E.33.1. Migration to version 7.4.18

A dump/restore is not required for those running 7.4.X. However, if you are upgrading from a version earlier than 7.4.11, see the release notes for 7.4.11.

E.33.2. Changes

• Prevent index corruption when a transaction inserts rows and then aborts close to the end of a concurrent VACUUM on the same table (Tom)

• Make CREATE DOMAIN ... DEFAULT NULL work properly (Tom)

• Fix excessive logging of SSL error messages (Tom)

• Fix crash when log_min_error_statement logging runs out of memory (Tom)

• Prevent CLUSTER from failing due to attempting to process temporary tables of other sessions (Alvaro)

• Require non-superusers who use /contrib/dblink to use only password authentication, as a security measure (Joe)