Supported Versions: Current (17) / 16 / 15 / 14 / 13
Development Versions: devel
Unsupported versions: 12 / 11 / 10 / 9.6 / 9.5 / 9.4 / 9.3 / 9.2 / 9.1 / 9.0 / 8.4 / 8.3 / 8.2 / 8.1
This documentation is for an unsupported version of PostgreSQL.
You may want to view the same page for the current version, or one of the other supported versions listed above instead.

17.16. Short Options

For convenience there are also single letter command-line option switches available for some parameters. They are described in Table 17-1.

Table 17-1. Short option key

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
Notes:
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.