Oracle Database 联机日志文件管理

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查询联机日志组
SQL> select group#,sequence#,members,bytes,status,archived from v$log;
    GROUP#  SEQUENCE#    MEMBERS      BYTES Status    ARCHIVED
---------- ---------- ---------- ---------- --------- ---------
         1          4          1   52428800 INACTIVE  YES
         2          5          1   52428800 INACTIVE  YES
         3          6          1   52428800 CURRENT   NO

删除联机日志组
SQL> alter database drop logfile group 1;

SQL> host rm -rf /u01/app/oracle/oradata/king/redo01.log

创建联机日志组
SQL> alter database add logfile group 1
('/u01/app/oracle/oradata/king/redo01a.log','/u01/app/oracle/oradata/king/redo01b.log')
size 50M;

SQL> alter database drop logfile group 2;

SQL> host rm -rf /u01/app/oracle/oradata/king/redo02.log

SQL> alter database add logfile group 2
('/u01/app/oracle/oradata/king/redo02a.log','/u01/app/oracle/oradata/king/redo02b.log')
size 50M;

SQL> alter system switch logfile;

SQL> alter system checkpoint;

SQL> alter database drop logfile group 3;

SQL> host rm -rf /u01/app/oracle/oradata/king/redo03.log

SQL> alter database add logfile group 3
('/u01/app/oracle/oradata/king/redo03a.log','/u01/app/oracle/oradata/king/redo03b.log')
size 50M;

SQL> select group#,status,type,member from v$logfile;
    GROUP# Status    TS Type         MEMBER
---------- --------- --------------- --------------------------------------------------
         3           ONLINE          /u01/app/oracle/oradata/king/redo03a.log
         2           ONLINE          /u01/app/oracle/oradata/king/redo02a.log
         1           ONLINE          /u01/app/oracle/oradata/king/redo01a.log
         1           ONLINE          /u01/app/oracle/oradata/king/redo01b.log
         2           ONLINE          /u01/app/oracle/oradata/king/redo02b.log
         3           ONLINE          /u01/app/oracle/oradata/king/redo03b.log

SQL> select group#,sequence#,members,bytes,status,archived from v$log;
    GROUP#  SEQUENCE#    MEMBERS      BYTES Status    ARCHIVED
---------- ---------- ---------- ---------- --------- ---------
         1          7          2   52428800 CURRENT   NO
         2          0          2   52428800 UNUSED    YES
         3          0          2   52428800 UNUSED    YES

在日志组中增加联机日志文件
SQL> alter database add logfile member
'/u01/app/oracle/oradata/king/redo01c.log' to group 1,
'/u01/app/oracle/oradata/king/redo02c.log' to group 2,
'/u01/app/oracle/oradata/king/redo03c.log' to group 3;

SQL> select group#,status,type,member from v$logfile;
    GROUP# Status    TS Type         MEMBER
---------- --------- --------------- --------------------------------------------------
         3           ONLINE          /u01/app/oracle/oradata/king/redo03a.log
         2           ONLINE          /u01/app/oracle/oradata/king/redo02a.log
         1           ONLINE          /u01/app/oracle/oradata/king/redo01a.log
         1           ONLINE          /u01/app/oracle/oradata/king/redo01b.log
         2           ONLINE          /u01/app/oracle/oradata/king/redo02b.log
         3           ONLINE          /u01/app/oracle/oradata/king/redo03b.log
         1 INVALID   ONLINE          /u01/app/oracle/oradata/king/redo01c.log
         2 INVALID   ONLINE          /u01/app/oracle/oradata/king/redo02c.log
         3 INVALID   ONLINE          /u01/app/oracle/oradata/king/redo03c.log

SQL> select group#,sequence#,members,bytes,status,archived from v$log;
    GROUP#  SEQUENCE#    MEMBERS      BYTES Status    ARCHIVED
---------- ---------- ---------- ---------- --------- ---------
         1          7          3   52428800 CURRENT   NO
         2          0          3   52428800 UNUSED    YES
         3          0          3   52428800 UNUSED    YES

删除日志组中的联机日志文件
SQL>  alter database drop logfile member
'/u01/app/oracle/oradata/king/redo02c.log';

SQL> host rm -rf /u01/app/oracle/oradata/king/redo02c.log

SQL> alter database drop logfile member
'/u01/app/oracle/oradata/king/redo03c.log';

SQL> host rm -rf /u01/app/oracle/oradata/king/redo03c.log

SQL> alter system switch logfile;
SQL> alter system checkpoint;

SQL>  alter database drop logfile member
'/u01/app/oracle/oradata/king/redo01c.log';

SQL> host rm -rf /u01/app/oracle/oradata/king/redo01c.log

Oracle Database 联机日志文件管理

标签：rom   host   int   arch   文件   nbsp   use   lse   stat   

原文地址：http://blog.51cto.com/13598811/2132015