krb_server_keyfile (string)
+
+
krb_server_keyfile configuration parameter+
Sets the location of the Kerberos server key file. See
db_user_namespace (boolean)
+
+
db_user_namespace configuration parameter+
This allows per-database user names. It is off by default.
shared_buffers (integer)
+
+
shared_buffers configuration parameter+
Sets the number of shared memory buffers used by the database
work_mem (integer)
+
+
work_mem configuration parameter+
Specifies the amount of memory to be used by internal sort operations
maintenance_work_mem (integer)
+
+
maintenance_work_mem configuration parameter+
Specifies the maximum amount of memory to be used in maintenance
max_stack_depth (integer)
+
+
max_stack_depth configuration parameter+
Specifies the maximum safe depth of the server's execution stack.
max_fsm_pages (integer)
+
+
max_fsm_pages configuration parameter+
Sets the maximum number of disk pages for which free space will
max_fsm_relations (integer)
+
+
max_fsm_relations configuration parameter+
Sets the maximum number of relations (tables and indexes) for which
max_files_per_process (integer)
+
+
max_files_per_process configuration parameter+
Sets the maximum number of simultaneously open files allowed to each
preload_libraries (string)
+
+
preload_libraries configuration parameter+
This variable specifies one or more shared libraries that are
vacuum_cost_delay (integer)
+
+
vacuum_cost_delay configuration parameter+
The length of time, in milliseconds, that the process will sleep
vacuum_cost_page_hit (integer)
+
+
vacuum_cost_page_hit configuration parameter+
The estimated cost for vacuuming a buffer found in the shared buffer
vacuum_cost_page_miss (integer)
+
+
vacuum_cost_page_miss configuration parameter+
The estimated cost for vacuuming a buffer that has to be read from
vacuum_cost_page_dirty (integer)
+
+
vacuum_cost_page_dirty configuration parameter+
The estimated cost charged when vacuum modifies a block that was
vacuum_cost_limit (integer)
+
+
vacuum_cost_limit configuration parameter+
The accumulated cost that will cause the vacuuming process to sleep.
bgwriter_delay (integer)
+
+
bgwriter_delay configuration parameter+
Specifies the delay between activity rounds for the
bgwriter_percent (integer)
+
+
bgwriter_percent configuration parameter+
In each round, no more than this percentage of the currently
bgwriter_maxpages (integer)
+
+
bgwriter_maxpages configuration parameter+
In each round, no more than this many dirty buffers will be
+
fsync configuration parameter
-
fsync (boolean)
wal_sync_method (string)
+
+
wal_sync_method configuration parameter+
Method used for forcing WAL updates out to disk. Possible
wal_buffers (integer)
+
+
wal_buffers configuration parameter+
Number of disk-page buffers allocated in shared memory for WAL data.
commit_delay (integer)
+
+
commit_delay configuration parameter+
Time delay between writing a commit record to the WAL buffer
commit_siblings (integer)
+
+
commit_siblings configuration parameter+
Minimum number of concurrent open transactions to require
checkpoint_segments (integer)
+
+
checkpoint_segments configuration parameter+
Maximum distance between automatic WAL checkpoints, in log
checkpoint_timeout (integer)
+
+
checkpoint_timeout configuration parameter+
Maximum time between automatic WAL checkpoints, in
checkpoint_warning (integer)
+
+
checkpoint_warning configuration parameter+
Write a message to the server logs if checkpoints caused by
archive_command (string)
+
+
archive_command configuration parameter+
The shell command to execute to archive a completed segment of
enable_hashagg (boolean)
+
+
enable_hashagg configuration parameter+
Enables or disables the query planner's use of hashed
enable_hashjoin (boolean)
+
+
enable_hashjoin configuration parameter+
Enables or disables the query planner's use of hash-join plan
+ enable_indexscan (boolean)
-
- enable_indexscan (boolean)
+
+
enable_indexscan configuration parameter+
Enables or disables the query planner's use of index-scan plan
enable_mergejoin (boolean)
+
+
enable_mergejoin configuration parameter+
Enables or disables the query planner's use of merge-join plan
enable_nestloop (boolean)
+
+
enable_nestloop configuration parameter+
Enables or disables the query planner's use of nested-loop join
+ enable_seqscan (boolean)
-
- enable_seqscan (boolean)
+
+
enable_seqscan configuration parameter+
Enables or disables the query planner's use of sequential scan
