小编kis*_*rgy的帖子

我使用的软件，这使得一个很大的PostgreSQL数据库（有一个表中有一个百万行）和开发商说我应该VACUUM和ANALYZE周期性。但是 PostgreSQL 数据库默认是autovacuum开启的。

我应该抽真空/分析吗？有什么好处？自动抽真空和手动抽真空有什么区别

例如，在 Pgadmin3 中，我有这个：

I'm running out of space from my hard drive which has a 18GB PostgreSQL database.
When I try pg_dump to a different drive, PostgreSQL creates temporary files on the disk it's dumping from, so I run out of space and the dump fails.

I tried this from Stackoverflow and a small file is created in the new directory, but nothing else, and pg_dump still writes to the original disk.

How do I change temp directory for pg_dump?

Note: My …