allow_system_table_mods|off|Allows modifications of the structure of system tables.
application_name|psql|Sets the application name to be reported in statistics and logs.
archive_command|(disabled)|Sets the shell command that will be called to archive a WAL file.
archive_mode|off|Allows archiving of WAL files using archive_command.
archive_timeout|0|Forces a switch to the next xlog file if a new file has not been started within N seconds.
array_nulls|on|Enable input of NULL elements in arrays.
authentication_timeout|1min|Sets the maximum allowed time to complete client authentication.
autovacuum|on|Starts the autovacuum subprocess.
autovacuum_analyze_scale_factor|0.1|Number of tuple inserts, updates, or deletes prior to analyze as a fraction of reltuples.
autovacuum_analyze_threshold|50|Minimum number of tuple inserts, updates, or deletes prior to analyze.
autovacuum_freeze_max_age|200000000|Age at which to autovacuum a table to prevent transaction ID wraparound.
autovacuum_max_workers|3|Sets the maximum number of simultaneously running autovacuum worker processes.
autovacuum_naptime|1min|Time to sleep between autovacuum runs.
autovacuum_vacuum_cost_delay|20ms|Vacuum cost delay in milliseconds, for autovacuum.
autovacuum_vacuum_cost_limit|-1|Vacuum cost amount available before napping, for autovacuum.
autovacuum_vacuum_scale_factor|0.2|Number of tuple updates or deletes prior to vacuum as a fraction of reltuples.
autovacuum_vacuum_threshold|50|Minimum number of tuple updates or deletes prior to vacuum.
backslash_quote|safe_encoding|Sets whether "\'" is allowed in string literals.
bgwriter_delay|200ms|Background writer sleep time between rounds.
bgwriter_lru_maxpages|100|Background writer maximum number of LRU pages to flush per round.
bgwriter_lru_multiplier|2|Multiple of the average buffer usage to free per round.
block_size|8192|Shows the size of a disk block.
bonjour|off|Enables advertising the server via Bonjour.
bonjour_name||Sets the Bonjour service name.
bytea_output|hex|Sets the output format for bytea.
check_function_bodies|on|Check function bodies during CREATE FUNCTION.
checkpoint_completion_target|0.5|Time spent flushing dirty buffers during checkpoint, as fraction of checkpoint interval.
checkpoint_segments|300|Sets the maximum distance in log segments between automatic WAL checkpoints.
checkpoint_timeout|1h|Sets the maximum time between automatic WAL checkpoints.
checkpoint_warning|30s|Enables warnings if checkpoint segments are filled more frequently than this.
client_encoding|SQL_ASCII|Sets the client's character set encoding.
client_min_messages|notice|Sets the message levels that are sent to the client.
commit_delay|0|Sets the delay in microseconds between transaction commit and flushing WAL to disk.
commit_siblings|5|Sets the minimum concurrent open transactions before performing commit_delay.
config_file|/AXLE/mark/dbt3/pgdata90209/postgresql.conf|Sets the server's main configuration file.
constraint_exclusion|partition|Enables the planner to use constraints to optimize queries.
cpu_index_tuple_cost|0.005|Sets the planner's estimate of the cost of processing each index entry during an index scan.
cpu_operator_cost|0.0025|Sets the planner's estimate of the cost of processing each operator or function call.
cpu_tuple_cost|0.01|Sets the planner's estimate of the cost of processing each tuple (row).
cursor_tuple_fraction|0.1|Sets the planner's estimate of the fraction of a cursor's rows that will be retrieved.
data_directory|/AXLE/mark/dbt3/pgdata90209|Sets the server's data directory.
DateStyle|ISO, MDY|Sets the display format for date and time values.
db_user_namespace|off|Enables per-database user names.
deadlock_timeout|1s|Sets the time to wait on a lock before checking for deadlock.
debug_assertions|off|Turns on various assertion checks.
debug_pretty_print|on|Indents parse and plan tree displays.
debug_print_parse|off|Logs each query's parse tree.
debug_print_plan|off|Logs each query's execution plan.
debug_print_rewritten|off|Logs each query's rewritten parse tree.
default_statistics_target|1000|Sets the default statistics target.
default_tablespace||Sets the default tablespace to create tables and indexes in.
