Set Archive mode (Mount status)
ALTER database ARCHIVELOG;
//Close the databaseshutdownImmediate//start Database to mount State startup MountAlter DatabaseArchivelog;//View archive Status ArchiveLoglist; SQL>ArchiveLoglist; database log mode archive Mode AutoArchive enable archive endpoint use_db_recovery_file_dest oldest online log sequence1next archived log sequence2Current log sequence2//Open DatabaseAlter Database Open
Toggle Log
ALTER system SWITCH logfile;
Sql>ArchiveLoglist; database log mode archive Mode AutoArchive enable archive endpoint use_db_recovery_file_dest oldest online log sequence1next archived log sequence2Current log sequence2SQL> Altersystem switch logfile; SQL>ArchiveLoglist; database log mode archive Mode AutoArchive enable archive endpoint use_db_recovery_file_dest oldest online log sequence1next archived log sequence3Current log sequence3SQL> Altersystem switch logfile; SQL>ArchiveLoglist; database log mode archive Mode AutoArchive enable archive endpoint use_db_recovery_file_dest oldest online log sequence2next archived log sequence4Current log sequence4