· 4 years ago · Aug 10, 2021, 01:10 PM
1# -----------------------------
2# PostgreSQL configuration file
3# -----------------------------
4#
5# This file consists of lines of the form:
6#
7# name = value
8#
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.
12#
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.
16#
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, run "pg_ctl reload", or execute
20# "SELECT pg_reload_conf()". Some parameters, which are marked below,
21# require a server shutdown and restart to take effect.
22#
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.
26#
27# Memory units: kB = kilobytes Time units: ms = milliseconds
28# MB = megabytes s = seconds
29# GB = gigabytes min = minutes
30# TB = terabytes h = hours
31# d = days
32
33
34#------------------------------------------------------------------------------
35# FILE LOCATIONS
36#------------------------------------------------------------------------------
37
38# The default values of these variables are driven from the -D command-line
39# option or PGDATA environment variable, represented here as ConfigDir.
40
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)
47
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)
51
52
53#------------------------------------------------------------------------------
54# CONNECTIONS AND AUTHENTICATION
55#------------------------------------------------------------------------------
56
57# - Connection Settings -
58
59listen_addresses = '*'
60 # comma-separated list of addresses;
61 # defaults to 'localhost'; use '*' for all
62 # (change requires restart)
63#port = 5432 # (change requires restart)
64max_connections = 100 # (change requires restart)
65#superuser_reserved_connections = 3 # (change requires restart)
66#unix_socket_directories = '/var/run/postgresql' # comma-separated list of directories
67 # (change requires restart)
68#unix_socket_group = '' # (change requires restart)
69#unix_socket_permissions = 0777 # begin with 0 to use octal notation
70 # (change requires restart)
71#bonjour = off # advertise server via Bonjour
72 # (change requires restart)
73#bonjour_name = '' # defaults to the computer name
74 # (change requires restart)
75
76# - TCP settings -
77# see "man 7 tcp" for details
78
79#tcp_keepalives_idle = 0 # TCP_KEEPIDLE, in seconds;
80 # 0 selects the system default
81#tcp_keepalives_interval = 0 # TCP_KEEPINTVL, in seconds;
82 # 0 selects the system default
83#tcp_keepalives_count = 0 # TCP_KEEPCNT;
84 # 0 selects the system default
85#tcp_user_timeout = 0 # TCP_USER_TIMEOUT, in milliseconds;
86 # 0 selects the system default
87
88# - Authentication -
89
90#authentication_timeout = 1min # 1s-600s
91#password_encryption = md5 # md5 or scram-sha-256
92#db_user_namespace = off
93
94# GSSAPI using Kerberos
95#krb_server_keyfile = ''
96#krb_caseins_users = off
97
98# - SSL -
99
100#ssl = off
101#ssl_ca_file = ''
102#ssl_cert_file = 'server.crt'
103#ssl_crl_file = ''
104#ssl_key_file = 'server.key'
105#ssl_ciphers = 'HIGH:MEDIUM:+3DES:!aNULL' # allowed SSL ciphers
106#ssl_prefer_server_ciphers = on
107#ssl_ecdh_curve = 'prime256v1'
108#ssl_min_protocol_version = 'TLSv1'
109#ssl_max_protocol_version = ''
110#ssl_dh_params_file = ''
111#ssl_passphrase_command = ''
112#ssl_passphrase_command_supports_reload = off
113
114
115#------------------------------------------------------------------------------
116# RESOURCE USAGE (except WAL)
117#------------------------------------------------------------------------------
118
119# - Memory -
120
121shared_buffers = 128MB # min 128kB
122 # (change requires restart)
123#huge_pages = try # on, off, or try
124 # (change requires restart)
125#temp_buffers = 8MB # min 800kB
126#max_prepared_transactions = 0 # zero disables the feature
127 # (change requires restart)
128# Caution: it is not advisable to set max_prepared_transactions nonzero unless
129# you actively intend to use prepared transactions.
