select username,count(username) from v$session where username is not null group by username;--查询各个用户占用连接数情况
select count(*) AS JAVACOUNT from v$session where username='PCMS' and SCHEMANAME='JDBC Thin Client';--查询PCMS用户下，jdbc占用的连接数
select username,count(username) from v$session where username is not null group by username;--查询各个用户占用连接数情况
select count(*) AS JAVACOUNT from v$session where username='PCMS' and SCHEMANAME='JDBC Thin Client';--查询PCMS用户下，jdbc占用的连接数