怎么修改oracle的processes值

alter system set processes=数值 scope=spfile;

select b.MACHINE, b.PROGRAM, b.USERNAME, count(*) from v$process a, v$session b where a.ADDR = b.PADDR and b.USERNAME is not null group by b.MACHINE, b.PROGRAM, b.USERNAME order by count(*) desc

在 oracle中，要经常查看process: 查看ORACLE最大进程数： SQL> select count(*) from v$session #连接数 SQL> Select count(*) from v$session where status='ACTIVE'　#并发连接数 SQL> show parameter processes #最大连接 SQL> alter system set processes = value scope = spfile;重启数据库 #修改连接 unix 1个用户session 对应一个操作系统 process 而 windows体现在线程 ------------------------------------------------------------------------------ 修改ORACLE最大进程数： 使用sys，以sysdba权限登录： SQL> show parameter processes; NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ aq_tm_processes integer 1 db_writer_processes integer 1 job_queue_processes integer 10 log_archive_max_processes integer 1 processes integer 150 SQL> alter system set processes=300 scope = spfile; 系统已更改。 SQL> show parameter processes; NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ aq_tm_processes integer 1 db_writer_processes integer 1 job_queue_processes integer 10 log_archive_max_processes integer 1 processes integer 150 SQL> create pfile from spfile; 文件已创建。 重启数据库， SQL> show parameter processes; NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ aq_tm_processes integer 1 db_writer_processes integer 1 job_queue_processes integer 10 log_archive_max_processes integer 1 processes integer 300 还有可以查询 select sessions_highwater from v$license; sessions_highwater 记录的是数据库会话曾经达到的最大值 查询数据库自启动以来最大的并发数量 select * from v$license

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;