# docker 直接管理员进入 psql -U postgres # 查看连接数 SELECT COUNT(*) AS connection_count FROM pg_stat_activity WHERE datname = '数据库名字'; # 删除所有连接 SELECT pg_terminate_backend(pg_stat_activity.pid) FROM pg_stat_activity WHERE datname = '数据库名字' AND pid <> pg_backend_pid(); # 重命名 ALTER DATABASE "原本名字" rename TO "新名字";