# [[guc:max_connections]]

> 数据库最大并发连接数。
---

数据库最大并发连接数。

[PostgreSQL 18 官方参数参考](https://www.postgresql.org/docs/18/runtime-config.html#GUC-MAX-CONNECTIONS)

## 被哪些等待事件引用 {#wait-events}

- [Client/ClientRead](/zh/client/client-read/)
- [Client/ClientWrite](/zh/client/client-write/)
- [Client/GssOpenServer](/zh/client/gss-open-server/)
- [Client/LibpqwalreceiverConnect](/zh/client/libpqwalreceiver-connect/)
- [Client/LibpqwalreceiverReceive](/zh/client/libpqwalreceiver-receive/)
- [Client/SslOpenServer](/zh/client/ssl-open-server/)
- [Client/WaitForStandbyConfirmation](/zh/client/wait-for-standby-confirmation/)
- [Client/WalSenderWaitForWal](/zh/client/wal-sender-wait-for-wal/)
- [Client/WalSenderWriteData](/zh/client/wal-sender-write-data/)
- [LWLock/LockManager](/zh/lwlock/lock-manager/)
- [LWLock/ProcArray](/zh/lwlock/proc-array/)