How to enable and block the Oracle archive mode of a Database

How to enable and Block Database Oracle archive mode Oracle training: Oracle archive mode the following articles mainly describe how to correctly start or block Oracle archive mode, we all know that Oracle databases run in two modes. Oracle archive mode (archivelog) and non-archive mode (noarchivelog) are the first implementation ). Www.2cto.com the Oracle archive mode can improve the recoverability of the Oracle database (tengke for ocp training). Production Databases should all run in this mode. The Archive mode should be connected to the response backup policy, only Backup policies that do not respond in archive mode can cause problems. This section briefly describes how to enable and block the Oracle archiving mode of a database. <1> shutdown normal or shutdown immediate block the database (ocm authentication) 1. oracle @ jumper oracle] $ sqlplus "/as sysdba" 2. SQL * Plus: Release 9.2.0.4.0-Production on Sat Oct 15 15:48:36 2005 3. copyright (c) 1982,200 2, Oracle Corporation. all rights reserved. 4. connected to: 5. oracle9i Enterprise Edition Release 9.2.0.4.0-Production 6. with the Partitioning option 7. JServer Release 9.2.0.4.0-Production 8. SQL 》 shutdow N immediate; 9. database closed. 10. database dismounted. 11. ORACLE instance shut down. <2> Start the database to mount status 1.sqlstartup mount; 2. ORACLE instance started. 3. total System Global Area 101782828 bytes 4. fixed Size 451884 bytes 5. variable Size 37748736 bytes 6. database Buffers 62914560 bytes 7. redo Buffers 667648 bytes 8. database mounted. <3> enable or disable the archive mode. If you want to enable the archive mode for Oracle, use www.2cto.com 1. alter database Archivelog appeal. 2. SQL alter database archivelog; 3. database altered. 4.sqlalter database open; 5. database altered. 6. SQL> archive log list; 7. database log mode Archive Mode 8. automatic archival Enabled 9. archive destination/opt/oracle/oradata/conner/archive 10. oldest online log sequence 148 11. next log sequence to archive 151 12. current log sequence 151