一、使用以下的命令清理了空间：

1.cd/orabak
2.find.-typef-mtime+30-execrm-rf{}\;

二、然后开始使用rman备份的脚本进行备份，备份到最后出现以下报错

-------------------------------------------------------------------------------------------
archivelogfilename=/oralog/1_20800_812554797.dbfrecid=20799stamp=839154512
archivelogfilename=/oralog/1_20801_812554797.dbfrecid=20800stamp=839154513
releasedchannel:ch1
RMAN-00571:===========================================================
RMAN-00569:===============ERRORMESSAGESTACKFOLLOWS===============
RMAN-00571:===========================================================

RMAN-03009:failureofbackupcommandonch1channelat02/10/201410:33:46
ORA-19571:archived-logrecid19009stamp837863118notfoundincontrolfile
-------------------------------------------------------------------------------------------

三、分析及处理过程

1、当手工删除了归档日志以后，Rman备份会检测到日志缺失，从而无法进一步继续执行。

所以此时需要手工执行crosscheck过程，之后Rman备份可以恢复正常。

2、Crosscheck日志

$rmantarget/
RMAN>crosscheckarchivelogall;#Oracle9i及以后的版本用crosscheckarchivelogall;
RMAN>changearchivelogallcrosscheck;#Oracle8i中用changearchivelogallcrosscheck;

3、再次运行备份脚本

--
archivelogfilename=/oralog/1_20887_812554797.dbfrecid=20886stamp=839198925archivelogfilename=/oralog/1_20888_812554797.dbfrecid=20887stamp=839198982archivelogfilename=/oralog/1_20889_812554797.dbfrecid=20888stamp=839199982archivelogfilename=/oralog/1_20890_812554797.dbfrecid=20889stamp=839199982Finishedbackupat10-FEB-14
Startingbackupat10-FEB-14
channelch1:startingfulldatafilebackupsetchannelch1:specifyingdatafile(s)inbackupsetincludingcurrentcontrolfileinbackupsetchannelch1:startingpiece1at10-FEB-14channelch1:finishedpiece1at10-FEB-14piecehandle=/orabak/control_11839200079688tag=TAG20140210T230759comment=NONEchannelch1:backupsetcomplete,elapsedtime:00:00:01Finishedbackupat10-FEB-14
releasedchannel:ch1
--
完成

4、参考资料

http://www.eygle.com/archives/2004/12/rman_crosscheck.html

5、rman的备份脚本

run{
allocatechannelch1devicetypeDISK;
backupfullfilesperset50
databaseformat'/orabak/full_%c_%p_%t_5s';
sql'altersystemarchivelogcurrent';
backupfilesperset50archivelogall
format'/orabak/arch%c%p%t%s'deleteinput;
backupcurrentcontrolfile
format'/orabak/control_%c%p%t%s';
releasechannelch1;
}