oracle歸檔文件管理

歸檔文件管理

oracle歸檔文件，常常出現爆滿或者掛載不上，這里簡單介紹一例爆滿的案例。

備份歸檔文件：Backup archivelog all；

備份歸檔日志

1、sql>alter system archive logcurrent;   歸檔一下當前日志

2、Sql>show parameter archive;          查看歸檔目錄

3、Rman>backup archivelog all;           備份歸檔

Rman>backup archivelog all delete allinput；    備份完刪除歸檔

Rman>backup database plus archivelog；  備份數據庫和歸檔日志

歸檔文件管理

SQL> select * from v$log;   歸檔狀態

   GROUP#    THREAD#  SEQUENCE#     BYTES    MEMBERS ARC STATUS

---------- ---------- ---------- -------------------- --- ----------------

FIRST_CHANGE# FIRST_TIME

 1       1    5638  52428800   1 NO INACTIVE  1.2895E+13 26-JUL-14

 2       1    5639   5242880  1 NO CURRENT  1.2895E+13 26-JUL-14

 4       1   5635  10485760  1 NO INACTIVE  1.2895E+13 25-JUL-14

SQL> select * from v$recovery_file_dest; 歸檔大小

NAME SPACE_LIMIT SPACE_USED SPACE_RECLAIMABLE NUMBER_OF_FILES 

----------- ---------- --------------------------------

/home/oracle/flash_recovery_area   21474836482133713408                 0               23

SQL>select * from v$flash_recovery_area_usage; 空間使用，歸檔備份接近100% 

FILE_TYPE   PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE NUMBER_OF_FILES

------------ ------------------------------------------- ---------------

CONTROLFILE                 0                             0                0

ONLINELOG                  4.88                     0                1

ARCHIVELOG              27.62                     0             19

BACKUPPIECE             66.86                     0                3

IMAGECOPY                    0                             0                0

FLASHBACKLOG                       0                             0                0

6 rows selected.

SQL> alter system set db_recovery_file_dest_size=10g;

System altered.

SQL> select * from v$recovery_file_dest;

NAME SPACE_LIMIT SPACE_USED SPACE_RECLAIMABLE NUMBER_OF_FILES

----------- ---------- --------------------------------

/home/oracle/flash_recovery_area  1.0737E+10 2234790400                    0              26

SQL> select * from v$flash_recovery_area_usage;

FILE_TYPE   PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE NUMBER_OF_FILES

------------ ------------------------------------------- ---------------

CONTROLFILE                 0                             0                0

ONLINELOG                   .98                     0                1

ARCHIVELOG               6.47                     0             22

BACKUPPIECE             13.37                     0                3

IMAGECOPY                    0                             0                0

FLASHBACKLOG                       0                             0                0

6 rows selected.

Rman>backup database plus archivelogdelete input; 備份數據庫和歸檔日志，同時刪除已備份的歸檔日志

Rman>backup archivelog from sequence 79until sequance 82; 根據序列號

Rman>backup archivelog from time “sysdate-15”until time “sysdate-7”；備份15天前到7天前歸檔日志

4、sql>alter system archive logcurrent;  再次做日志歸檔，歸檔期間日志

 Rman>list archivelog all;