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HomeDatabaseMysql TutorialOracle 10g参数调整(processes和sga)

- 1.Oracle连接数调整 Oracle连接数默认为150,通过一下设置把oracle的连接数调整到500 用sys,以sysdba权限登录数据库(推荐使用PL/SQL) 以下操作请在Command Window下执行 SQL show parameter processes; NAME TYPE VALUE --------------------------------

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1.Oracle连接数调整
Oracle连接数默认为150,通过一下设置把oracle的连接数调整到500

用sys,以sysdba权限登录数据库(推荐使用PL/SQL)
以下操作请在Command Window下执行
SQL> show parameter processes;

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
aq_tm_processes                      integer     0
db_writer_processes                  integer     1
gcs_server_processes                 integer     0
job_queue_processes                  integer     10
log_archive_max_processes            integer     2
processes                            integer     150

SQL> alter system set processes=500 scope = spfile;

System altered

SQL> show parameter processes;

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
aq_tm_processes                      integer     0
db_writer_processes                  integer     1
gcs_server_processes                 integer     0
job_queue_processes                  integer     10
log_archive_max_processes            integer     2
processes                            integer     150

SQL> create pfile from spfile;

Done

重新启动下Oracle数据库(即oracle服务)

重启好后,用sys,以sysdba权限登录数据库
在Command Window下执行
SQL> show parameter processes;

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
aq_tm_processes                      integer     0
db_writer_processes                  integer     1
gcs_server_processes                 integer     0
job_queue_processes                  integer     10
log_archive_max_processes            integer     2
processes                            integer     500

查看你这一行数据
processes                            integer     500
即表明数据库的连接数被成功修改为500
2.调整Oracle数据库的sga(相关参数的设置与服务器的物理内存有关,下面参数适用内存为2G的服务器,如果内存为其他值的请与开发这边联系,确定具体的参数值)
用sys,以sysdba权限登录数据库(推荐使用PL/SQL)
以下操作请在Command Window下执行


--要动态修改一定要用spfile启动。如果现在是用pfile启动,可以这样切换成spfile启动:
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--create spfile from pfile;
--shutdown immediate;
--startup;
--用show parameter spfile 查看如果values对应有值,表示是spfile启动的。否则就是pfile启动的。


SQL> show parameter sga;

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
lock_sga                             boolean     FALSE
pre_page_sga                         boolean     FALSE
sga_max_size                         big integer 164M
sga_target                           big integer 0

SQL> show parameter statistics_level;

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
statistics_level                     string      TYPICAL

保证STATISTICS_LEVEL 参数设置为 TYPICAL (the default) 或者 ALL

如果不是TYPICAL 或者 ALL,那么请执行
SQL> alter system set statistics_level = TYPICAL;

System altered

SQL> commit;

Commit complete

SQL> alter system set sga_max_size = 800m scope=spfile;

System altered

SQL> commit;

Commit complete

至此请重新启动下Oracle数据库(即oracle服务)

重启好后,用sys,以sysdba权限登录数据库
在Command Window下执行
SQL> show parameter sga;

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
lock_sga                             boolean     FALSE
pre_page_sga                         boolean     FALSE
sga_max_size                         big integer 800M
sga_target                           big integer 0

SQL> alter system set sga_target = 700m;

SQL> commit;

Commit complete

完成所有操作后,完成对Oracle数据库sga的调整
Statement
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