今天，同事突然让我创建一个索引，说他创建不上。我拿过来一看，语句很 简单：create index IDX_AQ_NEFILTER on AQ_NEFILTER (INT_ID);。可是一执行就报错。错误信息：
ORA-14452: attempt to create, alter or drop an index on temporary table already in use
经查，该错误的解释为：
Cause: An attempt was made to create, alter or drop an index on temporary table which is already in use.
Action: All the sessions using the session-specific temporary table have to truncate table and all the transactions using transaction specific temporary table have to end their transactions.
因为表AQ_NEFILTER 为临时表，而且有其他session正在使用。
处理步骤：
1、先从user_objects中查询到该表的object_id:
select object_id from user_objects where object_name=upper('aq_nefilter');
2、根据查到的object_id知道使用该表的session：
select * from v$lock where id1=&object_id;
3、在从v$session视图中查到该session的SID和SERIAL#：
select * from v$session where sid=181;
4、杀掉这些进程:
alter system kill session '1591,35646';
5、重新创建索引（4，5两步一定要快，否则，刚结束一个session，又有新的session使用该表了）：
create index IDX_AQ_NEFILTER on AQ_NEFILTER (INT_ID);
至此，已经创建成功。不过，这个过程中我有个疑问，v$lock 视图中的id1字段是什么意思？和user_objects 视图中的object_id字段是对应的么？哪位看过了给解释下？