- min:
200000000 - max:
1500000000
autovacuum_freeze_max_age Specifies the maximum age (in transactions) that a table's pg_class.relfrozenxid field can attain before a VACUUM operation is forced to prevent transaction ID wraparound within the table. Note that the system will launch autovacuum processes to prevent wraparound even when autovacuum is otherwise disabled. This parameter will cause the server to be restarted. |
autovacuum_max_workers Specifies the maximum number of autovacuum processes (other than the autovacuum launcher) that may be running at any one time. The default is three. This parameter can only be set at server start. |
autovacuum_naptime Specifies the minimum delay between autovacuum runs on any given database. The delay is measured in seconds, and the default is one minute |
autovacuum_vacuum_threshold Specifies the minimum number of updated or deleted tuples needed to trigger a VACUUM in any one table. The default is 50 tuples |
autovacuum_analyze_threshold Specifies the minimum number of inserted, updated or deleted tuples needed to trigger an ANALYZE in any one table. The default is 50 tuples. |
autovacuum_vacuum_scale_factor Specifies a fraction of the table size to add to autovacuum_vacuum_threshold when deciding whether to trigger a VACUUM. The default is 0.2 (20% of table size) |
autovacuum_analyze_scale_factor Specifies a fraction of the table size to add to autovacuum_analyze_threshold when deciding whether to trigger an ANALYZE. The default is 0.2 (20% of table size) |
autovacuum_vacuum_cost_delay Specifies the cost delay value that will be used in automatic VACUUM operations. If -1 is specified, the regular vacuum_cost_delay value will be used. The default value is 20 milliseconds |
autovacuum_vacuum_cost_limit Specifies the cost limit value that will be used in automatic VACUUM operations. If -1 is specified (which is the default), the regular vacuum_cost_limit value will be used. |
bgwriter_delay Specifies the delay between activity rounds for the background writer in milliseconds. Default is 200. |
bgwriter_flush_after Whenever more than bgwriter_flush_after bytes have been written by the background writer, attempt to force the OS to issue these writes to the underlying storage. Specified in kilobytes, default is 512. Setting of 0 disables forced writeback. |
bgwriter_lru_maxpages In each round, no more than this many buffers will be written by the background writer. Setting this to zero disables background writing. Default is 100. |
bgwriter_lru_multiplier The average recent need for new buffers is multiplied by bgwriter_lru_multiplier to arrive at an estimate of the number that will be needed during the next round, (up to bgwriter_lru_maxpages). 1.0 represents a “just in time” policy of writing exactly the number of buffers predicted to be needed. Larger values provide some cushion against spikes in demand, while smaller values intentionally leave writes to be done by server processes. The default is 2.0. |
deadlock_timeout This is the amount of time, in milliseconds, to wait on a lock before checking to see if there is a deadlock condition. |
password_encryption Chooses the algorithm for encrypting passwords. |
default_toast_compression Specifies the default TOAST compression method for values of compressible columns (the default is lz4). |
idle_in_transaction_session_timeout Time out sessions with open transactions after this number of milliseconds |
jit Controls system-wide use of Just-in-Time Compilation (JIT). |
log_autovacuum_min_duration Causes each action executed by autovacuum to be logged if it ran for at least the specified number of milliseconds. Setting this to zero logs all autovacuum actions. Minus-one (the default) disables logging autovacuum actions. |
log_error_verbosity Controls the amount of detail written in the server log for each message that is logged. |
log_line_prefix Choose from one of the available log formats. |
log_min_duration_statement Log statements that take more than this number of milliseconds to run, -1 disables |
log_temp_files Log statements for each temporary file created larger than this number of kilobytes, -1 disables |
max_files_per_process PostgreSQL maximum number of files that can be open per process |
max_prepared_transactions PostgreSQL maximum prepared transactions |
max_pred_locks_per_transaction PostgreSQL maximum predicate locks per transaction |
max_locks_per_transaction PostgreSQL maximum locks per transaction |
max_slot_wal_keep_size PostgreSQL maximum WAL size (MB) reserved for replication slots. Default is -1 (unlimited). wal_keep_size minimum WAL size setting takes precedence over this. |
max_stack_depth Maximum depth of the stack in bytes |
max_standby_archive_delay Max standby archive delay in milliseconds |
max_standby_streaming_delay Max standby streaming delay in milliseconds |
max_replication_slots PostgreSQL maximum replication slots |
max_logical_replication_workers PostgreSQL maximum logical replication workers (taken from the pool of max_parallel_workers) |
max_parallel_workers Sets the maximum number of workers that the system can support for parallel queries |
max_parallel_workers_per_gather Sets the maximum number of workers that can be started by a single Gather or Gather Merge node |
max_worker_processes Sets the maximum number of background processes that the system can support |
pg_partman_bgw.role Controls which role to use for pg_partman's scheduled background tasks. |
pg_partman_bgw.interval Sets the time interval to run pg_partman's scheduled tasks |
pg_stat_statements.track Controls which statements are counted. Specify top to track top-level statements (those issued directly by clients), all to also track nested statements (such as statements invoked within functions), or none to disable statement statistics collection. The default value is top. |
temp_file_limit PostgreSQL temporary file limit in KiB, -1 for unlimited |
timezone PostgreSQL service timezone |
track_activity_query_size Specifies the number of bytes reserved to track the currently executing command for each active session. |
track_commit_timestamp Record commit time of transactions. |
track_functions Enables tracking of function call counts and time used. |
track_io_timing Enables timing of database I/O calls. This parameter is off by default, because it will repeatedly query the operating system for the current time, which may cause significant overhead on some platforms. |
max_wal_senders PostgreSQL maximum WAL senders |
wal_sender_timeout Terminate replication connections that are inactive for longer than this amount of time, in milliseconds. Setting this value to zero disables the timeout. |
wal_writer_delay WAL flush interval in milliseconds. Note that setting this value to lower than the default 200ms may negatively impact performance |