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E.25. Release 7.4.6

Release date: 2004-10-22

This release contains a variety of fixes from 7.4.5. For information about new features in the 7.4 major release, see Section E.31.

E.25.1. Migration to Version 7.4.6

A dump/restore is not required for those running 7.4.X.

E.25.2. Changes

  • Repair possible failure to update hint bits on disk

    Under rare circumstances this oversight could lead to "could not access transaction status" failures, which qualifies it as a potential-data-loss bug.

  • Ensure that hashed outer join does not miss tuples

    Very large left joins using a hash join plan could fail to output unmatched left-side rows given just the right data distribution.

  • Disallow running pg_ctl as root

    This is to guard against any possible security issues.

  • Avoid using temp files in /tmp in make_oidjoins_check

    This has been reported as a security issue, though it's hardly worthy of concern since there is no reason for non-developers to use this script anyway.

  • Prevent forced backend shutdown from re-emitting prior command result

    In rare cases, a client might think that its last command had succeeded when it really had been aborted by forced database shutdown.

  • Repair bug in pg_stat_get_backend_idset

    This could lead to misbehavior in some of the system-statistics views.

  • Fix small memory leak in postmaster

  • Fix "expected both swapped tables to have TOAST tables" bug

    This could arise in cases such as CLUSTER after ALTER TABLE DROP COLUMN.

  • Prevent pg_ctl restart from adding -D multiple times

  • Fix problem with NULL values in GiST indexes

  • :: is no longer interpreted as a variable in an ECPG prepare statement