1 # -----------------------------
2 # PostgreSQL configuration file
3 # -----------------------------
5 # This file consists of lines of the form:
9 # (The "=" is optional.) Whitespace may be used. Comments are introduced with
10 # "#" anywhere on a line. The complete list of parameter names and allowed
11 # values can be found in the PostgreSQL documentation.
13 # The commented-out settings shown in this file represent the default values.
14 # Re-commenting a setting is NOT sufficient to revert it to the default value;
15 # you need to reload the server.
17 # This file is read on server startup and when the server receives a SIGHUP
18 # signal. If you edit the file on a running system, you have to SIGHUP the
19 # server for the changes to take effect, or use "pg_ctl reload". Some
20 # parameters, which are marked below, require a server shutdown and restart to
23 # Any parameter can also be given as a command-line option to the server, e.g.,
24 # "postgres -c log_connections=on". Some parameters can be changed at run time
25 # with the "SET" SQL command.
27 # Memory units: kB = kilobytes Time units: ms = milliseconds
28 # MB = megabytes s = seconds
29 # GB = gigabytes min = minutes
34 #------------------------------------------------------------------------------
36 #------------------------------------------------------------------------------
38 # The default values of these variables are driven from the -D command-line
39 # option or PGDATA environment variable, represented here as ConfigDir.
41 #data_directory = 'ConfigDir' # use data in another directory
42 # (change requires restart)
43 #hba_file = 'ConfigDir/pg_hba.conf' # host-based authentication file
44 # (change requires restart)
45 #ident_file = 'ConfigDir/pg_ident.conf' # ident configuration file
46 # (change requires restart)
48 # If external_pid_file is not explicitly set, no extra PID file is written.
49 #external_pid_file = '' # write an extra PID file
50 # (change requires restart)
53 #------------------------------------------------------------------------------
54 # CONNECTIONS AND AUTHENTICATION
55 #------------------------------------------------------------------------------
57 # - Connection Settings -
59 #listen_addresses = 'localhost' # what IP address(es) to listen on;
60 # comma-separated list of addresses;
61 # defaults to 'localhost'; use '*' for all
62 # (change requires restart)
63 #port = 5432 # (change requires restart)
64 #max_connections = 100 # (change requires restart)
65 # Note: Increasing max_connections costs ~400 bytes of shared memory per
66 # connection slot, plus lock space (see max_locks_per_transaction).
67 #superuser_reserved_connections = 3 # (change requires restart)
68 #unix_socket_directory = '' # (change requires restart)
69 #unix_socket_group = '' # (change requires restart)
70 #unix_socket_permissions = 0777 # begin with 0 to use octal notation
71 # (change requires restart)
72 #bonjour = off # advertise server via Bonjour
73 # (change requires restart)
74 #bonjour_name = '' # defaults to the computer name
75 # (change requires restart)
77 # - Security and Authentication -
79 #authentication_timeout = 1min # 1s-600s
80 #ssl = off # (change requires restart)
81 #ssl_ciphers = 'ALL:!ADH:!LOW:!EXP:!MD5:@STRENGTH' # allowed SSL ciphers
82 # (change requires restart)
83 #ssl_renegotiation_limit = 512MB # amount of data between renegotiations
84 #password_encryption = on
85 #db_user_namespace = off
88 #krb_server_keyfile = ''
89 #krb_srvname = 'postgres' # (Kerberos only)
90 #krb_caseins_users = off
93 # see "man 7 tcp" for details
95 #tcp_keepalives_idle = 0 # TCP_KEEPIDLE, in seconds;
96 # 0 selects the system default
97 #tcp_keepalives_interval = 0 # TCP_KEEPINTVL, in seconds;
98 # 0 selects the system default
99 #tcp_keepalives_count = 0 # TCP_KEEPCNT;
100 # 0 selects the system default
103 #------------------------------------------------------------------------------
104 # RESOURCE USAGE (except WAL)
105 #------------------------------------------------------------------------------
109 #shared_buffers = 32MB # min 128kB
110 # (change requires restart)
111 #temp_buffers = 8MB # min 800kB
112 #max_prepared_transactions = 0 # zero disables the feature
113 # (change requires restart)
114 # Note: Increasing max_prepared_transactions costs ~600 bytes of shared memory
115 # per transaction slot, plus lock space (see max_locks_per_transaction).
116 # It is not advisable to set max_prepared_transactions nonzero unless you
117 # actively intend to use prepared transactions.
