instance和media损坏恢复

1.相关视图

v$sga

v$sgastat

v$instance

v$process

v$bgprocess

v$database

v$datafile

v$instance_recovery

v$fast_start_servers

v$fast_start_transactions

2.参数

fast_start_mttr_target

log_checkpoint_timeout(9i前)

log_checkpoint_interval(9i前)

recovery_parallelism(并发数，往datafile中的并发数)

fast_start_parallel_rollback(回滚参数)

3.更改数据库为归档模式

1)shutdown immediate,

2)startup mount

3)alter database archivelog

4)alter database open

5)full database backup(冷备份)

4.显示环境变量

env|grep oracle

export oracle_SID=denver

5.查看服务器模式

archive log list

自动归档

LOG_ARCHIVE_START=TRUE

手动归档

LOG_ARCHIVE_START=FALSE

LOG_ARCHIVE_MAX_PROCESS=N(最大为10)

6.启动归档

alter system archive log start to 'c:/u04/oracle/test/log';

停止自动归档

alter system archive log stop

LOG_ARCHIVE_START=FALSE

7.测试

alter system swith logfile;

查看数据

8.设置归档路径

log_archive_dest_n ="LOCATION=/archive1" mandatory

log_archive_dest_n ="SERVICE=standby_db1" optionnal ropen= 600

例：

alter system set log_archive_dest_1 = "location=/u01/admin/den/test/" scope=both;

alter system set log_archive_format="kkk%S.arc" scope=spfile;

9.相关视图

v$archived_log

v$archive_log

v$log_history

v$database

v$archive_processes