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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.

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