在SQL*PLUS 中，以DBA登录
命令：
1 >shutdown immediate; (把database停了)
2
3 >startup mount; (把database重开)
4
5 >alter system enable restricted session;
6
7 >alter system set job_queue_processes=0;
8
9 >alter system set aq_tm_processes=0;
10
11 >alter database open;
12
13 >alter database character set utf8;
14
15 OR
16
17 >alter database character set internal_use utf8;
18
19 >shutdown immediate;
20
21 >startup; (重开正常oracle)