Short option

Equivalent

-B x

shared_buffers = x

-d x

log_min_messages = DEBUGx

-F

fsync = off

-h x

listen_addresses = x

-i

listen_addresses = '*'

-k x

unix_socket_directory = x

-l

ssl = on

-N x

max_connections = x

-p x

port = x

-fb, -fh, -fi, -fm, -fn, -fs, -ft[a]

enable_bitmapscan = off, enable_hashjoin = off, enable_indexscan = off, enable_mergejoin = off, enable_nestloop = off, enable_seqscan = off, enable_tidscan = off

-s[a]

log_statement_stats = on

-S x[a]

work_mem = x

-tpa, -tpl, -te[a]

log_parser_stats = on, log_planner_stats = on, log_executor_stats = on

[

a

]

For historical reasons, these options must be passed to the individual server process via the -o postmaster option, for example,

$ postmaster -o '-S 1024 -s'

or via PGOPTIONS from the client side, as explained above.