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Specifically for PostgreSQL version 12

1 vote
3 answers
1k views

Postgres 12 drastically slower than postgres 9.5 with identical queries from import/export

I setup a new postgres database (v12) by export/importing from an old one (v9.5). When I query the new one, it's drastically slower despite being on a more powerful machine. Shared buffers are set to …
Caleb Pitman's user avatar
1 vote
Accepted

Postgres 12 drastically slower than postgres 9.5 with identical queries from import/export

The main issue was the database needed to have VACUUM run on it. I'm surprised that a full database export/import wouldn't just automatically do it considering the performance gain was 100x faster. R …
Caleb Pitman's user avatar