enable_sort (boolean)
+
+
enable_sort configuration parameter+
Enables or disables the query planner's use of explicit sort
enable_tidscan (boolean)
+
+
enable_tidscan configuration parameter+
Enables or disables the query planner's use of
TID
effective_cache_size (floating point)
+
+
effective_cache_size configuration parameter+
Sets the planner's assumption about the effective size of the
random_page_cost (floating point)
+
+
random_page_cost configuration parameter+
Sets the planner's estimate of the cost of a
cpu_tuple_cost (floating point)
+
+
cpu_tuple_cost configuration parameter+
Sets the planner's estimate of the cost of processing
cpu_index_tuple_cost (floating point)
+
+
cpu_index_tuple_cost configuration parameter+
Sets the planner's estimate of the cost of processing
cpu_operator_cost (floating point)
+
+
cpu_operator_cost configuration parameter+
Sets the planner's estimate of the cost of processing each
genetic query optimization
+
+
geqo configuration parameter+
geqo (boolean)
geqo_threshold (integer)
+
+
geqo_threshold configuration parameter+
Use genetic query optimization to plan queries with at least
geqo_effort
(integer)
+
+
geqo_effort configuration parameter+
Controls the tradeoff between planning time and query plan
geqo_pool_size (integer)
+
+
geqo_pool_size configuration parameter+
Controls the pool size used by GEQO. The pool size is the
geqo_generations (integer)
+
+
geqo_generations configuration parameter+
Controls the number of generations used by GEQO. Generations
geqo_selection_bias (floating point)
+
+
geqo_selection_bias configuration parameter+
Controls the selection bias used by GEQO. The selection bias
default_statistics_target (integer)
+
+
default_statistics_target configuration parameter+
Sets the default statistics target for table columns that have
from_collapse_limit (integer)
+
+
from_collapse_limit configuration parameter+
The planner will merge sub-queries into upper queries if the
join_collapse_limit (integer)
+
+
join_collapse_limit configuration parameter+
The planner will rewrite explicit inner JOIN
specified via the JOIN construct would
never be reordered by the query planner. The query planner has
subsequently been improved so that inner joins written in this
- form can be reordered; this configuration variable controls
+ form can be reordered; this configuration parameter controls
the extent to which this reordering is performed.
log_destination (string)
+
+
log_destination configuration parameter+
PostgreSQL supports several methods
redirect_stderr (boolean)
-
- This option allows messages sent to
stderr to be- captured and redirected into log files.
- This option, in combination with logging to
stderr,- is often more useful than
- logging to
syslog, since some types of messages- may not appear in
syslog output (a common example- is dynamic-linker failure messages).
- This option can only be set at server start.
-
-
+
+
redirect_stderr configuration parameter+
+
+ This option allows messages sent to
stderr to be+ captured and redirected into log files.
+ This option, in combination with logging to
stderr,+ is often more useful than
+ logging to
syslog, since some types of messages+ may not appear in
syslog output (a common example+ is dynamic-linker failure messages).
+ This option can only be set at server start.
+
+
log_directory (string)
-
- When redirect_stderr is enabled, this option
- determines the directory in which log files will be created.
- It may be specified as an absolute path, or relative to the
- cluster data directory.
- This option can only be set at server start or in the
- postgresql.conf configuration file.
-
-
+
+
log_directory configuration parameter+
+
+ When redirect_stderr is enabled, this option
+ determines the directory in which log files will be created.
+ It may be specified as an absolute path, or relative to the
+ cluster data directory.
+ This option can only be set at server start or in the
+ postgresql.conf configuration file.
+
+
log_filename (string)
-
- When redirect_stderr is enabled, this option
- sets the file names of the created log files. The value
- is treated as a strftime pattern,
- so %-escapes
- can be used to specify time-varying file names.
- If no %-escapes are present,
- append the epoch of the new log file's open time. For example,
- if log_filename were server_log, then the
- chosen file name would be server_log.1093827753
- for a log starting at Sun Aug 29 19:02:33 2004 MST.
