1. >shutdown immediate; (把database停了)
  2.  
  3. >startup mount; (把database重開)
  4.  
  5. >alter system enable restricted session;
  6.  
  7. >alter system set job_queue_processes=;
  8.  
  9. >alter system set aq_tm_processes=;
  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; (重開正常oracle)

引用自  :我老婆是大熊貓

  url  :  https://www.cnblogs.com/yph5233/p/8994791.html

建立使用者和密碼:

  1. sqlplus /nolog;
  2. conn / as sysdba;
    建立新使用者:SQL> create user pkr identified by manager; 
    賦許可權:SQL> grant CREATE SESSION to pkr;