default_text_search_config|pg_catalog.english|Sets default text search configuration.
default_transaction_deferrable|off|Sets the default deferrable status of new transactions.
default_transaction_isolation|read committed|Sets the transaction isolation level of each new transaction.
default_transaction_read_only|off|Sets the default read-only status of new transactions.
default_with_oids|off|Create new tables with OIDs by default.
dynamic_library_path|$libdir|Sets the path for dynamically loadable modules.
effective_cache_size|200GB|Sets the planner's assumption about the size of the disk cache.
effective_io_concurrency|1|Number of simultaneous requests that can be handled efficiently by the disk subsystem.
enable_bitmapscan|on|Enables the planner's use of bitmap-scan plans.
enable_hashagg|on|Enables the planner's use of hashed aggregation plans.
enable_hashjoin|on|Enables the planner's use of hash join plans.
enable_indexonlyscan|on|Enables the planner's use of index-only-scan plans.
enable_indexscan|on|Enables the planner's use of index-scan plans.
enable_material|on|Enables the planner's use of materialization.
enable_mergejoin|on|Enables the planner's use of merge join plans.
enable_nestloop|on|Enables the planner's use of nested-loop join plans.
enable_seqscan|on|Enables the planner's use of sequential-scan plans.
enable_sort|on|Enables the planner's use of explicit sort steps.
enable_tidscan|on|Enables the planner's use of TID scan plans.
escape_string_warning|on|Warn about backslash escapes in ordinary string literals.
event_source|PostgreSQL|Sets the application name used to identify PostgreSQL messages in the event log.
exit_on_error|off|Terminate session on any error.
external_pid_file||Writes the postmaster PID to the specified file.
extra_float_digits|0|Sets the number of digits displayed for floating-point values.
from_collapse_limit|8|Sets the FROM-list size beyond which subqueries are not collapsed.
fsync|on|Forces synchronization of updates to disk.
full_page_writes|on|Writes full pages to WAL when first modified after a checkpoint.
geqo|on|Enables genetic query optimization.
geqo_effort|5|GEQO: effort is used to set the default for other GEQO parameters.
geqo_generations|0|GEQO: number of iterations of the algorithm.
geqo_pool_size|0|GEQO: number of individuals in the population.
geqo_seed|0|GEQO: seed for random path selection.
geqo_selection_bias|2|GEQO: selective pressure within the population.
geqo_threshold|12|Sets the threshold of FROM items beyond which GEQO is used.
gin_fuzzy_search_limit|0|Sets the maximum allowed result for exact search by GIN.
hba_file|/AXLE/mark/dbt3/pgdata90209/pg_hba.conf|Sets the server's "hba" configuration file.
hot_standby|off|Allows connections and queries during recovery.
hot_standby_feedback|off|Allows feedback from a hot standby to the primary that will avoid query conflicts.
ident_file|/AXLE/mark/dbt3/pgdata90209/pg_ident.conf|Sets the server's "ident" configuration file.
ignore_system_indexes|off|Disables reading from system indexes.
integer_datetimes|on|Datetimes are integer based.
IntervalStyle|postgres|Sets the display format for interval values.
join_collapse_limit|8|Sets the FROM-list size beyond which JOIN constructs are not flattened.
krb_caseins_users|off|Sets whether Kerberos and GSSAPI user names should be treated as case-insensitive.
krb_server_keyfile||Sets the location of the Kerberos server key file.
krb_srvname|postgres|Sets the name of the Kerberos service.
lc_collate|C|Shows the collation order locale.
lc_ctype|C|Shows the character classification and case conversion locale.
lc_messages|C|Sets the language in which messages are displayed.
lc_monetary|C|Sets the locale for formatting monetary amounts.
lc_numeric|C|Sets the locale for formatting numbers.
lc_time|C|Sets the locale for formatting date and time values.
listen_addresses|localhost|Sets the host name or IP address(es) to listen to.
lo_compat_privileges|off|Enables backward compatibility mode for privilege checks on large objects.
local_preload_libraries||Lists shared libraries to preload into each backend.
log_autovacuum_min_duration|-1|Sets the minimum execution time above which autovacuum actions will be logged.
log_checkpoints|off|Logs each checkpoint.
log_connections|off|Logs each successful connection.
log_destination|stderr|Sets the destination for server log output.