118 #work_mem = 1MB # min 64kB
119 #maintenance_work_mem = 16MB # min 1MB
120 #max_stack_depth = 2MB # min 100kB
124 #temp_file_limit = -1 # limits per-session temp file space
125 # in kB, or -1 for no limit
127 # - Kernel Resource Usage -
129 #max_files_per_process = 1000 # min 25
130 # (change requires restart)
131 #shared_preload_libraries = '' # (change requires restart)
133 # - Cost-Based Vacuum Delay -
135 #vacuum_cost_delay = 0ms # 0-100 milliseconds
136 #vacuum_cost_page_hit = 1 # 0-10000 credits
137 #vacuum_cost_page_miss = 10 # 0-10000 credits
138 #vacuum_cost_page_dirty = 20 # 0-10000 credits
139 #vacuum_cost_limit = 200 # 1-10000 credits
141 # - Background Writer -
143 #bgwriter_delay = 200ms # 10-10000ms between rounds
144 #bgwriter_lru_maxpages = 100 # 0-1000 max buffers written/round
145 #bgwriter_lru_multiplier = 2.0 # 0-10.0 multipler on buffers scanned/round
147 # - Asynchronous Behavior -
149 #effective_io_concurrency = 1 # 1-1000. 0 disables prefetching
152 #------------------------------------------------------------------------------
154 #------------------------------------------------------------------------------
158 #wal_level = minimal # minimal, archive, or hot_standby
159 # (change requires restart)
160 #fsync = on # turns forced synchronization on or off
161 #synchronous_commit = on # synchronization level; on, off, or local
162 #wal_sync_method = fsync # the default is the first option
163 # supported by the operating system:
165 # fdatasync (default on Linux)
169 #full_page_writes = on # recover from partial page writes
170 #wal_buffers = -1 # min 32kB, -1 sets based on shared_buffers
171 # (change requires restart)
172 #wal_writer_delay = 200ms # 1-10000 milliseconds
174 #commit_delay = 0 # range 0-100000, in microseconds
175 #commit_siblings = 5 # range 1-1000
179 #checkpoint_segments = 3 # in logfile segments, min 1, 16MB each
180 #checkpoint_timeout = 5min # range 30s-1h
181 #checkpoint_completion_target = 0.5 # checkpoint target duration, 0.0 - 1.0
182 #checkpoint_warning = 30s # 0 disables
186 #archive_mode = off # allows archiving to be done
187 # (change requires restart)
188 #archive_command = '' # command to use to archive a logfile segment
189 # placeholders: %p = path of file to archive
190 # %f = file name only
191 # e.g. 'test ! -f /mnt/server/archivedir/%f && cp %p /mnt/server/archivedir/%f'
192 #archive_timeout = 0 # force a logfile segment switch after this
193 # number of seconds; 0 disables
196 #------------------------------------------------------------------------------
198 #------------------------------------------------------------------------------
200 # - Sending Server(s) -
202 # Set these on the master and on any standby that will send replication data
204 #max_wal_senders = 0 # max number of walsender processes
205 # (change requires restart)
206 #wal_keep_segments = 0 # in logfile segments, 16MB each; 0 disables
207 #replication_timeout = 60s # in milliseconds; 0 disables
211 # These settings are ignored on a standby server
213 #synchronous_standby_names = '' # standby servers that provide sync rep
214 # comma-separated list of application_name
215 # from standby(s); '*' = all
216 #vacuum_defer_cleanup_age = 0 # number of xacts by which cleanup is delayed
218 # - Standby Servers -
220 # These settings are ignored on a master server
222 #hot_standby = off # "on" allows queries during recovery
223 # (change requires restart)
224 #max_standby_archive_delay = 30s # max delay before canceling queries
225 # when reading WAL from archive;
226 # -1 allows indefinite delay
227 #max_standby_streaming_delay = 30s # max delay before canceling queries
228 # when reading streaming WAL;
229 # -1 allows indefinite delay
230 #wal_receiver_status_interval = 10s # send replies at least this often
232 #hot_standby_feedback = off # send info from standby to prevent
236 #------------------------------------------------------------------------------
238 #------------------------------------------------------------------------------
240 # - Planner Method Configuration -
242 #enable_bitmapscan = on
244 #enable_hashjoin = on
245 #enable_indexscan = on
246 #enable_indexonlyscan = on
247 #enable_material = on
248 #enable_mergejoin = on
249 #enable_nestloop = on
254 # - Planner Cost Constants -
256 #seq_page_cost = 1.0 # measured on an arbitrary scale
257 #random_page_cost = 4.0 # same scale as above
258 #cpu_tuple_cost = 0.01 # same scale as above
259 #cpu_index_tuple_cost = 0.005 # same scale as above
260 #cpu_operator_cost = 0.0025 # same scale as above