130#work_mem = 4MB # min 64kB
131#maintenance_work_mem = 64MB # min 1MB
132#autovacuum_work_mem = -1 # min 1MB, or -1 to use maintenance_work_mem
133#max_stack_depth = 2MB # min 100kB
134#shared_memory_type = mmap # the default is the first option
135 # supported by the operating system:
136 # mmap
137 # sysv
138 # windows
139 # (change requires restart)
140dynamic_shared_memory_type = posix # the default is the first option
141 # supported by the operating system:
142 # posix
143 # sysv
144 # windows
145 # mmap
146 # (change requires restart)
147
148# - Disk -
149
150#temp_file_limit = -1 # limits per-process temp file space
151 # in kB, or -1 for no limit
152
153# - Kernel Resources -
154
155#max_files_per_process = 1000 # min 25
156 # (change requires restart)
157
158# - Cost-Based Vacuum Delay -
159
160#vacuum_cost_delay = 0 # 0-100 milliseconds (0 disables)
161#vacuum_cost_page_hit = 1 # 0-10000 credits
162#vacuum_cost_page_miss = 10 # 0-10000 credits
163#vacuum_cost_page_dirty = 20 # 0-10000 credits
164#vacuum_cost_limit = 200 # 1-10000 credits
165
166# - Background Writer -
167
168#bgwriter_delay = 200ms # 10-10000ms between rounds
169#bgwriter_lru_maxpages = 100 # max buffers written/round, 0 disables
170#bgwriter_lru_multiplier = 2.0 # 0-10.0 multiplier on buffers scanned/round
171#bgwriter_flush_after = 512kB # measured in pages, 0 disables
172
173# - Asynchronous Behavior -
174
175#effective_io_concurrency = 1 # 1-1000; 0 disables prefetching
176#max_worker_processes = 8 # (change requires restart)
177#max_parallel_maintenance_workers = 2 # taken from max_parallel_workers
178#max_parallel_workers_per_gather = 2 # taken from max_parallel_workers
179#parallel_leader_participation = on
180#max_parallel_workers = 8 # maximum number of max_worker_processes that
181 # can be used in parallel operations
182#old_snapshot_threshold = -1 # 1min-60d; -1 disables; 0 is immediate
183 # (change requires restart)
184#backend_flush_after = 0 # measured in pages, 0 disables
185
186
187#------------------------------------------------------------------------------
188# WRITE-AHEAD LOG
189#------------------------------------------------------------------------------
190
191# - Settings -
192
193#wal_level = replica # minimal, replica, or logical
194 # (change requires restart)
195#fsync = on # flush data to disk for crash safety
196 # (turning this off can cause
197 # unrecoverable data corruption)
198#synchronous_commit = on # synchronization level;
199 # off, local, remote_write, remote_apply, or on
200#wal_sync_method = fsync # the default is the first option
201 # supported by the operating system:
202 # open_datasync
203 # fdatasync (default on Linux)
204 # fsync
205 # fsync_writethrough
206 # open_sync
207#full_page_writes = on # recover from partial page writes
208#wal_compression = off # enable compression of full-page writes
209#wal_log_hints = off # also do full page writes of non-critical updates
210 # (change requires restart)
211#wal_init_zero = on # zero-fill new WAL files
212#wal_recycle = on # recycle WAL files
213#wal_buffers = -1 # min 32kB, -1 sets based on shared_buffers
214 # (change requires restart)
215#wal_writer_delay = 200ms # 1-10000 milliseconds
216#wal_writer_flush_after = 1MB # measured in pages, 0 disables
217
218#commit_delay = 0 # range 0-100000, in microseconds
219#commit_siblings = 5 # range 1-1000
220
221# - Checkpoints -
222
223#checkpoint_timeout = 5min # range 30s-1d
224max_wal_size = 1GB
225min_wal_size = 80MB
226#checkpoint_completion_target = 0.5 # checkpoint target duration, 0.0 - 1.0
227#checkpoint_flush_after = 256kB # measured in pages, 0 disables
228#checkpoint_warning = 30s # 0 disables
229
230# - Archiving -
231
232#archive_mode = off # enables archiving; off, on, or always
233 # (change requires restart)
234#archive_command = '' # command to use to archive a logfile segment
235 # placeholders: %p = path of file to archive
236 # %f = file name only
237 # e.g. 'test ! -f /mnt/server/archivedir/%f && cp %p /mnt/server/archivedir/%f'
238#archive_timeout = 0 # force a logfile segment switch after this
239 # number of seconds; 0 disables
240
241# - Archive Recovery -
242
243# These are only used in recovery mode.
244
245#restore_command = '' # command to use to restore an archived logfile segment
246 # placeholders: %p = path of file to restore
247 # %f = file name only
248 # e.g. 'cp /mnt/server/archivedir/%f %p'
249 # (change requires restart)
250#archive_cleanup_command = '' # command to execute at every restartpoint
251#recovery_end_command = '' # command to execute at completion of recovery
252
253# - Recovery Target -
254
255# Set these only when performing a targeted recovery.
