oracle池式连接请求超时问题排查步骤

1、

--1、根据数据库、进程获取当前oracle数据库连接session，注意username
 
select *from v$session where username='NGSOFT' and program='w3wp.exe' ORDER BY PREV_exec_start
 
--2、打印当前连接数，查看当前连接池是否超出，oracle连接池可设置1000，注意username
 
select count(*)from v$session where username='NGSOFT' and program='w3wp.exe' ORDER BY PREV_exec_start
 
--3、根据sql_id获取sql语句
 
select * from v$sql where sql_id='gj82qu4h997uj'

2、

--查询数据库当前进程的连接数：
select count(*) from v$process;
--查看数据库当前会话的连接数：
select count(*) from v$session;
--查看数据库的并发连接数：
select count(*) from v$session where status='ACTIVE';
--查询数据库允许的最大连接数：
select value from v$parameter where name = 'processes';
--修改数据库允许的最大连接数：
alter system set processes = 300 scope = spfile;
--查看当前有哪些用户正在使用数据：
select osuser,a.username,cpu_time/executions/1000000||'s',sql_fulltext,machine
　　from v$session a,v$sqlarea b
　　where a.sql_address = b.address
　　order by cpu_time/executions desc;
 
--查询数据库当前进程的连接数：host_process_id--w3wp
select count(*),host_process_id from sys.dm_exec_sessions group by host_process_id
 
 
select 'dbcc inputbuffer(' +cast(session_id as varchar) +')',session_id,last_request_start_time,login_time,last_request_end_time
 from sys.dm_exec_sessions where host_process_id='1360' order by last_request_start_time asc
 
 select * from sys.dm_exec_sessions where host_process_id='5800'
dbcc inputbuffer(51)

参考链接：https://blog.csdn.net/tiancxz/article/details/106688749?utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7EBlogCommendFromMachineLearnPai2%7Edefault-1.baidujs&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7EBlogCommendFromMachineLearnPai2%7Edefault-1.baidujs