删除7天前的归档日志
[root@rac3 ~]# su - oracle
[oracle@rac3 ~]$ rman target /
Recovery Manager: Release 11.2.0.3.0 - Production on Fri May 2 13:38:06 2014
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
connected to target database: HH (DBID=2971317483)
RMAN> delete archivelog all completed before 'sysdate-7';
使用这种方法删除归档日志比较慢，他是一个一个删，1年的得删半个小时到一个小时。
估计在文件系统上按目录删除会快点，再清理。
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我的参考：
sqlplus /nolog
connect / as sysdba
(2)查看数据库REDOLOG情况
select * from v$log;
(4)查看Oracle数据库后台归档服务进程
[oracle@hrmsdb ~]$ ps -ef|grep oracle
find -name flash_recovery_area
(6)查看FLASH_RECOVERY_AREA空间中各部分使用情况
SQL> select * from v$recovery_file_dest;
(7)SQL>select * from v$flash_recovery_area_usage;
发现ARCHIVELOG PERCENT_SPACE_USED已超过90%；
1.进入rman
p630_1#oracle> rman
2.连接到目标数据库
RMAN> connect target /;
3.查看所有日志情况
RMAN> list archivelog all;
4.检测归档日志
RMAN> crosscheck archivelog all;
5.删除过期的归档日志
RMAN> delete expired archivelog all;
以下命令备份日志，并删除一周前的所有日志：
BACKUP ARCHIVELOG ALL;
delete archivelog all completed before 'sysdate-7';
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参考：
ORA-00257 解决办法
http://pimg2005.blog.51cto.com/842469/857879/
ORA-00257报错解决办法
http://blog.csdn.net/bullettrain1433/article/details/20903473
如何删除Archivelog
http://www.blogjava.net/decode360/archive/2009/06/25/287747.html
ASM删除archivelog
http://biancheng.dnbcw.info/oracle/237372.html
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ASM Automatic Storage Management 自动存储管理，他是一个单独的实例，有自己的SID，有自己的文件
查看ASM的SID，+ASM1就是他的SID
[oracle@rac3 ~]$ cat /etc/oratab
+ASM1:/u01/app/11.2.0/grid:N # line added by Agent
rr:/u01/app/oracle/product/11.2.0/db_1:N # line added by Agent
查看asm进程
[oracle@rac3 ~]$ ps -ef|grep asm
用grid用户连接到asm
[root@rac3 ~]# su - grid
[grid@rac3 ~]$ sqlplus / as sysasm
SQL*Plus: Release 11.2.0.3.0 Production on Wed Apr 30 13:32:36 2014
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL> select instance_name,status from v$instance; --查看状态
INSTANCE_NAME STATUS
---------------- ------------
+ASM1 STARTED
SQL>
在这可以启动停止
ASMCMD
[root@rac3 ~]# su - grid --grid用户
[grid@rac3 ~]$ asmcmd
ASMCMD> ls
ASM_DATA/
ASM_FRA/
OCR_VOTE/
ASMCMD> cd ASM_FRA
ASMCMD> cd +ASM_FRA/HH/ARCHIVELOG/
ASMCMD> ls
2014_04_26/
2014_04_27/
2014_04_28/
ASMCMD> cd 2014_04_28/
ASMCMD> ls
thread_1_seq_5303.6076.846032419
thread_1_seq_5304.6078.846050457
thread_1_seq_5305.6082.846057975
thread_1_seq_5306.6085.846072425
thread_1_seq_5307.6087.846090029
thread_2_seq_5098.6077.846041781
thread_2_seq_5099.6079.846057963
thread_2_seq_5100.6080.846057969
thread_2_seq_5101.6081.846057973
thread_2_seq_5102.6083.846057975
thread_2_seq_5103.6084.846063413
thread_2_seq_5104.6086.846086451
ASMCMD> help
asmcmd [-V] [-v <errors|warnings|normal|info|debug>] [--privilege <sysasm|sysdba>] [-p] [command]
asmcmd_no_conn_str
Starts asmcmd or executes the command
asmcmd [-V] [-v <errors|warnings|normal|info|debug>] [--privilege <sysasm|sysdba>] [-p] [command]
The environment variables ORACLE_HOME and ORACLE_SID determine the
instance to which the program connects, and ASMCMD establishes a
bequeath connection to it, in the same manner as a SQLPLUS / AS
SYSASM. The user must be a member of the OSASM group.
Specifying the -V option prints the asmcmd version number and
exits immediately.
Specifying the -v option prints extra information that can help
advanced users diagnose problems.
Specify the --privilege option to choose the type of connection. There are
only two possibilities: connecting as SYSASM or as SYSDBA.
The default value if this option is unspecified is SYSASM.
Specifying the -p option allows the current directory to be displayed
in the command prompt, like so:
ASMCMD [+DATA/ORCL/CONTROLFILE] >
[command] specifies one of the following commands, along with its
parameters.
Type "help [command]" to get help on a specific ASMCMD command.';
commands:
--------
md_backup, md_restore
lsattr, setattr
cd, cp, du, find, help, ls, lsct, lsdg, lsof, mkalias
mkdir, pwd, rm, rmalias
chdg, chkdg, dropdg, iostat, lsdsk, lsod, mkdg, mount
offline, online, rebal, remap, umount
dsget, dsset, lsop, shutdown, spbackup, spcopy, spget
spmove, spset, startup
chtmpl, lstmpl, mktmpl, rmtmpl
chgrp, chmod, chown, groups, grpmod, lsgrp, lspwusr, lsusr
mkgrp, mkusr, orapwusr, passwd, rmgrp, rmusr
volcreate, voldelete, voldisable, volenable, volinfo
volresize, volset, volstat
ASMCMD> quit --退出