Oracle学习(七)之增加日志组
2015-05-30 09:43
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增加日志组的sql 语句:
alter database add logfile group [组号]
(‘日志组文件1’,
‘日志组文件2’,
‘日志组文件3’)
size 日志组大小;
注:
1)组号可以不用制定,数据库会自动填写(一般按组号递增顺序)
2)可以有多个日志组文件,中间用“,”连接就好
1.增加组:
SQL> alter database add logfile group 8
2 (‘/u03/ora11g/student/redo0801.rdo’,
3 ‘/u04/ora11g/student/redo0802.rdo’,
4 ‘/u05/ora11g/student/redo0803.rdo’)
5 size 50m;
Database altered.
2.查询日志组状态
SQL> select GROUP#,STATUS from v$log;
3.查询日志组文件
SQL> select GROUP#,MEMBER from v$logfile order by 1,2;
alter database add logfile group [组号]
(‘日志组文件1’,
‘日志组文件2’,
‘日志组文件3’)
size 日志组大小;
注:
1)组号可以不用制定,数据库会自动填写(一般按组号递增顺序)
2)可以有多个日志组文件,中间用“,”连接就好
1.增加组:
SQL> alter database add logfile group 8
2 (‘/u03/ora11g/student/redo0801.rdo’,
3 ‘/u04/ora11g/student/redo0802.rdo’,
4 ‘/u05/ora11g/student/redo0803.rdo’)
5 size 50m;
Database altered.
2.查询日志组状态
SQL> select GROUP#,STATUS from v$log;
GROUP# STATUS --------------- ---------------- 1 INACTIVE 2 INACTIVE 3 CURRENT 8 UNUSED
3.查询日志组文件
SQL> select GROUP#,MEMBER from v$logfile order by 1,2;
GROUP# MEMBER ------ ---------------------------------------- 1 /u03/ora11g/student/redo0101.rdo 1 /u03/ora11g/student/redo0201.rdo 1 /u03/ora11g/student/redo0301.rdo 2 /u04/ora11g/student/redo0202.rdo 2 /u04/ora11g/student/redo0302.rdo 2 /u04/ora11g/student/redo0402.rdo 3 /u05/ora11g/student/redo0103.rdo 3 /u05/ora11g/student/redo0203.rdo 3 /u05/ora11g/student/redo0303.rdo 8 /u03/ora11g/student/redo0801.rdo 8 /u04/ora11g/student/redo0802.rdo 8 /u05/ora11g/student/redo0803.rdo
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