怎么修改oracle的processes值

alter?system?set?processes=數值?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，要經常查看process: 查看ORACLE最大進程數： SQL> select count(*) from v$session  #連接數 SQL> Select count(*) from v$session where status='ACTIVE'　#并發連接數 SQL> show parameter processes  #最大連接 SQL> alter system set processes = value scope = spfile;重啟數據庫  #修改連接 unix 1個用戶session 對應一個操作系統 process 而 windows體現在線程 ------------------------------------------------------------------------------ 修改ORACLE最大進程數： 使用sys，以sysdba權限登錄： 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; 系統已更改。 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; 文件已創建。 重啟數據庫，  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 還有可以查詢  select sessions_highwater  from v$license;  sessions_highwater 記錄的是數據庫會話曾經達到的最大值  查詢數據庫自啟動以來最大的并發數量  select * from v$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;