# III. PostgreSQL 伺服器應用程式

本部分包含 PostgreSQL 伺服器應用程式和支援的實用工具參考訊息。這些指令只能在資料庫伺服器所在的主機上有效運行。[PostgreSQL 用戶端工具](https://docs.postgresql.tw/13/reference/client-applications)中列出了其他實用工具。

[initdb](https://www.postgresql.org/docs/current/app-initdb.html) — create a new PostgreSQL database cluster

[pg\_archivecleanup](https://www.postgresql.org/docs/current/pgarchivecleanup.html) — clean up PostgreSQL WAL archive files

[pg\_checksums](https://www.postgresql.org/docs/current/app-pgchecksums.html) — enable, disable or check data checksums in a PostgreSQL database cluste

[pg\_controldata](https://www.postgresql.org/docs/current/app-pgcontroldata.html) — display control information of a PostgreSQL database cluster

[pg\_ctl](https://www.postgresql.org/docs/current/app-pg-ctl.html) — initialize, start, stop, or control a PostgreSQL server

[pg\_resetwal](https://www.postgresql.org/docs/current/app-pgresetwal.html) — reset the write-ahead log and other control information of a PostgreSQL database cluster

[pg\_rewind](https://www.postgresql.org/docs/current/app-pgrewind.html) — synchronize a PostgreSQL data directory with another data directory that was forked from it

[pg\_test\_fsync](https://www.postgresql.org/docs/current/pgtestfsync.html) — determine fastest `wal_sync_method` for PostgreSQL

[pg\_test\_timing](https://www.postgresql.org/docs/current/pgtesttiming.html) — measure timing overhead

[pg\_upgrade](https://www.postgresql.org/docs/current/pgupgrade.html) — upgrade a PostgreSQL server instance

[pg\_waldump](https://www.postgresql.org/docs/current/pgwaldump.html) — display a human-readable rendering of the write-ahead log of a PostgreSQL database cluster

[postgres](https://www.postgresql.org/docs/current/app-postgres.html) — PostgreSQL database server

[postmaster](https://www.postgresql.org/docs/current/app-postmaster.html) — PostgreSQL database server