Oracle数据库归档模式设置
在单击节点或本机机器上进行设置 1 sqlgt; archive log list; #查看是否是归档方式 2 sqlgt; alter system set log_ar
在单击节点或本机机器上进行设置
1 sql> archive log list; #查看是否是归档方式
2 sql> alter system set log_archive_start=true scope=spfile; #启用自动归档
sql> alter system set log_archive_dest_1='location=H:archivelogarch1' scope=spfile;
#设置归档路径1
sql> alter system set log_archive_dest_2='location=H:archivelogarch2' scope=spfile;
#设置归档路径2,一般情况下将路径2存放到其它盘中。
sql> alter system set log_archive_format='arch_%d_%t_%r_%s.log'
#设置归档日志格式
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; #查看此时便处于归档模式
8 查询以确定数据库位于archivelog模式中且归档进程正在进行
sql> select log_mode from v$database;
sql> select archiver from v$instance;
9 执行一次日志切换
sql> alter system switch logfile;
10 此次日志切换将归档写到两个目的地,即第二步的H:archivelogarch1和H:archivelogarch2,,如果希望对此确认,在Oracle环境中运行如下查询:
sql> select name from v$archived_log;
然后在操作系统中确认查询所列出的文件
二 设置非归档方式
1 sql> archive log list; #查看是否是归档方式
2 sql> alter system set log_archive_start=false scope=spfile; #禁用自动归档
3 sql> shutdown immediate;
4 sql> startup mount; #打开控制文件,不打开数据文件
5 sql> alter database noarchivelog; #将数据库切换为非归档模式
6 sql> alter database open; #将数据文件打开
7 sql> archive log list; #查看此时便处于非归档模式
三 归档相关命令
archive log stop;
archive log start;
archive log list;
show parameters;
show parameters log_archive_start;
show parameters log_archive_max_process; #归档进程数
alter system set log_archive_max_process=5; #将归档进程数改为5
select * from v$bgprocess; #查看后台进程

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