oracle归档日志

oracle归档日志

1.查看空间占用率：select * from v$flash_recovery_area_usage; 
2.查看归档日志的存放地址：select * from v$recovery_file_dest; 
3.查看所有归档，未删除的归档日志 ：
select count(*) from v$archived_log where archived='YES' and deleted='NO';
4.查看空间占用率，如果 ARCHIVED LOG 超过90%，Oracle随时有宕机的危险：
select * from v$flash_recovery_area_usage; 
5.查看归档日志大小及使用情况：select * from v$recovery_file_dest;
6.查看现有日志 ：select group#, bytes, status from v$log;
7.列出所有归档redo日志文件的顺序和产生的时间：
select sequence#,first_time from v$loghist;
8.查看v$archive_log：select * from v$archived_log; 
9.查看所有归档，未删除的归档日志：
select count(*) from v$archived_log where archived='YES' and deleted='NO'; 

oracle数据库怎么进入rman
在sql> 的命令下输入以下命令，回车：
（本地）SQL> $ rman target /
（远程）SQL> $ rman target USERNAME/PASSWORD@orcl
（命令行）输入 rman 回车即可
1.列出所有的归档日志文件: RMAN>list archivelog all;    
2.与物理归档日志文件保持同步，之前移走了一部分文件，因此执行此命令后会
在/oracle目录下找不到的归档日志标记为expired
RMAN>crosscheck archivelog all;
3.列出所有expired（过期）的归档日志文件，此时你就可看到移走的归档日志文件均被标记为expired
 RMAN>list expired archivelog all;
4.删除所有过期归档日志: RMAN>delete expired archivelog all;
5.删除三天之前的归档日志:RMAN>delete archivelog until time 'sysdate-3';

1.查看规定日志是否打开
 select log_mode,force_logging from v$database; 
2.开启归档日志
  关闭数据库重新启动到mount阶段
  shutdown immediate
  startup mount
  alter database archivelog;
  alter database force logging;

3.归档日志自动备份删除脚本
11G RMANBAK 脚本
vi /u01/rmanbak/rmanbak.sh
#!/bin/bash

. ~/.bash_profile

echo -------------------------start-----------------------;date
rman target/<<EOF
backup as compressed backupset database include current controlfile format '/u01/rmanbak/full_%U.bak';
delete  noprompt obsolete;
delete noprompt force archivelog all completed before 'sysdate-7';
exit;
EOF
echo -------------------------end-----------------------;date

crontab -e

0 0 * * * /u01/rmanbak/rmanbak.sh > rmanbak.log 2>&1