261 #effective_cache_size = 128MB
263 # - Genetic Query Optimizer -
267 #geqo_effort = 5 # range 1-10
268 #geqo_pool_size = 0 # selects default based on effort
269 #geqo_generations = 0 # selects default based on effort
270 #geqo_selection_bias = 2.0 # range 1.5-2.0
271 #geqo_seed = 0.0 # range 0.0-1.0
273 # - Other Planner Options -
275 #default_statistics_target = 100 # range 1-10000
276 #constraint_exclusion = partition # on, off, or partition
277 #cursor_tuple_fraction = 0.1 # range 0.0-1.0
278 #from_collapse_limit = 8
279 #join_collapse_limit = 8 # 1 disables collapsing of explicit
283 #------------------------------------------------------------------------------
284 # ERROR REPORTING AND LOGGING
285 #------------------------------------------------------------------------------
289 #log_destination = 'stderr' # Valid values are combinations of
290 # stderr, csvlog, syslog, and eventlog,
291 # depending on platform. csvlog
292 # requires logging_collector to be on.
294 # This is used when logging to stderr:
295 #logging_collector = off # Enable capturing of stderr and csvlog
296 # into log files. Required to be on for
298 # (change requires restart)
300 # These are only used if logging_collector is on:
301 #log_directory = 'pg_log' # directory where log files are written,
302 # can be absolute or relative to PGDATA
303 #log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log' # log file name pattern,
304 # can include strftime() escapes
305 #log_file_mode = 0600 # creation mode for log files,
306 # begin with 0 to use octal notation
307 #log_truncate_on_rotation = off # If on, an existing log file with the
308 # same name as the new log file will be
309 # truncated rather than appended to.
310 # But such truncation only occurs on
311 # time-driven rotation, not on restarts
312 # or size-driven rotation. Default is
313 # off, meaning append to existing files
315 #log_rotation_age = 1d # Automatic rotation of logfiles will
316 # happen after that time. 0 disables.
317 #log_rotation_size = 10MB # Automatic rotation of logfiles will
318 # happen after that much log output.
321 # These are relevant when logging to syslog:
322 #syslog_facility = 'LOCAL0'
323 #syslog_ident = 'postgres'
325 # This is only relevant when logging to eventlog (win32):
326 #event_source = 'PostgreSQL'
330 #client_min_messages = notice # values in order of decreasing detail:
341 #log_min_messages = warning # values in order of decreasing detail:
355 #log_min_error_statement = error # values in order of decreasing detail:
367 # panic (effectively off)
369 #log_min_duration_statement = -1 # -1 is disabled, 0 logs all statements
370 # and their durations, > 0 logs only
371 # statements running at least this number
377 #debug_print_parse = off
378 #debug_print_rewritten = off
379 #debug_print_plan = off
380 #debug_pretty_print = on
381 #log_checkpoints = off
382 #log_connections = off
383 #log_disconnections = off
385 #log_error_verbosity = default # terse, default, or verbose messages
387 #log_line_prefix = '' # special values:
388 # %a = application name
391 # %r = remote host and port
394 # %t = timestamp without milliseconds
395 # %m = timestamp with milliseconds
399 # %l = session line number
400 # %s = session start timestamp
401 # %v = virtual transaction ID
402 # %x = transaction ID (0 if none)
403 # %q = stop here in non-session
407 #log_lock_waits = off # log lock waits >= deadlock_timeout
408 #log_statement = 'none' # none, ddl, mod, all
409 #log_temp_files = -1 # log temporary files equal or larger
410 # than the specified size in kilobytes;
411 # -1 disables, 0 logs all temp files
412 #log_timezone = 'GMT'
415 #------------------------------------------------------------------------------
417 #------------------------------------------------------------------------------
419 # - Query/Index Statistics Collector -
421 #track_activities = on
423 #track_functions = none # none, pl, all
424 #track_activity_query_size = 1024 # (change requires restart)
425 #update_process_title = on
426 #stats_temp_directory = 'pg_stat_tmp'
429 # - Statistics Monitoring -
431 #log_parser_stats = off
432 #log_planner_stats = off
433 #log_executor_stats = off
434 #log_statement_stats = off
437 #------------------------------------------------------------------------------
438 # AUTOVACUUM PARAMETERS
439 #------------------------------------------------------------------------------
441 #autovacuum = on # Enable autovacuum subprocess? 'on'
442 # requires track_counts to also be on.