256
257#recovery_target = '' # 'immediate' to end recovery as soon as a
258 # consistent state is reached
259 # (change requires restart)
260#recovery_target_name = '' # the named restore point to which recovery will proceed
261 # (change requires restart)
262#recovery_target_time = '' # the time stamp up to which recovery will proceed
263 # (change requires restart)
264#recovery_target_xid = '' # the transaction ID up to which recovery will proceed
265 # (change requires restart)
266#recovery_target_lsn = '' # the WAL LSN up to which recovery will proceed
267 # (change requires restart)
268#recovery_target_inclusive = on # Specifies whether to stop:
269 # just after the specified recovery target (on)
270 # just before the recovery target (off)
271 # (change requires restart)
272#recovery_target_timeline = 'latest' # 'current', 'latest', or timeline ID
273 # (change requires restart)
274#recovery_target_action = 'pause' # 'pause', 'promote', 'shutdown'
275 # (change requires restart)
276
277
278#------------------------------------------------------------------------------
279# REPLICATION
280#------------------------------------------------------------------------------
281
282# - Sending Servers -
283
284# Set these on the master and on any standby that will send replication data.
285
286#max_wal_senders = 10 # max number of walsender processes
287 # (change requires restart)
288#wal_keep_segments = 0 # in logfile segments; 0 disables
289#wal_sender_timeout = 60s # in milliseconds; 0 disables
290
291#max_replication_slots = 10 # max number of replication slots
292 # (change requires restart)
293#track_commit_timestamp = off # collect timestamp of transaction commit
294 # (change requires restart)
295
296# - Master Server -
297
298# These settings are ignored on a standby server.
299
300#synchronous_standby_names = '' # standby servers that provide sync rep
301 # method to choose sync standbys, number of sync standbys,
302 # and comma-separated list of application_name
303 # from standby(s); '*' = all
304#vacuum_defer_cleanup_age = 0 # number of xacts by which cleanup is delayed
305
306# - Standby Servers -
307
308# These settings are ignored on a master server.
309
310#primary_conninfo = '' # connection string to sending server
311 # (change requires restart)
312#primary_slot_name = '' # replication slot on sending server
313 # (change requires restart)
314#promote_trigger_file = '' # file name whose presence ends recovery
315#hot_standby = on # "off" disallows queries during recovery
316 # (change requires restart)
317#max_standby_archive_delay = 30s # max delay before canceling queries
318 # when reading WAL from archive;
319 # -1 allows indefinite delay
320#max_standby_streaming_delay = 30s # max delay before canceling queries
321 # when reading streaming WAL;
322 # -1 allows indefinite delay
323#wal_receiver_status_interval = 10s # send replies at least this often
324 # 0 disables
325#hot_standby_feedback = off # send info from standby to prevent
326 # query conflicts
327#wal_receiver_timeout = 60s # time that receiver waits for
328 # communication from master
329 # in milliseconds; 0 disables
330#wal_retrieve_retry_interval = 5s # time to wait before retrying to
331 # retrieve WAL after a failed attempt
332#recovery_min_apply_delay = 0 # minimum delay for applying changes during recovery
333
334# - Subscribers -
335
336# These settings are ignored on a publisher.