- This option can only be set at server start or in the
- postgresql.conf configuration file.
-
-
+
+
log_filename configuration parameter+
+
+ When redirect_stderr is enabled, this option
+ sets the file names of the created log files. The value
+ is treated as a strftime pattern,
+ so %-escapes
+ can be used to specify time-varying file names.
+ If no %-escapes are present,
+ append the epoch of the new log file's open time. For example,
+ if log_filename were server_log, then the
+ chosen file name would be server_log.1093827753
+ for a log starting at Sun Aug 29 19:02:33 2004 MST.
+ This option can only be set at server start or in the
+ postgresql.conf configuration file.
+
+
log_rotation_age (integer)
-
- When redirect_stderr is enabled, this option
- determines the maximum lifetime of an individual log file.
- After this many minutes have elapsed, a new log file will
- be created. Set to zero to disable time-based creation of
- new log files.
- This option can only be set at server start or in the
- postgresql.conf configuration file.
-
-
+
+
log_rotation_age configuration parameter+
+
+ When redirect_stderr is enabled, this option
+ determines the maximum lifetime of an individual log file.
+ After this many minutes have elapsed, a new log file will
+ be created. Set to zero to disable time-based creation of
+ new log files.
+ This option can only be set at server start or in the
+ postgresql.conf configuration file.
+
+
log_rotation_size (integer)
-
- When redirect_stderr is enabled, this option
- determines the maximum size of an individual log file.
- After this many kilobytes have been emitted into a log file,
- a new log file will be created. Set to zero to disable size-based
- creation of new log files.
- This option can only be set at server start or in the
- postgresql.conf configuration file.
-
-
+
+
log_rotation_size configuration parameter+
+
+ When redirect_stderr is enabled, this option
+ determines the maximum size of an individual log file.
+ After this many kilobytes have been emitted into a log file,
+ a new log file will be created. Set to zero to disable size-based
+ creation of new log files.
+ This option can only be set at server start or in the
+ postgresql.conf configuration file.
+
+
log_truncate_on_rotation (boolean)
-
- When redirect_stderr is enabled, this option will cause
-
PostgreSQL to truncate (overwrite),
- rather than append to, any existing log file of the same name.
- However, truncation will occur only when a new file is being opened
- due to time-based rotation, not during server startup or size-based
- rotation. When false, pre-existing files will be appended to in
- all cases. For example, using this option in combination with
- a log_filename like postgresql-%H.log
- would result in generating twenty-four hourly log files and then
- cyclically overwriting them.
- This option can only be set at server start or in the
- postgresql.conf configuration file.
-
- Example: To keep 7 days of logs, one log file per day named
- server_log.Mon, server_log.Tue,
- etc, and automatically overwrite last week's log with this week's log,
- set log_filename to server_log.%a,
- log_truncate_on_rotation to true, and
- log_rotation_age to 1440.
-
- Example: To keep 24 hours of logs, one log file per hour, but
- also rotate sooner if the log file size exceeds 1GB, set
- log_filename to server_log.%H%M,
- log_truncate_on_rotation to true,
- log_rotation_age to 60, and
- log_rotation_size to 1000000.
- Including %M in log_filename allows
- any size-driven rotations that may occur to select a filename
- different from the hour's initial filename.
-
-
+
+
log_truncate_on_rotation configuration parameter+
+
+ When redirect_stderr is enabled, this option will cause
+
PostgreSQL to truncate (overwrite),
+ rather than append to, any existing log file of the same name.
+ However, truncation will occur only when a new file is being opened
+ due to time-based rotation, not during server startup or size-based
+ rotation. When false, pre-existing files will be appended to in
+ all cases. For example, using this option in combination with
+ a log_filename like postgresql-%H.log
+ would result in generating twenty-four hourly log files and then
+ cyclically overwriting them.
+ This option can only be set at server start or in the
+ postgresql.conf configuration file.
+
+ Example: To keep 7 days of logs, one log file per day named
+ server_log.Mon, server_log.Tue,
+ etc, and automatically overwrite last week's log with this week's log,
+ set log_filename to server_log.%a,
+ log_truncate_on_rotation to true, and
+ log_rotation_age to 1440.
