## E.186. Release 8.2.4

### Release Date

2007-04-23

This release contains a variety of fixes from 8.2.3, including a security fix. For information about new features in the 8.2 major release, see Section E.190, “Release 8.2”.

### E.186.1. Migration to Version 8.2.4

A dump/restore is not required for those running 8.2.X.

### E.186.2. Changes

- Support explicit placement of the temporary-table schema within `search_path`, and disable searching it for functions and operators (Tom)

  This is needed to allow a security-definer function to set a truly secure value of `search_path`. Without it, an unprivileged SQL user can use temporary objects to execute code with the privileges of the security-definer function (CVE-2007-2138). See `CREATE FUNCTION` for more information.

- Fix `shared_preload_libraries` for Windows by forcing reload in each backend (Korry Douglas)

- Fix `to_char()` so it properly upper/lower cases localized day or month names (Pavel Stehule)

- `/contrib/tsearch2` crash fixes (Teodor)

- Require `COMMIT PREPARED` to be executed in the same database as the transaction was prepared in (Heikki)

- Allow `pg_dump` to do binary backups larger than two gigabytes on Windows (Magnus)

- New traditional (Taiwan) Chinese FAQ (Zhou Daojing)

- Prevent the statistics collector from writing to disk too frequently (Tom)

- Fix potential-data-corruption bug in how `VACUUM FULL` handles `UPDATE` chains (Tom, Pavan Deolasee)

- Fix bug in domains that use array types (Tom)

- Fix `pg_dump` so it can dump a serial column's sequence using `-t` when not also dumping the owning table (Tom)

- Planner fixes, including improving outer join and bitmap scan selection logic (Tom)

- Fix possible wrong answers or crash when a PL/pgSQL function tries to `RETURN` from within an `EXCEPTION` block (Tom)

- Fix PANIC during enlargement of a hash index (Tom)

- Fix POSIX-style timezone specs to follow new USA DST rules (Tom)