temp_buffers
Sets the maximum amount of memory used for temporary buffers within each database session. These are session-local buffers used only for access to temporary tables. If this value is specified without units, it is taken as blocks, that is BLCKSZ bytes, typically 8kB. The default is eight megabytes (8MB). (If BLCKSZ is not 8kB, the default value scales proportionally to it.) This setting can be changed within individual sessions, but only before the first use of temporary tables within the session; subsequent attempts to change the value will have no effect on that session. A session will allocate temporary buffers as needed up to the limit given by temp_buffers. The cost of setting a large value in sessions that do not actually need many temporary buffers is only a buffer descriptor, or about 64 bytes, per increment in temp_buffers. However if a buffer is actually used an additional 8192 bytes will be consumed for it (or in general, BLCKSZ bytes).
英文手册覆盖始于 PostgreSQL 7.4. 来源历史与运行验证各自保留独立版本边界。
当前阅读 PG 18·选择有来源记录的版本
此版本暂无所选语言的定义，以下显示原始英文内容。
- boot val
- 1024
- category
- Resource Usage / Memory
- context
- user
- documented
- true
- enumvals
- 未知
- extra desc
- 未知
- lang
- en
- max val
- 1073741823
- metadata version
- 18
- min val
- 100
- name
- temp_buffers
- short desc
- Sets the maximum number of temporary buffers used by each session.
- source
- pg-settings-source-snapshot
- unit
- 8kB
- vartype
- integer
版本定义 PG 18
Sets the maximum amount of memory used for temporary buffers within each database session. These are session-local buffers used only for access to temporary tables. If this value is specified without units, it is taken as blocks, that is BLCKSZ bytes, typically 8kB. The default is eight megabytes (8MB). (If BLCKSZ is not 8kB, the default value scales proportionally to it.) This setting can be changed within individual sessions, but only before the first use of temporary tables within the session; subsequent attempts to change the value will have no effect on that session. A session will allocate temporary buffers as needed up to the limit given by temp_buffers. The cost of setting a large value in sessions that do not actually need many temporary buffers is only a buffer descriptor, or about 64 bytes, per increment in temp_buffers. However if a buffer is actually used an additional 8192 bytes will be consumed for it (or in general, BLCKSZ bytes).
比较版本
来源引用
定义来源
center · PostgreSQL 18 · english-manuals:91457c118d2c7ec82e5c7c1879a3fba02bfc2146178502f0a415afda6f3dfe27
正文语言: en · english-manuals:91457c118d2c7ec82e5c7c1879a3fba02bfc2146178502f0a415afda6f3dfe27