1.oracle打开文件句柄数

sql> select count(*) from v$open_cursor;

COUNT(*)

----------

1565

2.oracle的连接数

sql> select count(*) from v$session;

COUNT(*)

----------

86

3.当前的进程数

sql> select count(*) from v$process;

COUNT(*)

----------

89

4.数据库允许的最大进程数

sql> select value from v$parameter where name='processes';

VALUE

--------------------------------------------------------------------------------

200