337
338#max_logical_replication_workers = 4 # taken from max_worker_processes
339 # (change requires restart)
340#max_sync_workers_per_subscription = 2 # taken from max_logical_replication_workers
341
342
343#------------------------------------------------------------------------------
344# QUERY TUNING
345#------------------------------------------------------------------------------
346
347# - Planner Method Configuration -
348
349#enable_bitmapscan = on
350#enable_hashagg = on
351#enable_hashjoin = on
352#enable_indexscan = on
353#enable_indexonlyscan = on
354#enable_material = on
355#enable_mergejoin = on
356#enable_nestloop = on
357#enable_parallel_append = on
358#enable_seqscan = on
359#enable_sort = on
360#enable_tidscan = on
361#enable_partitionwise_join = off
362#enable_partitionwise_aggregate = off
363#enable_parallel_hash = on
364#enable_partition_pruning = on
365
366# - Planner Cost Constants -
367
368#seq_page_cost = 1.0 # measured on an arbitrary scale
369#random_page_cost = 4.0 # same scale as above
370#cpu_tuple_cost = 0.01 # same scale as above
371#cpu_index_tuple_cost = 0.005 # same scale as above
372#cpu_operator_cost = 0.0025 # same scale as above
373#parallel_tuple_cost = 0.1 # same scale as above
374#parallel_setup_cost = 1000.0 # same scale as above
375
376#jit_above_cost = 100000 # perform JIT compilation if available
377 # and query more expensive than this;
378 # -1 disables
379#jit_inline_above_cost = 500000 # inline small functions if query is
380 # more expensive than this; -1 disables
381#jit_optimize_above_cost = 500000 # use expensive JIT optimizations if
382 # query is more expensive than this;
383 # -1 disables
384
385#min_parallel_table_scan_size = 8MB
386#min_parallel_index_scan_size = 512kB
387#effective_cache_size = 4GB
388
389# - Genetic Query Optimizer -
390
391#geqo = on
392#geqo_threshold = 12
393#geqo_effort = 5 # range 1-10
394#geqo_pool_size = 0 # selects default based on effort
395#geqo_generations = 0 # selects default based on effort
396#geqo_selection_bias = 2.0 # range 1.5-2.0
397#geqo_seed = 0.0 # range 0.0-1.0
398
399# - Other Planner Options -
400
401#default_statistics_target = 100 # range 1-10000
402#constraint_exclusion = partition # on, off, or partition
403#cursor_tuple_fraction = 0.1 # range 0.0-1.0
404#from_collapse_limit = 8
405#join_collapse_limit = 8 # 1 disables collapsing of explicit
406 # JOIN clauses
407#force_parallel_mode = off
408#jit = on # allow JIT compilation
409#plan_cache_mode = auto # auto, force_generic_plan or
410 # force_custom_plan
411
412
413#------------------------------------------------------------------------------
414# REPORTING AND LOGGING
415#------------------------------------------------------------------------------
416
417# - Where to Log -
418
419#log_destination = 'stderr' # Valid values are combinations of
420 # stderr, csvlog, syslog, and eventlog,
421 # depending on platform. csvlog
422 # requires logging_collector to be on.
423
424# This is used when logging to stderr:
425#logging_collector = off # Enable capturing of stderr and csvlog
426 # into log files. Required to be on for
427 # csvlogs.
428 # (change requires restart)
429
430# These are only used if logging_collector is on:
431#log_directory = 'log' # directory where log files are written,
432 # can be absolute or relative to PGDATA
433#log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log' # log file name pattern,
434 # can include strftime() escapes
435#log_file_mode = 0600 # creation mode for log files,
436 # begin with 0 to use octal notation
437#log_truncate_on_rotation = off # If on, an existing log file with the
438 # same name as the new log file will be
439 # truncated rather than appended to.
440 # But such truncation only occurs on
441 # time-driven rotation, not on restarts
442 # or size-driven rotation. Default is
443 # off, meaning append to existing files
444 # in all cases.
445#log_rotation_age = 1d # Automatic rotation of logfiles will
446 # happen after that time. 0 disables.
447#log_rotation_size = 10MB # Automatic rotation of logfiles will
448 # happen after that much log output.
449 # 0 disables.
450
451# These are relevant when logging to syslog:
452#syslog_facility = 'LOCAL0'
453#syslog_ident = 'postgres'
454#syslog_sequence_numbers = on
455#syslog_split_messages = on
456
457# This is only relevant when logging to eventlog (win32):
458# (change requires restart)
459#event_source = 'PostgreSQL'
460
461# - When to Log -
462
463#log_min_messages = warning # values in order of decreasing detail:
464 # debug5
465 # debug4
466 # debug3
467 # debug2
468 # debug1
469 # info
470 # notice
471 # warning
472 # error
473 # log
474 # fatal
475 # panic
476
477#log_min_error_statement = error # values in order of decreasing detail:
478 # debug5
479 # debug4
480 # debug3
481 # debug2
482 # debug1
483 # info
484 # notice
485 # warning
486 # error
487 # log
488 # fatal
489 # panic (effectively off)
490
491#log_min_duration_statement = -1 # -1 is disabled, 0 logs all statements
492 # and their durations, > 0 logs only
493 # statements running at least this number
494 # of milliseconds
495
496#log_transaction_sample_rate = 0.0 # Fraction of transactions whose statements
497 # are logged regardless of their duration. 1.0 logs all
498 # statements from all transactions, 0.0 never logs.
