Re: PG 17 and GUC variables

On Thu, Jun 20, 2024 at 08:01:19PM -0400, Bruce Momjian wrote:
> FYI, looking at the release notes, I see 15 GUC variables added in this
> release, and two removed.  That 15 number seemed unusually high so I
> thought I would report it.

Scanning pg_settings across the two versions, I'm seeing:
- Removed GUCs between 16 and 17:
db_user_namespace
old_snapshot_threshold
trace_recovery_messages

- Added GUCs between 16 and 17:
allow_alter_system
commit_timestamp_buffers
enable_group_by_reordering
event_triggers
huge_pages_status
io_combine_limit
max_notify_queue_pages
multixact_member_buffers
multixact_offset_buffers
notify_buffers
serializable_buffers
standby_slot_names
subtransaction_buffers
summarize_wal
sync_replication_slots
trace_connection_negotiation
transaction_buffers
transaction_timeout
wal_summary_keep_time

So that makes for 3 removed, 19 additions and a +16.
--
Michael