select articleid from zwgkreportinfo group by articleid having count(*)>1
delete from zwgkreportinfo;
commit;
---连接数
select count(*) from v$session;
---并发连接数
select count(*) from v$session where status='ACTIVE'
---查看oracle的最大并发数限制,可是查看v$license视图
---v$license视图:
---里面记录了Oracle最大的并发数以及当前用户的连接数,
---官方文档有如下描述:
/*This view contains information about license limits.
Column Datatype Description
SESSIONS_MAX
NUMBER
Maximum number of concurrent user sessions allowed for the instance
SESSIONS_WARNING
NUMBER
Warning limit for concurrent user sessions for the instance
SESSIONS_CURRENT
NUMBER
Current number of concurrent user sessions
SESSIONS_HIGHWATER
NUMBER
Highest number of concurrent user sessions since the instance started
USERS_MAX
NUMBER
Maximum number of named users allowed for the database
*/
select * from v$license
--最大连接
show parameter processes;
--查看最大并发数,如果是0,则默认是无限制,但如果在
--在初始化文件里说明了,就以初始化文件为主
show parameter license_max_sessions
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