499
500# - What to Log -
501
502#debug_print_parse = off
503#debug_print_rewritten = off
504#debug_print_plan = off
505#debug_pretty_print = on
506#log_checkpoints = off
507#log_connections = off
508#log_disconnections = off
509#log_duration = off
510#log_error_verbosity = default # terse, default, or verbose messages
511#log_hostname = off
512#log_line_prefix = '%m [%p] ' # special values:
513 # %a = application name
514 # %u = user name
515 # %d = database name
516 # %r = remote host and port
517 # %h = remote host
518 # %p = process ID
519 # %t = timestamp without milliseconds
520 # %m = timestamp with milliseconds
521 # %n = timestamp with milliseconds (as a Unix epoch)
522 # %i = command tag
523 # %e = SQL state
524 # %c = session ID
525 # %l = session line number
526 # %s = session start timestamp
527 # %v = virtual transaction ID
528 # %x = transaction ID (0 if none)
529 # %q = stop here in non-session
530 # processes
531 # %% = '%'
532 # e.g. '<%u%%%d> '
533#log_lock_waits = off # log lock waits >= deadlock_timeout
534#log_statement = 'none' # none, ddl, mod, all
535#log_replication_commands = off
536#log_temp_files = -1 # log temporary files equal or larger
537 # than the specified size in kilobytes;
538 # -1 disables, 0 logs all temp files
539log_timezone = 'UTC'
540
541#------------------------------------------------------------------------------
542# PROCESS TITLE
543#------------------------------------------------------------------------------
544
545#cluster_name = '' # added to process titles if nonempty
546 # (change requires restart)
547#update_process_title = on
548
549
550#------------------------------------------------------------------------------
551# STATISTICS
552#------------------------------------------------------------------------------
553
554# - Query and Index Statistics Collector -
555
556#track_activities = on
557#track_counts = on
558#track_io_timing = off
559#track_functions = none # none, pl, all
560#track_activity_query_size = 1024 # (change requires restart)
561#stats_temp_directory = 'pg_stat_tmp'
562
563
564# - Monitoring -
565
566#log_parser_stats = off
567#log_planner_stats = off
568#log_executor_stats = off
569#log_statement_stats = off
570
571
572#------------------------------------------------------------------------------
573# AUTOVACUUM
574#------------------------------------------------------------------------------
575
576#autovacuum = on # Enable autovacuum subprocess? 'on'
577 # requires track_counts to also be on.
578#log_autovacuum_min_duration = -1 # -1 disables, 0 logs all actions and
579 # their durations, > 0 logs only
580 # actions running at least this number
581 # of milliseconds.
582#autovacuum_max_workers = 3 # max number of autovacuum subprocesses
583 # (change requires restart)
584#autovacuum_naptime = 1min # time between autovacuum runs
585#autovacuum_vacuum_threshold = 50 # min number of row updates before
586 # vacuum
587#autovacuum_analyze_threshold = 50 # min number of row updates before
588 # analyze
589#autovacuum_vacuum_scale_factor = 0.2 # fraction of table size before vacuum
590#autovacuum_analyze_scale_factor = 0.1 # fraction of table size before analyze
591#autovacuum_freeze_max_age = 200000000 # maximum XID age before forced vacuum
592 # (change requires restart)
593#autovacuum_multixact_freeze_max_age = 400000000 # maximum multixact age
594 # before forced vacuum
595 # (change requires restart)
596#autovacuum_vacuum_cost_delay = 2ms # default vacuum cost delay for
597 # autovacuum, in milliseconds;
598 # -1 means use vacuum_cost_delay
599#autovacuum_vacuum_cost_limit = -1 # default vacuum cost limit for
600 # autovacuum, -1 means use
601 # vacuum_cost_limit
602
603
604#------------------------------------------------------------------------------
605# CLIENT CONNECTION DEFAULTS
606#------------------------------------------------------------------------------
607
608# - Statement Behavior -
609
610#client_min_messages = notice # values in order of decreasing detail:
611 # debug5
612 # debug4
613 # debug3
614 # debug2
615 # debug1
616 # log
617 # notice
618 # warning
619 # error
620#search_path = '"$user", public' # schema names
621#row_security = on
622#default_tablespace = '' # a tablespace name, '' uses the default
623#temp_tablespaces = '' # a list of tablespace names, '' uses
624 # only default tablespace
625#default_table_access_method = 'heap'
626#check_function_bodies = on
627#default_transaction_isolation = 'read committed'
