修改Oracle最大连接数

修改Oracle最大连接数

1、修改Oracle最大连接数的方法
 
a、以sysdba身份登陆SQLPLUS

b、查询目前连接数

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     50
SQL> show parameter sessions

NAME                               TYPE        VALUE
---------------------------------- ----------- ------------
java_max_sessionspace_size         integer     0
java_soft_sessionspace_limit       integer     0
license_max_sessions               integer     0
license_sessions_warning           integer     0
logmnr_max_persistent_sessions     integer     1
sessions                           integer     60
shared_server_sessions             integer

c、更改系统连接数

SQL> alter system set processes=300 scope=spfile; 

System altered.


SQL> alter system set sessions=300 scope=spfile;

System altered.

d、创建pfile

     

create pfile from spfile;

e、重启Oracle服务或重启Oracle服务器

SQL> shutdown immediate;
Database closed.
Database dismounted.
ORA-00600: internal error code, arguments: [LibraryCacheNotEmptyOnClose], [], [], [], [], [], [], []
SQL> startup
ORACLE instance started.

Total System Global Area  914358272 bytes
Fixed Size                  2088184 bytes
Variable Size             549454600 bytes
Database Buffers          356515840 bytes
Redo Buffers                6299648 bytes
Database mounted.
Database opened.
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     300

2、查询Oracle游标使用情况的方法

  

select * from v$open_cursor where user_name = 'TRAFFIC'

3、查询Oracle会话的方法

  select * from v$session ;