SHOW max_connections; 查看当前连接数: sql SELECT COUNT(*) FROM pg_stat_activity; 终止连接: 如果你需要终止某个连接,可以使用pg_terminate_backend()函数。传入要终止连接的pid(进程ID)即可: sql SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE pid = <要终止的 pid>; 或者...
Could you check what is your thread-pool-size in domain.xml? The default value of max-thread-pool-size is 200. If it is set to a low value, you might see only those number of active connections to postgres. Alternatively, you could set the max-pool-size and steady-pool-size to the...
修改日志格式位csv格式 # 查看日志输出位置变量postgres=# show log_destination;# vi postgresql.conflog_destination ='csvlog'logging_collector = on log_directory ='log'log_filename ='postgresql-%Y-%m-%d_%H%M%S.log'# 热加载配置pg_ctl reload pg_ctl 管理数据库实例 ~]$ pg_ctl --helppg_ctl i...
Here is an overview of the most important changes for monitoring tools: pg_stat_statements gets new columns min_time, max_time, mean_time & stddev_time - making it much easier to identify outliers in the query statistics New pg_stat_ssl view that shows active SSL connections…Continue ...
远程登陆 psql -h 主机 -U 用户 -p端口 -W -d 数据库 #-W表示密码,例如:psql -h 192.168.137.3 -U postgres -p 5432 -W -d postgres 远程执行命令 psql -h 192.168.137.3 -p 5432 postgres postgres -A -c "select *fromtest limit 10" ...
如果max_connections=8,superuser_reserved_connections=3, 前面5次无论我使用什么用户登录都算普通用户登录次数,比如我先用超级用户postgres连续登陆5次,保持连接,第6次用普通用户是无法登陆,但是用超级用户是可以登录的。 测试过程 #设置参数大小 postgres=# show max_connections ; ...
# 最大连接数,生产建议10000 mydb=# show max_connections; # 数据缓冲区,设置为物理内存的25% mydb=# show shared_buffers; # 估计可以做磁盘缓存的内存大小,通常往大了的调,可以提高性能。 mydb=# show effective_cache_size; # 维护任务的内存,增加这个对修改表结构,回收脏数据,创建索引有明显性能提升 ...
如果max_connections=8,superuser_reserved_connections=3, 前面5次无论我使用什么用户登录都算普通用户登录次数,比如我先用超级用户postgres连续登陆5次,保持连接,第6次用普通用户是无法登陆,但是用超级用户是可以登录的。 测试过程 #设置参数大小 postgres=# show max_connections ; ...
If you're in the high 10s or if you have more idle than active connections, pooling might be a good option. Need more Postgres tips? We have an awesome tips page we’ve been building out. We also just started a new Discord channel to chat about Postgres, stop by, say hi, and let...
获取当前网络配置你可以通过 NetworkManager 的 GUI 来了解本机的网络连接: Getting Network Info on Linux 也可以使用如下命令行来查看: $ nmcli...con show$ nmcli connection show --active View the connections with nmcli 我有一个使用网卡 eno1 的 “有线连接”。...现在你可以使用 KVM/VirtualBox/...