1,查询oracle最大进程数
select count(*) from v$process
2,查询当前连接的进程数
SELECT NAME from v$parameter where name = 'processes'
3,查看在线用户
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支持的最大进程数
alter system set processes = 300 scope = spfile;
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