1.改變非歸檔模式到歸檔模式:
1)SQL> conn / as sysdba (以DBA身份鏈接數據庫)
2)SQL> shutdown immediate; (當即關閉數據庫)
3)SQL> startup mount (啓動實例並加載數據庫,但不打開)
4)SQL> alter database archivelog; (更改數據庫爲歸檔模式)
5)SQL> alter database open; (打開數據庫)
6)SQL> alter system archive log start; (啓用自動歸檔)
7)SQL> exit (退出)
歸檔進程(archiver process)
校檢點進程(Checkpoint Process)
數據庫書寫進程(database writer process)
做業隊列進程(job queue process)
日誌書寫進程(log writer process)
進程監控進程(process monitor process)
隊列監控進程(queue monitor process)
恢復進程(recover process)
系統監控進程(system monitor process)
其餘後臺進程(other background process)
select * from v$bgprocess where PADDR != '00' order by NAME; // 查看oracle的後臺進程
select * from v$SESSION WHERE type = 'USER';// 查看數據庫中的會話
select SID,SERIAL#,STATUS,SERVER FROM V$session where username = 'JB'; //查看會話的狀態