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监控flash_recovery_area的使用情况可以查询2个视图:
1.V$FLASH_RECOVERY_AREA_USAGE:displays usage information about flashback recovery areas
SQL> select * from v$flash_recovery_area_usage;

FILE_TYPE            PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE NUMBER_OF_FILES
-------------------- ------------------ ------------------------- ---------------
CONTROL FILE                          0                         0               0
REDO 
LOG                              0                         0               0
ARCHIVED 
LOG                      30.81                         0              61
BACKUP PIECE                          0                         0               0
IMAGE COPY                            0                         0               0
FLASHBACK 
LOG                     12.99                      8.54              70
FOREIGN ARCHIVED LOG                  0                         0               0

已选择7行。

SQL
> select sum(PERCENT_SPACE_USED) from v$flash_recovery_area_usage;

SUM(PERCENT_SPACE_USED)
-----------------------
                   43.8

2.V$RECOVERY_FILE_DEST:displays information about the disk quota and current disk usage in the flash recovery area.
SQL> select * from V$RECOVERY_FILE_DEST;

NAME                                     SPACE_LIMIT SPACE_USED SPACE_RECLAIMABLE NUMBER_OF_FILES
---------------------------------------- ----------- ---------- ----------------- ---------------
/opt/oracle/flash_recovery_area           8589934592 3762538496         733315072             131

SQL
> select round(100*(a.space_used/space_limit),2from v$recovery_file_dest a;

ROUND(100*(A.SPACE_USED/SPACE_LIMIT),2)
---------------------------------------
                                   43.8
posted on 2011-05-30 13:53 xrzp 阅读(1977) 评论(0)  编辑  收藏 所属分类: oracle-基础

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