Home Database Mysql Tutorial 归档日志(下)

归档日志(下)

Jun 07, 2016 pm 04:05 PM
archive list log sql Archive log Check

1 sql archive log list; #查看是不是归档方式 2 sql alter system set log_archive_start=true scope=spfile; #启用主动归档 sql alter system set log_archive_dest='location=/oracle/ora9/oradata/arch' scope=spfile; #设置归档路径 sql alter system s

1 sql> archive log list; #查看是不是归档方式
2 sql> alter system set log_archive_start=true scope=spfile; #启用主动归档
sql> alter system set log_archive_dest='location=/oracle/ora9/oradata/arch' scope=spfile;
#设置归档路径
sql> alter system set log_archive_dest_1='location=/oracle/ora9/oradata/arch1' scope=spfile;
sql> alter system set log_archive_dest_2='location=/oracle/ora9/oradata/arch2' scope=spfile;
#如果归档到两个位置,则可以通过上边方法实现
sql> alter system set log_archive_format='arch_%d_%t_%r_%s.log' #设置归档日记款式
3 sql> shutdown immediate;
4 sql> startup mount; #打开控制文件,不打开数据文件
5 sql> alter database archivelog; #将数据库切换为归档模式
6 sql> alter database open; #将数据文件打开
7 sql> archive log list; #查看此时是否处于归档模式
8 查询以确定数据库位于archivelog模式中且归档过程正在运行
sql> select log_mode from v$database;
sql> select archiver from v$instance;
9 日志切换
sql> alter system switch logfile;
10 这次日志切换将归档写到两个目标地,

1 使用ARCHIVE LOG LIST命令可以显示日志操作模式,归档位置,自动归档机器要归档的日志序列号等信息.
archive log list;

2 检查当前日志操作模式
SELECT log_mode from v$database;

3 打开或关闭归档日志
shutdown immediate;
startup monut;
alter database noarchivelog/archivelog ;
alter system set log_archive_dest='/ora_arch' scope=spfile sid='ora11g1';
alter database open;
SQL> alter system set db_recovery_file_dest='' scope=both;
SQL> alter system set log_archive_dest_1='LOCATION=/ora_arch' scope=both;

4 初始化参数LOG_ARCHIVE_FORMAT用于指定归档日志的文件名格式
show parameter log_archive_format; --%t_%s_%r.dbf

5 使用LOG_ARCHIVE_DEST配置归档位置
show parameter LOG_ARCHIVE_DEST;
ALTER SYSTEM SET log_archive_dest='/ora_arch';

6 查看归档日志路径状态信息
select dest_name,destination,status,error from v$archive_dest;

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