# Related GUCs

> Configuration controls referenced by wait-event response guidance.
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Configuration controls referenced by wait-event response guidance. This index contains **21** entries.

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Section pages:

- [[[guc:autovacuum_freeze_max_age]]](/guc/autovacuum-freeze-max-age/): Transaction age that forces anti-wraparound vacuum.
- [[[guc:autovacuum_multixact_freeze_max_age]]](/guc/autovacuum-multixact-freeze-max-age/): Multixact age that forces anti-wraparound vacuum.
- [[[guc:autovacuum_naptime]]](/guc/autovacuum-naptime/): Minimum delay between autovacuum launcher rounds per database.
- [[[guc:checkpoint_timeout]]](/guc/checkpoint-timeout/): Maximum time between automatic WAL checkpoints.
- [[[guc:deadlock_timeout]]](/guc/deadlock-timeout/): Delay before PostgreSQL checks a lock wait for deadlock.
- [[[guc:full_page_writes]]](/guc/full-page-writes/): Controls full-page images after checkpoints for crash safety.
- [[[guc:idle_in_transaction_session_timeout]]](/guc/idle-in-transaction-session-timeout/): Terminates sessions left idle inside an open transaction.
- [[[guc:lock_timeout]]](/guc/lock-timeout/): Aborts statements that wait too long to acquire a lock.
- [[[guc:max_connections]]](/guc/max-connections/): Maximum concurrent database connections.
- [[[guc:max_locks_per_transaction]]](/guc/max-locks-per-transaction/): Shared lock-table capacity budget per transaction.
- [[[guc:max_parallel_workers_per_gather]]](/guc/max-parallel-workers-per-gather/): Maximum parallel workers per Gather/Gather Merge node.
- [[[guc:max_wal_size]]](/guc/max-wal-size/): Soft WAL-volume limit that can trigger checkpoints.
- [[[guc:shared_buffers]]](/guc/shared-buffers/): Size of PostgreSQL's shared buffer cache.
- [[[guc:synchronous_commit]]](/guc/synchronous-commit/): Controls when commits wait for local or remote WAL durability.
- [[[guc:synchronous_standby_names]]](/guc/synchronous-standby-names/): Selects standbys that can satisfy synchronous commit.
- [[[guc:vacuum_freeze_table_age]]](/guc/vacuum-freeze-table-age/): Table age at which VACUUM scans for freezing.
- [[[guc:vacuum_multixact_freeze_table_age]]](/guc/vacuum-multixact-freeze-table-age/): Table multixact age at which VACUUM scans for freezing.
- [[[guc:wal_buffers]]](/guc/wal-buffers/): Shared-memory buffers used for WAL not yet written to disk.
- [[[guc:wal_sender_timeout]]](/guc/wal-sender-timeout/): Disconnects inactive replication connections after a timeout.
- [[[guc:wal_writer_delay]]](/guc/wal-writer-delay/): Delay between WAL writer activity rounds.
- [[[guc:wal_writer_flush_after]]](/guc/wal-writer-flush-after/): Amount of WAL written before the WAL writer requests a flush.