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...
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...
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...
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" ...
# 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 ...
2024-05-13 16:06:59.395 CST [2449984] LOG: database system is ready to accept connections done server started 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. PG数据库在成功启动之后,我们可以在数据目录查询到主进程文件postmaster.pid。
Closes all active connections toward the PostgreSQL server, after waiting for the queries to complete Pauses any new connection coming from the client When the paused option is reset to false, the operator invokes the RESUME command in PgBouncer, reopening the taps toward the PostgreSQL service defi...
Once data transfer is complete, remote agents are terminated and SSH connections are closed. If an error condition is encountered by a remote agent, then all agents are terminated and error details are reported by the main pg_probackup process, which exits with an error. Compression is alway...
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...