Oracle amended to archive mode

1, modify the parameters
- LOG_ARCHIVE_DEST_1 = 'LOCATION = D: \ App \ Administrator \ Arch'
- LOG_ARCHIVE_FORMAT the ARC% of S_% =% T R. default being so
- show parameter log_archive_format;

alter system set log_archive_dest_1='location=D:\app\Administrator\arch'

2, when the database instance

shutdown immediate

3, the state started to mount

startup mount

4, modified to archive mode

alter database archivelog;

5. Start the database

alter database open;

Next, you should back up a database, and set up an archive backup policy, archive logs to prevent excessive