1，查詢oracle最大進程數(shù)
select count(*) from v$process
2攘已，查詢當前連接的進程數(shù)
SELECT NAME from v$parameter where name = 'processes'
3，查看在線用戶
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;
4，修改oracle支持的最大進程數(shù)
alter system set processes = 300 scope = spfile;