+
+ Example: To keep 24 hours of logs, one log file per hour, but
+ also rotate sooner if the log file size exceeds 1GB, set
+ log_filename to server_log.%H%M,
+ log_truncate_on_rotation to true,
+ log_rotation_age to 60, and
+ log_rotation_size to 1000000.
+ Including %M in log_filename allows
+ any size-driven rotations that may occur to select a filename
+ different from the hour's initial filename.
+
+
syslog_facility (string)
-
- When logging to
syslog is enabled, this option- facility
to be used. You may choose
- from LOCAL0, LOCAL1,
- LOCAL2, LOCAL3, LOCAL4,
- LOCAL5, LOCAL6, LOCAL7;
- the default is LOCAL0. See also the
- documentation of your system's
- This option can only be set at server start.
-
-
+
+
syslog_facility configuration parameter+
+
+ When logging to
syslog is enabled, this option+ facility
to be used. You may choose
+ from LOCAL0, LOCAL1,
+ LOCAL2, LOCAL3, LOCAL4,
+ LOCAL5, LOCAL6, LOCAL7;
+ the default is LOCAL0. See also the
+ documentation of your system's
+ This option can only be set at server start.
+
+
syslog_ident (string)
+
+
syslog_identity configuration parameter+
When logging to
syslog is enabled, this option
client_min_messages (string)
+
+
client_min_messages configuration parameter+
Controls which message levels are sent to the client.
log_min_messages (string)
+
+
log_min_messages configuration parameter+
Controls which message levels are written to the server log.
log_error_verbosity (string)
+
+
log_error_verbosity configuration parameter+
Controls the amount of detail written in the server log for each
log_min_error_statement (string)
+
+
log_min_error_statement configuration parameter+
Controls whether or not the SQL statement that causes an error
log_min_duration_statement (integer)
+
+
log_min_duration_statement configuration parameter+
Sets a minimum statement execution time (in milliseconds)
silent_mode (boolean)
+
+
silent_mode configuration parameter+
Runs the server silently. If this option is set, the server
debug_print_rewritten (boolean)
debug_print_plan (boolean)
debug_pretty_print (boolean)
+
+
debug_print_parse configuration parameter+
+
+
debug_print_rewritten configuration parameter+
+
+
debug_print_plan configuration parameter+
+
+
debug_pretty_print configuration parameter+
These options enable various debugging output to be sent to
log_connections (boolean)
+
+
log_connections configuration parameter+
This outputs a line to the server logs detailing each successful
log_disconnections (boolean)
+
+
log_disconnections configuration parameter+
This outputs a line in the server logs similar to
log_duration (boolean)
+
+
log_duration configuration parameter+
Causes the duration of every completed statement which satisfies
log_line_prefix (string)
+
+
log_line_prefix configuration parameter+
This is a printf-style string that is output at the
log_statement (string)
+
+
log_statement configuration parameter+
Controls which SQL statements are logged. Valid values are
log_hostname (boolean)
+
+
log_hostname configuration parameter+
By default, connection logs only show the IP address of the
log_parser_stats (boolean)
log_planner_stats (boolean)
log_executor_stats (boolean)
+
+
log_statement_stats configuration parameter+
+
+
log_parser_stats configuration parameter+
+
+
log_planner_stats configuration parameter+
+
+
log_executor_stats configuration parameter+
For each query, write performance statistics of the respective
stats_start_collector (boolean)
+
+
stats_start_collector configuration parameter+
Controls whether the server should start the
stats_command_string (boolean)
+
+
stats_command_string configuration parameter+
Enables the collection of statistics on the currently
stats_block_level (boolean)
+
+
stats_block_level configuration parameter+
Enables the collection of block-level statistics on database
stats_row_level (boolean)
+
+
stats_row_level configuration parameter+
Enables the collection of row-level statistics on database
stats_reset_on_server_start (boolean)
+
+
stats_reset_on_server_start configuration parameter+
If on, collected statistics are zeroed out whenever the server
search_path (string)
+
+
search_path configuration parameter+
default_tablespace (string)
+
+
default_tablespace configuration parameter+
check_function_bodies (boolean)
+
+
check_function_bodies configuration parameter+
