归档文件管理
oracle归档文件，常常出现爆满或者挂载不上，这里简单介绍一例爆满的案例。
备份归档文件：Backup archivelog all；
备份归档日志
1、sql>alter system archive logcurrent; 归档一下当前日志
2、Sql>show parameter archive; 查看归档目录
3、Rman>backup archivelog all; 备份归档
Rman>backup archivelog all delete allinput； 备份完删除归档
Rman>backup database plus archivelog； 备份数据库和归档日志
归档文件管理
SQL> select * from v$log; 归档状态
GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARC STATUS
---------- ---------- ---------- -------------------- --- ----------------
FIRST_CHANGE# FIRST_TIME
1 1 5638 52428800 1 NO INACTIVE 1.2895E+13 26-JUL-14
2 1 5639 5242880 1 NO CURRENT 1.2895E+13 26-JUL-14
4 1 5635 10485760 1 NO INACTIVE 1.2895E+13 25-JUL-14
SQL> select * from v$recovery_file_dest; 归档大小
NAME SPACE_LIMIT SPACE_USED SPACE_RECLAIMABLE NUMBER_OF_FILES
----------- ---------- --------------------------------
/home/oracle/flash_recovery_area 21474836482133713408 0 23
SQL>select * from v$flash_recovery_area_usage; 空间使用，归档备份接近100%
FILE_TYPE PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE NUMBER_OF_FILES
------------ ------------------------------------------- ---------------
CONTROLFILE 0 0 0
ONLINELOG 4.88 0 1
ARCHIVELOG 27.62 0 19
BACKUPPIECE 66.86 0 3
IMAGECOPY 0 0 0
FLASHBACKLOG 0 0 0
6 rows selected.
SQL> alter system set db_recovery_file_dest_size=10g;
System altered.
SQL> select * from v$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; 备份数据库和归档日志，同时删除已备份的归档日志
Rman>backup archivelog from sequence 79until sequance 82; 根据序列号
Rman>backup archivelog from time “sysdate-15”until time “sysdate-7”；备份15天前到7天前归档日志
4、sql>alter system archive logcurrent; 再次做日志归档，归档期间日志
Rman>list archivelog all;
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