log_directory|pg_log|Sets the destination directory for log files.
log_disconnections|off|Logs end of a session, including duration.
log_duration|off|Logs the duration of each completed SQL statement.
log_error_verbosity|default|Sets the verbosity of logged messages.
log_executor_stats|off|Writes executor performance statistics to the server log.
log_file_mode|0600|Sets the file permissions for log files.
log_filename|postgresql-%Y-%m-%d_%H%M%S.log|Sets the file name pattern for log files.
log_hostname|off|Logs the host name in the connection logs.
log_line_prefix||Controls information prefixed to each log line.
log_lock_waits|off|Logs long lock waits.
log_min_duration_statement|-1|Sets the minimum execution time above which statements will be logged.
log_min_error_statement|error|Causes all statements generating error at or above this level to be logged.
log_min_messages|warning|Sets the message levels that are logged.
log_parser_stats|off|Writes parser performance statistics to the server log.
log_planner_stats|off|Writes planner performance statistics to the server log.
log_rotation_age|1d|Automatic log file rotation will occur after N minutes.
log_rotation_size|10MB|Automatic log file rotation will occur after N kilobytes.
log_statement|none|Sets the type of statements logged.
log_statement_stats|off|Writes cumulative performance statistics to the server log.
log_temp_files|-1|Log the use of temporary files larger than this number of kilobytes.
log_timezone|Europe/Madrid|Sets the time zone to use in log messages.
log_truncate_on_rotation|off|Truncate existing log files of same name during log rotation.
logging_collector|off|Start a subprocess to capture stderr output and/or csvlogs into log files.
maintenance_work_mem|4GB|Sets the maximum memory to be used for maintenance operations.
max_connections|100|Sets the maximum number of concurrent connections.
max_files_per_process|1000|Sets the maximum number of simultaneously open files for each server process.
max_function_args|100|Shows the maximum number of function arguments.
max_identifier_length|63|Shows the maximum identifier length.
max_index_keys|32|Shows the maximum number of index keys.
max_locks_per_transaction|64|Sets the maximum number of locks per transaction.
max_pred_locks_per_transaction|64|Sets the maximum number of predicate locks per transaction.
max_prepared_transactions|0|Sets the maximum number of simultaneously prepared transactions.
max_stack_depth|2MB|Sets the maximum stack depth, in kilobytes.
max_standby_archive_delay|30s|Sets the maximum delay before canceling queries when a hot standby server is processing archived WAL data.
max_standby_streaming_delay|30s|Sets the maximum delay before canceling queries when a hot standby server is processing streamed WAL data.
max_wal_senders|0|Sets the maximum number of simultaneously running WAL sender processes.
password_encryption|on|Encrypt passwords.
port|5432|Sets the TCP port the server listens on.
post_auth_delay|0|Waits N seconds on connection startup after authentication.
pre_auth_delay|0|Waits N seconds on connection startup before authentication.
quote_all_identifiers|off|When generating SQL fragments, quote all identifiers.
random_page_cost|4|Sets the planner's estimate of the cost of a nonsequentially fetched disk page.
replication_timeout|1min|Sets the maximum time to wait for WAL replication.
restart_after_crash|on|Reinitialize server after backend crash.
search_path|"$user",public|Sets the schema search order for names that are not schema-qualified.
segment_size|1GB|Shows the number of pages per disk file.
seq_page_cost|1|Sets the planner's estimate of the cost of a sequentially fetched disk page.
server_encoding|SQL_ASCII|Sets the server (database) character set encoding.
server_version|9.2.9|Shows the server version.
server_version_num|90209|Shows the server version as an integer.
session_replication_role|origin|Sets the session's behavior for triggers and rewrite rules.
shared_buffers|8GB|Sets the number of shared memory buffers used by the server.
shared_preload_libraries||Lists shared libraries to preload into server.
sql_inheritance|on|Causes subtables to be included by default in various commands.
ssl|off|Enables SSL connections.
ssl_ca_file||Location of the SSL certificate authority file.
ssl_cert_file|server.crt|Location of the SSL server certificate file.
ssl_ciphers|none|Sets the list of allowed SSL ciphers.
ssl_crl_file||Location of the SSL certificate revocation list file.
ssl_key_file|server.key|Location of the SSL server private key file.