This parameter is normally true. When set to false, it disables
transaction isolation level
-
+
+
default_transaction_isolation configuration parameter+
default_transaction_isolation (string)
+
+
default_transaction_read_only configuration parameter+
default_transaction_read_only (boolean)
statement_timeout (integer)
+
+
statement_timeout configuration parameter+
Aborts any statement that takes over the specified number of
DateStyle (string)
+
+
DateStyle configuration parameter+
Sets the display format for date and time values, as well as the
timezone (string)
+
+
timezone configuration parameter+
australian_timezones (boolean)
+
+
australian_timezones configuration parameter+
display
+
+
extra_float_digits configuration parameter+
extra_float_digits (integer)
client_encoding (string)
+
+
client_encoding configuration parameter+
lc_messages (string)
+
+
lc_messages configuration parameter+
Sets the language in which messages are displayed. Acceptable
lc_monetary (string)
+
+
lc_monetary configuration parameter+
Sets the locale to use for formatting monetary amounts, for
lc_numeric (string)
+
+
lc_numeric configuration parameter+
Sets the locale to use for formatting numbers, for example
lc_time (string)
+
+
lc_time configuration parameter+
Sets the locale to use for formatting date and time values.
explain_pretty_print (boolean)
+
+
explain_pretty_print configuration parameter+
Determines whether EXPLAIN VERBOSE uses the
dynamic_library_path (string)
+
+
dynamic_library_path configuration parameter+
deadlock
+
+
deadlock_timeout configuration parameter+
deadlock_timeout (integer)
max_locks_per_transaction (integer)
+
+
max_locks_per_transaction configuration parameter+
The shared lock table is sized on the assumption that at most
add_missing_from (boolean)
+
+
add_missing_from configuration parameter+
When true, tables that are referenced by a query will be
regex_flavor (string)
+
+
regex_flavor configuration parameter+
The regular expression flavor can be set to
sql_inheritance (boolean)
+
+
sql_inheritance configuration parameter+
default_with_oids (boolean)
+
+
default_with_oids configuration parameter+
This controls whether CREATE TABLE and
transform_null_equals (boolean)
+
+
transform_null_equals configuration parameter+
When turned on, expressions of the form
block_size (integer)
+
+
block_size configuration parameter+
Shows the size of a disk block. It is determined by the value
integer_datetimes (boolean)
+
+
integer_datetimes configuration parameter+
Shows whether
PostgreSQL was built
lc_collate (string)
+
+
lc_collate configuration parameter+
Shows the locale in which sorting of textual data is done.
lc_ctype (string)
+
+
lc_ctype configuration parameter+
Shows the locale that determines character classifications.
max_function_args (integer)
+
+
max_function_args configuration parameter+
Shows the maximum number of function arguments. It is determined by
max_identifier_length (integer)
+
+
max_identifier_length configuration parameter+
Shows the maximum identifier length. It is determined as one
max_index_keys (integer)
+
+
max_index_keys configuration parameter+
Shows the maximum number of index keys. It is determined by
server_encoding (string)
+
+
server_encoding configuration parameter+
server_version (string)
+
+
server_version configuration parameter+
Shows the version number of the server. It is determined by the
custom_variable_classes (string)
-
custom_variable_classes+
+
custom_variable_classes configuration parameter+
This variable specifies one or several class names to be used for
debug_assertions (boolean)
+
+
debug_assertions configuration parameter+
Turns on various assertion checks. This is a debugging aid. If
debug_shared_buffers (integer)
+
+
debug_shared_buffers configuration parameter+
Number of seconds between ARC reports.
pre_auth_delay (integer)
+
+
pre_auth_delay configuration parameter+
If nonzero, a delay of this many seconds occurs just after a new
trace_notify (boolean)
+
+
trace_notify configuration parameter+
Generates a great amount of debugging output for the
wal_debug (boolean)
+
+
wal_debug configuration parameter+
If true, emit WAL-related debugging output. This option is
zero_damaged_pages (boolean)
+
+
zero_damaged_pages configuration parameter+
Detection of a damaged page header normally causes
projects / postgresql.git / commitdiff