Enable Archiving In Oracle Database

To enable archivelog mode for oracle database:

SQL> CONN SYS AS SYSDBA
SQL> ALTER SYSTEM SET LOG_ARCHIVE_START=TRUE SCOPE=SPFILE;
SQL> ALTER SYSTEM SET LOG_ARCHIVE_DEST_1='location=C:\archive' SCOPE=SPFILE;
SQL> ALTER SYSTEM SET LOG_ARCHIVE_FORMAT='arch_%t_%s.arc' SCOPE=SPFILE;
SQL> SHUTDOWN IMMEDIATE;
SQL> STARTUP MOUNT;
SQL> ARCHIVE LOG START;
SQL> ALTER DATABASE ARCHIVELOG;
SQL> ALTER DATABASE OPEN;
SQL> ALTER SYSTEM SWITCH LOGFILE;