在Oracle10g中，log_archive_start参数已经被废弃，只要启动数据库的归档模式，Oracle就会启用自动归档，从而避免了10g以前由于用户疏忽所带来的一系列问题。
$ sqlplus "/ as sysdba"
SQL*Plus: Release 10.1.0.3.0 - Production on Wed Apr 13 09:53:25 2005
Copyright (c) 1982, 2004, Oracle.
All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.1.0.3.0 - 64bit Production
With the Partitioning and Data Mining options
SQL archive log list;
Database log mode
No Archive Mode
Automatic archival
Disabled
Archive destination
USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence
25
Current log sequence
27
SQL show parameter log_archive_start
NAME
TYPE
VALUE
------------------------------------ ----------- ------------------------------
log_archive_start
boolean
FALSE
SQL shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL startup mount;
ORACLE instance started.
Total System Global Area 3204448256 bytes
Fixed Size
1304912 bytes
Variable Size
651957936 bytes
Database Buffers
2550136832 bytes
Redo Buffers
1048576 bytes
Database mounted.
SQL alter database archivelog;
Database altered.
SQL alter database open;
Database altered.
SQL archive log list;
Database log mode
Archive Mode
Automatic archival
Enabled
Archive destination
USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence
25
Next log sequence to archive
27
Current log sequence
27
SQL
~
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