SQL> startup mount
ORACLE instance started.
Total System Global Area 608174080 bytes
Fixed Size 1220844 bytes
Variable Size 167776020 bytes
Database Buffers 436207616 bytes
Redo Buffers 2969600 bytes
Database mounted.
SQL>
SQL>
SQL> alter database archivelog;
Database altered.
SQL> alter database open;
Database altered.
SQL>
SQL> select log_mode from v$database;
LOG_MODE
------------
ARCHIVELOG
SQL>
ARCHIVE LOG MULTIPLEXING
IN ORACLE 10g PROVIDE 10 DIFFERENT DESTINATION TO KEEP YOUR ARCHIVE LOG
SQL>alter system set log_archive_dest_1='LOCATION=/oracle/archive';
for remove location
SQL>alter system set log_archive_dest_1='';
SQL>alter system archive log current;
v$archived_log
SQL> shutdown immediate;
SQL> startup mount;
SQL> alter database noarchivelog;
SQL> alter database open;
ORACLE instance started.
Total System Global Area 608174080 bytes
Fixed Size 1220844 bytes
Variable Size 167776020 bytes
Database Buffers 436207616 bytes
Redo Buffers 2969600 bytes
Database mounted.
SQL>
SQL>
SQL> alter database archivelog;
Database altered.
SQL> alter database open;
Database altered.
SQL>
SQL> select log_mode from v$database;
LOG_MODE
------------
ARCHIVELOG
SQL>
ARCHIVE LOG MULTIPLEXING
IN ORACLE 10g PROVIDE 10 DIFFERENT DESTINATION TO KEEP YOUR ARCHIVE LOG
SQL>alter system set log_archive_dest_1='LOCATION=/oracle/archive';
for remove location
SQL>alter system set log_archive_dest_1='';
SQL>alter system archive log current;
v$archived_log
///DISABLE ARCHIVE LOG MODE
SQL> connect sys/chaya as sysdbaSQL> shutdown immediate;
SQL> startup mount;
SQL> alter database noarchivelog;
SQL> alter database open;