show parameter sga_max_size; --查看sga最大多少
show parameter sga_target; --查看sga_target
SQL> show sga
show parameter sga_max_size; --查看sga最大多少
show parameter sga_target; --查看sga_target
SQL> show sga
Total System Global Area 2602007792 bytes
Fixed Size 740592 bytes
Variable Size 335544320 bytes
Database Buffers 2264924160 bytes
Redo Buffers 798720 bytes
SQL> alter system set sga_max_size=500m scope=spfile;
System altered.
alter system set sga_target=500m scope=spfile;
System altered.
SQL> shutdown immediate;
SQL> startup
SQL> show sga
Total System Global Area 5252811728 bytes
Fixed Size 744400 bytes
Variable Size 2986344448 bytes
Database Buffers 2264924160 bytes
Redo Buffers 798720 bytes
限制用户连接数:
先创建一个PROFILE
create profile ses_conn limit sessions_per_user n; n为最大连接数。
然后将该PROFILE付给需要限制的用户。alter user xxx profile ses_conn;
最后别忘了确认RESOURCE_LIMIT参数已设为TRUE。
如果没有,用
alter system set resource_limit=TRUE;
如果要删除限制,删除Profile即可
drop profile ses_conn cascade;
Total System Global Area 2602007792 bytes Fixed Size 740592 bytes Variable Size 335544320 bytes Database Buffers 2264924160 bytes Redo Buffers 798720 bytes SQL> alter system set sga_max_size=500m scope=spfile; System altered. alter system set sga_target=500m scope=spfile; System altered. SQL> shutdown immediate; SQL> startup SQL> show sga Total System Global Area 5252811728 bytes Fixed Size 744400 bytes Variable Size 2986344448 bytes Database Buffers 2264924160 bytes Redo Buffers 798720 bytes 限制用户连接数: 先创建一个PROFILE create profile ses_conn limit sessions_per_user n; n为最大连接数。 然后将该PROFILE付给需要限制的用户。alter user xxx profile ses_conn; 最后别忘了确认RESOURCE_LIMIT参数已设为TRUE。 如果没有,用 alter system set resource_limit=TRUE; 如果要删除限制,删除Profile即可 drop profile ses_conn cascade;