会话按状态分组统计数
SYS@hx1> select status,count(*) from v$session d group by d.status;
STATUS COUNT(*)
-------- ----------
ACTIVE 43
INACTIVE 3
表按用户分组统计数
SYS@hx1> select owner,count(*) from dba_tables d where d.owner in ('QIJI','BEDC') group by d.owner;
OWNER COUNT(*)
------------------------------ ----------
QIJI 2
BEDC 75
select * from gv$session d where d.machine not in ('rac6n1','rac6n2');