628#default_transaction_read_only = off
629#default_transaction_deferrable = off
630#session_replication_role = 'origin'
631#statement_timeout = 0 # in milliseconds, 0 is disabled
632#lock_timeout = 0 # in milliseconds, 0 is disabled
633#idle_in_transaction_session_timeout = 0 # in milliseconds, 0 is disabled
634#vacuum_freeze_min_age = 50000000
635#vacuum_freeze_table_age = 150000000
636#vacuum_multixact_freeze_min_age = 5000000
637#vacuum_multixact_freeze_table_age = 150000000
638#vacuum_cleanup_index_scale_factor = 0.1 # fraction of total number of tuples
639 # before index cleanup, 0 always performs
640 # index cleanup
641#bytea_output = 'hex' # hex, escape
642#xmlbinary = 'base64'
643#xmloption = 'content'
644#gin_fuzzy_search_limit = 0
645#gin_pending_list_limit = 4MB
646
647# - Locale and Formatting -
648
649datestyle = 'iso, mdy'
650#intervalstyle = 'postgres'
651timezone = 'UTC'
652#timezone_abbreviations = 'Default' # Select the set of available time zone
653 # abbreviations. Currently, there are
654 # Default
655 # Australia (historical usage)
656 # India
657 # You can create your own file in
658 # share/timezonesets/.
659#extra_float_digits = 1 # min -15, max 3; any value >0 actually
660 # selects precise output mode
661#client_encoding = sql_ascii # actually, defaults to database
662 # encoding
663
664# These settings are initialized by initdb, but they can be changed.
665lc_messages = 'en_US.utf8' # locale for system error message
666 # strings
667lc_monetary = 'en_US.utf8' # locale for monetary formatting
668lc_numeric = 'en_US.utf8' # locale for number formatting
669lc_time = 'en_US.utf8' # locale for time formatting
670
671# default configuration for text search
672default_text_search_config = 'pg_catalog.english'
673
674# - Shared Library Preloading -
675
676#shared_preload_libraries = '' # (change requires restart)
677#local_preload_libraries = ''
678#session_preload_libraries = ''
679#jit_provider = 'llvmjit' # JIT library to use
680
681# - Other Defaults -
682
683#dynamic_library_path = '$libdir'
684
685
686#------------------------------------------------------------------------------
687# LOCK MANAGEMENT
688#------------------------------------------------------------------------------
689
690#deadlock_timeout = 1s
691#max_locks_per_transaction = 64 # min 10
692 # (change requires restart)
693#max_pred_locks_per_transaction = 64 # min 10
694 # (change requires restart)
695#max_pred_locks_per_relation = -2 # negative values mean
696 # (max_pred_locks_per_transaction
697 # / -max_pred_locks_per_relation) - 1
698#max_pred_locks_per_page = 2 # min 0
699
700
701#------------------------------------------------------------------------------
702# VERSION AND PLATFORM COMPATIBILITY
703#------------------------------------------------------------------------------
704
705# - Previous PostgreSQL Versions -
706
707#array_nulls = on
708#backslash_quote = safe_encoding # on, off, or safe_encoding
709#escape_string_warning = on
710#lo_compat_privileges = off
711#operator_precedence_warning = off
712#quote_all_identifiers = off
713#standard_conforming_strings = on
714#synchronize_seqscans = on
715
716# - Other Platforms and Clients -
717
718#transform_null_equals = off
719
720
721#------------------------------------------------------------------------------
722# ERROR HANDLING
723#------------------------------------------------------------------------------
724
725#exit_on_error = off # terminate session on any error?
726#restart_after_crash = on # reinitialize after backend crash?
727#data_sync_retry = off # retry or panic on failure to fsync
728 # data?
729 # (change requires restart)
730
731
732#------------------------------------------------------------------------------
733# CONFIG FILE INCLUDES
734#------------------------------------------------------------------------------
735
736# These options allow settings to be loaded from files other than the
737# default postgresql.conf. Note that these are directives, not variable
738# assignments, so they can usefully be given more than once.
739
740#include_dir = '...' # include files ending in '.conf' from
741 # a directory, e.g., 'conf.d'
742#include_if_exists = '...' # include file only if it exists
743#include = '...' # include file
744
745
746#------------------------------------------------------------------------------
747# CUSTOMIZED OPTIONS
748#------------------------------------------------------------------------------
749
750# Add settings for extensions here