Oracle sql 创建表空间 查询用户连接数

创建表空间： CREATE SMALLFILE TABLESPACE "ttt" DATAFILE 'd:\ttt.ora' SIZE 500M AUTOEXTEND ON NEXT 100M MAXSIZE UNLIMITED NOLOGGING EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO

查询用户连接数： select b.MACHINE, b.PROGRAM , count(*) from v$process a, v$session b where a.ADDR = b.PADDR and b.USERNAME is not null group by b.MACHINE , b.PROGRAM order by count(*) desc;