有关联机日志、归档日志规划，设置等其参考:
1、演示环境
sys@CNBO1> select * from v$version where rownum<2;
BANNER
----------------------------------------------------------------
Oracle Database 10g Release 10.2.0.3.0 - 64bit Production
sys@CNBO1> archive log list;
Database log mode Archive Mode -->已处于归档模式
Automatic archival Enabled
Archive destination /u02/database/CNBO1/archive/
Oldest online log sequence 4881
Next log sequence to archive 4884
Current log sequence 4884
2、日志使用情况
sys@CNBO1> @log_stat
GROUP# MEMBER SEQUENCE# SIZE_MB STATUS
---------- --------------------------------------------- ---------- ---------- -------
1 /u02/database/CNBO1/redolog/log1aCNBO1.log 4881 20 ACTIVE
1 /u02/database/CNBO1/redolog/log1bCNBO1.log 4881 20 ACTIVE
2 /u02/database/CNBO1/redolog/log2aCNBO1.log 4882 20 ACTIVE
2 /u02/database/CNBO1/redolog/log2bCNBO1.log 4882 20 ACTIVE
3 /u02/database/CNBO1/redolog/log3aCNBO1.log 4883 20 ACTIVE
3 /u02/database/CNBO1/redolog/log3bCNBO1.log 4883 20 ACTIVE
4 /u02/database/CNBO1/redolog/log4aCNBO1.log 4884 20 ACTIVE
4 /u02/database/CNBO1/redolog/log4bCNBO1.log 4884 20 CURRENT
8 rows selected.
sys@CNBO1> select group#,archived,status from v$log;
GROUP# ARC STATUS
---------- --- ----------------
1 YES ACTIVE
2 YES ACTIVE
3 YES ACTIVE
4 NO CURRENT