Troubleshooting steps for Oracle pool connection request timeout

 

 

1、

Log in and copy

      
      

       
       --1、 According to the database 、 The process gets the current oracle Database connection session, Be careful username
       
       
 
       
       
select *from v$session where username='NGSOFT' and program='w3wp.exe' ORDER BY PREV_exec_start
       
       
 
       
       
--2、 Print the current number of connections , Check whether the current connection pool exceeds ,oracle Connection pool settable 1000, Be careful username
       
       
 
       
       
select count(*)from v$session where username='NGSOFT' and program='w3wp.exe' ORDER BY PREV_exec_start
       
       
 
       
       
--3、 according to sql_id obtain sql sentence 
       
       
 
       
       
select * from v$sql where sql_id='gj82qu4h997uj'
      
      
      
      

       
       
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2、

Log in and copy

      
      

       
       -- Query the connection number of the current process in the database ：
       
       
select count(*) from v$process;
       
       
-- View the number of connections to the current session of the database ：
       
       
select count(*) from v$session;
       
       
-- View the number of concurrent connections to the database ：
       
       
select count(*) from v$session where status='ACTIVE';
       
       
-- The maximum number of connections allowed to query the database ：
       
       
select value from v$parameter where name = 'processes';
       
       
-- Modify the maximum number of connections allowed in the database ：
       
       
alter system set processes = 300 scope = spfile;
       
       
-- See which users are currently using data ：
       
       
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;
       
       
 
       
       
-- Query the connection number of the current process in the database ：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)
      
      
      
      

       
       
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