
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SYNOPSIS

10       CHECKPOINT
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DESCRIPTION

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.
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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.
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25       Only superusers can call CHECKPOINT. The command is  not  intended  for
26       use during normal operation.
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COMPATIBILITY

29       The CHECKPOINT command is a PostgreSQL language extension.
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33SQL - Language Statements         2014-02-17                     CHECKPOINT(7)