数据库数据目录下 base 文件夹有很多 1GB 大小文件，占用几百 G 空间
xyjincan · 2023-01-11 13:18:07 +08:00 · 1583 次点击这是一个创建于 667 天前的主题，其中的信息可能已经有所发展或是发生改变。
怎么清零出空间呢，数据库表里面数据不多
建立了额外的四个表空间独立存储每月新增数据。
旧缓存数据定期删除。
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h0099 2023-01-11 13:44:57 +08:00  1
> 1GB 大小文件
这是 pgsql 的一个文件分片机制： https://www.postgresql.org/docs/current/storage-file-layout.html > When a table or index exceeds 1 GB, it is divided into gigabyte-sized segments. The first segment's file name is the same as the filenode; subsequent segments are named filenode.1, filenode.2, etc. This arrangement avoids problems on platforms that have file size limitations. (Actually, 1 GB is just the default segment size. The segment size can be adjusted using the configuration option --with-segsize when building PostgreSQL.) In principle, free space map and visibility map forks could require multiple segments as well, though this is unlikely to happen in practice. 根据 https://dba.stackexchange.com/questions/48273/whats-stored-in-data-dir-base-of-postgresql https://dba.stackexchange.com/questions/228114/why-is-my-postgres-base-directory-filling-up-rapidly 您有执行过[VACUUM]( https://www.postgresql.org/docs/current/routine-vacuuming.html#VACUUM-FOR-SPACE-RECOVERY)吗 |
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cstj0505 2023-01-11 15:29:29 +08:00
vacuum full xx 表
会锁表。 |
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ericFork 2023-01-13 02:09:41 +08:00
pg_repack 或者类似的工具了解一下
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