无法增加 db_shared_buffers（总内存的0.1%）和 db_work_mem（总内存的0.03%）

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@pfaffman

指的是硬盘空间，而不是内存。

谢谢 @pfaffman - 我一开始也这么想，但后来我读了这个帖子：

PG throws could not resize shared memory segment error

After upgrading (with ‘launcher rebuild app’ times two) to Postgres 10, we’ve started seeing errors like this in /logs: Failed to handle exception in exception app middleware : PG::DiskFull: ERROR: could not resize shared memory segment "/PostgreSQL.682207201" to 283432 bytes: No space left on device : SELECT "topics"."id" AS t0_r0, "topics"."title" AS t0_r1, "topics"."last_posted_at" AS t0_r2, … Ideas? Looks like PG is unable to increase the size of a shared memory segment, can this be tuned …

还有很多可用空间