CHECKPOINT
force a write-ahead log checkpoint
English manual coverage begins with PostgreSQL 6.4. Source history and runtime observations have their own recorded version boundaries.
Reading PG 18·Select a recorded version
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- CHECKPOINT
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- force a write-ahead log checkpoint
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- 强制执行一次预写式日志检查点
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Syntax
CHECKPOINTSyntax diagrams
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Definition PG 18
CHECKPOINT
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.
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Source references
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Definition sources
center · PostgreSQL 18 · wiki-repair-20261023:67e942d65ffa35de116fb3f21a686072589e8a0263ff927c422e59eac8e4565e
Text language: en · wiki-repair-20261023:67e942d65ffa35de116fb3f21a686072589e8a0263ff927c422e59eac8e4565e