Configure database noarchive to archive log mode

Configure 9i database noarchive to archive log mode

create a directory for archives
[satish@host satish]$cd 9i/oradata
[satish@host oradata ]$pwd
/oracle/satish/9i/oradata
[satish@host oradata]$mkdir archs
then open the parameter file and add this parameters
[satish@host oradata]$cd $ORACLE_HOME/dbs
[satish@host dbs]$vi initsatish.ora
#add this lines
log_archive_start=true
log_archive_dest='/oracle/satish/9i/oradata/archs'
log_archive_format=%s%t
#save and exit
connect to sql promt with sysdba
[satish@host satish]$sqlplus /'as sysdba'
SQL>startup mount
SQL>alter database archivelog;
SQL>alter database open;
then database will be open with archive log mod
if you want to check your database is archive mod or noarchive mod then use this command

SQL>archive log list

--satish