443 #log_autovacuum_min_duration = -1 # -1 disables, 0 logs all actions and
444 # their durations, > 0 logs only
445 # actions running at least this number
447 #autovacuum_max_workers = 3 # max number of autovacuum subprocesses
448 # (change requires restart)
449 #autovacuum_naptime = 1min # time between autovacuum runs
450 #autovacuum_vacuum_threshold = 50 # min number of row updates before
452 #autovacuum_analyze_threshold = 50 # min number of row updates before
454 #autovacuum_vacuum_scale_factor = 0.2 # fraction of table size before vacuum
455 #autovacuum_analyze_scale_factor = 0.1 # fraction of table size before analyze
456 #autovacuum_freeze_max_age = 200000000 # maximum XID age before forced vacuum
457 # (change requires restart)
458 #autovacuum_vacuum_cost_delay = 20ms # default vacuum cost delay for
459 # autovacuum, in milliseconds;
460 # -1 means use vacuum_cost_delay
461 #autovacuum_vacuum_cost_limit = -1 # default vacuum cost limit for
462 # autovacuum, -1 means use
466 #------------------------------------------------------------------------------
467 # CLIENT CONNECTION DEFAULTS
468 #------------------------------------------------------------------------------
470 # - Statement Behavior -
472 #search_path = '"$user",public' # schema names
473 #default_tablespace = '' # a tablespace name, '' uses the default
474 #temp_tablespaces = '' # a list of tablespace names, '' uses
475 # only default tablespace
476 #check_function_bodies = on
477 #default_transaction_isolation = 'read committed'
478 #default_transaction_read_only = off
479 #default_transaction_deferrable = off
480 #session_replication_role = 'origin'
481 #statement_timeout = 0 # in milliseconds, 0 is disabled
482 #vacuum_freeze_min_age = 50000000
483 #vacuum_freeze_table_age = 150000000
484 #bytea_output = 'hex' # hex, escape
485 #xmlbinary = 'base64'
486 #xmloption = 'content'
488 # - Locale and Formatting -
490 #datestyle = 'iso, mdy'
491 #intervalstyle = 'postgres'
493 #timezone_abbreviations = 'Default' # Select the set of available time zone
494 # abbreviations. Currently, there are
498 # You can create your own file in
499 # share/timezonesets/.
500 #extra_float_digits = 0 # min -15, max 3
501 #client_encoding = sql_ascii # actually, defaults to database
504 # These settings are initialized by initdb, but they can be changed.
505 #lc_messages = 'C' # locale for system error message
507 #lc_monetary = 'C' # locale for monetary formatting
508 #lc_numeric = 'C' # locale for number formatting
509 #lc_time = 'C' # locale for time formatting
511 # default configuration for text search
512 #default_text_search_config = 'pg_catalog.simple'
516 #dynamic_library_path = '$libdir'
517 #local_preload_libraries = ''
520 #------------------------------------------------------------------------------
522 #------------------------------------------------------------------------------
524 #deadlock_timeout = 1s
525 #max_locks_per_transaction = 64 # min 10
526 # (change requires restart)
527 # Note: Each lock table slot uses ~270 bytes of shared memory, and there are
528 # max_locks_per_transaction * (max_connections + max_prepared_transactions)
530 #max_pred_locks_per_transaction = 64 # min 10
531 # (change requires restart)
533 #------------------------------------------------------------------------------
534 # VERSION/PLATFORM COMPATIBILITY
535 #------------------------------------------------------------------------------
537 # - Previous PostgreSQL Versions -
540 #backslash_quote = safe_encoding # on, off, or safe_encoding
541 #default_with_oids = off
542 #escape_string_warning = on
543 #lo_compat_privileges = off
544 #quote_all_identifiers = off
545 #sql_inheritance = on
546 #standard_conforming_strings = on
547 #synchronize_seqscans = on
549 # - Other Platforms and Clients -
551 #transform_null_equals = off
554 #------------------------------------------------------------------------------
556 #------------------------------------------------------------------------------
558 #exit_on_error = off # terminate session on any error?
559 #restart_after_crash = on # reinitialize after backend crash?
562 #------------------------------------------------------------------------------
564 #------------------------------------------------------------------------------
566 # Add settings for extensions here