数据库归档与非归档的转换

[root@rtest ~]# su - oracle
[oracle@rtest ~]$ sqlplus /nolog

SQL*Plus: Release 11.2.0.3.0 Production on Mon Sep 2 10:47:46 2013

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

idle> conn /as sysdba
Connected.
sys@TESTDB> archive log list;
Database log mode              No Archive Mode
Automatic archival             Disabled
Archive destination            USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence     5
Current log sequence           7
sys@TESTDB> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
sys@TESTDB> startup mount;
ORACLE instance started.

Total System Global Area 2505338880 bytes
Fixed Size                  2230952 bytes
Variable Size             553649496 bytes
Database Buffers         1929379840 bytes
Redo Buffers               20078592 bytes
Database mounted.
sys@TESTDB> alter database archivelog;

Database altered.

sys@TESTDB> alter database open;

Database altered.

sys@TESTDB> archive log list;
Database log mode              Archive Mode
Automatic archival             Enabled
Archive destination            USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence     5
Next log sequence to archive   7
Current log sequence           7
sys@TESTDB> shutdown immedaite;
SP2-0717: illegal SHUTDOWN option
sys@TESTDB> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
sys@TESTDB> startup mount;
ORACLE instance started.

Total System Global Area 2505338880 bytes
Fixed Size                  2230952 bytes
Variable Size             553649496 bytes
Database Buffers         1929379840 bytes
Redo Buffers               20078592 bytes
Database mounted.
sys@TESTDB> alter database noarchivelog;

Database altered.

sys@TESTDB> alter database open;

Database altered.

sys@TESTDB> archive log list;
Database log mode              No Archive Mode
Automatic archival             Disabled
Archive destination            USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence     5
Current log sequence           7
sys@TESTDB> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
sys@TESTDB> startup mount;
ORACLE instance started.

Total System Global Area 2505338880 bytes
Fixed Size                  2230952 bytes
Variable Size             553649496 bytes
Database Buffers         1929379840 bytes
Redo Buffers               20078592 bytes
Database mounted.
sys@TESTDB> alter database archivelog;

Database altered.

sys@TESTDB> alter database open;

Database altered.

sys@TESTDB> archive log list;
Database log mode              Archive Mode
Automatic archival             Enabled
Archive destination            USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence     5
Next log sequence to archive   7
Current log sequence           7

总结：

在mount状态下转换，
使用alter database archivelog;转为归档
使用alter database noarchivelog;转为非归档
最后打开数据库alter database open;