ssl_renegotiation_limit|512MB|Set the amount of traffic to send and receive before renegotiating the encryption keys.
standard_conforming_strings|on|Causes '...' strings to treat backslashes literally.
statement_timeout|0|Sets the maximum allowed duration of any statement.
stats_temp_directory|pg_stat_tmp|Writes temporary statistics files to the specified directory.
superuser_reserved_connections|3|Sets the number of connection slots reserved for superusers.
synchronize_seqscans|on|Enable synchronized sequential scans.
synchronous_commit|on|Sets the current transaction's synchronization level.
synchronous_standby_names||List of names of potential synchronous standbys.
syslog_facility|local0|Sets the syslog "facility" to be used when syslog enabled.
syslog_ident|postgres|Sets the program name used to identify PostgreSQL messages in syslog.
tcp_keepalives_count|0|Maximum number of TCP keepalive retransmits.
tcp_keepalives_idle|0|Time between issuing TCP keepalives.
tcp_keepalives_interval|0|Time between TCP keepalive retransmits.
temp_buffers|8MB|Sets the maximum number of temporary buffers used by each session.
temp_file_limit|-1|Limits the total size of all temporary files used by each session.
temp_tablespaces||Sets the tablespace(s) to use for temporary tables and sort files.
TimeZone|Europe/Madrid|Sets the time zone for displaying and interpreting time stamps.
timezone_abbreviations|Default|Selects a file of time zone abbreviations.
trace_notify|off|Generates debugging output for LISTEN and NOTIFY.
trace_recovery_messages|log|Enables logging of recovery-related debugging information.
trace_sort|off|Emit information about resource usage in sorting.
track_activities|on|Collects information about executing commands.
track_activity_query_size|1024|Sets the size reserved for pg_stat_activity.query, in bytes.
track_counts|on|Collects statistics on database activity.
track_functions|none|Collects function-level statistics on database activity.
track_io_timing|off|Collects timing statistics for database I/O activity.
transaction_deferrable|off|Whether to defer a read-only serializable transaction until it can be executed with no possible serialization failures.
transaction_isolation|read committed|Sets the current transaction's isolation level.
transaction_read_only|off|Sets the current transaction's read-only status.
transform_null_equals|off|Treats "expr=NULL" as "expr IS NULL".
unix_socket_directory||Sets the directory where the Unix-domain socket will be created.
unix_socket_group||Sets the owning group of the Unix-domain socket.
unix_socket_permissions|0777|Sets the access permissions of the Unix-domain socket.
update_process_title|on|Updates the process title to show the active SQL command.
vacuum_cost_delay|0|Vacuum cost delay in milliseconds.
vacuum_cost_limit|200|Vacuum cost amount available before napping.
vacuum_cost_page_dirty|20|Vacuum cost for a page dirtied by vacuum.
vacuum_cost_page_hit|1|Vacuum cost for a page found in the buffer cache.
vacuum_cost_page_miss|10|Vacuum cost for a page not found in the buffer cache.
vacuum_defer_cleanup_age|0|Number of transactions by which VACUUM and HOT cleanup should be deferred, if any.
vacuum_freeze_min_age|50000000|Minimum age at which VACUUM should freeze a table row.
vacuum_freeze_table_age|150000000|Age at which VACUUM should scan whole table to freeze tuples.
wal_block_size|8192|Shows the block size in the write ahead log.
wal_buffers|16MB|Sets the number of disk-page buffers in shared memory for WAL.
wal_keep_segments|0|Sets the number of WAL files held for standby servers.
wal_level|minimal|Set the level of information written to the WAL.
wal_receiver_status_interval|10s|Sets the maximum interval between WAL receiver status reports to the primary.
wal_segment_size|16MB|Shows the number of pages per write ahead log segment.
wal_sync_method|fdatasync|Selects the method used for forcing WAL updates to disk.
wal_writer_delay|200ms|WAL writer sleep time between WAL flushes.
work_mem|1GB|Sets the maximum memory to be used for query workspaces.
xmlbinary|base64|Sets how binary values are to be encoded in XML.
xmloption|content|Sets whether XML data in implicit parsing and serialization operations is to be considered as documents or content fragments.
zero_damaged_pages|off|Continues processing past damaged page headers.