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RAC对单实例DG redo大小日志修改

发表于:2024-11-28 作者:千家信息网编辑
千家信息网最后更新 2024年11月28日,解决思路是:先备库增加standby redo删除老standby redo,然后主库增加standby redo删除老standby redo,主库增加新redo删除老redo,最后备库库增加 re
千家信息网最后更新 2024年11月28日RAC对单实例DG redo大小日志修改
  1. 解决思路是:先备库增加standby redo删除老standby redo,然后主库增加standby redo删除老standby redo,主库增加新redo删除老redo,最后备库库增加 redo删除老redo。

  2. 查看主库redo日志信息:

  3. SELECT a.group#,       a.thread#,       a.bytes / 1024 / 1024 "size_mb",       a.members,       a.status,       b.MEMBER  FROM v$log a, v$logfile b where a.group#= b.group# and b.TYPE='ONLINE' ORDER BY a.GROUP#;   GROUP#    THREAD#  size_mb    MEMBERS STATUS      MEMBER---------- ---------- ---------- ---------- ---------------- ------------------------------------------------------------  1     1       50   2 CURRENT      +DATA/mecbs/onlinelog/group_1.261.862339607  1     1       50   2 CURRENT      +RECO/mecbs/onlinelog/group_1.redo01.log  2     1       50   2 INACTIVE      +DATA/mecbs/onlinelog/group_2.262.862339621  2     1       50   2 INACTIVE      +RECO/mecbs/onlinelog/group_2.redo01.log  3     2       50   2 INACTIVE      +RECO/mecbs/onlinelog/group_3.redo01.log  3     2       50   2 INACTIVE      +DATA/mecbs/onlinelog/group_3.266.862341957  4     2       50   2 CURRENT      +RECO/mecbs/onlinelog/group_4.redo01.log  4     2       50   2 CURRENT      +DATA/mecbs/onlinelog/group_4.267.862341967

查看主库Standbylog 信息:

SQL> set pagesize 100    SELECT a.group#,       a.thread#,       a.bytes / 1024 / 1024 "size_mb",       a.status,       b.member  FROM v$standby_log a, v$logfile b     WHERE a.group# = b.group#   AND b.type = 'STANDBY'  ORDER BY a.group#;    GROUP#    THREAD#  size_mb STATUS     MEMBER    ---------- ---------- ---------- ---------- ------------------------------------------------------------  5     1       50 UNASSIGNED +DATA/mecbs/onlinelog/group_5.269.862401827  5     1       50 UNASSIGNED +RECO/mecbs/onlinelog/group_5.261.862401835  6     1       50 UNASSIGNED +DATA/mecbs/onlinelog/group_6.270.862401861  6     1       50 UNASSIGNED +RECO/mecbs/onlinelog/group_6.262.862401871  7     1       50 UNASSIGNED +DATA/mecbs/onlinelog/group_7.271.862401977  7     1       50 UNASSIGNED +RECO/mecbs/onlinelog/group_7.263.862401983  8     2       50 UNASSIGNED +DATA/mecbs/onlinelog/group_8.272.862402121  8     2       50 UNASSIGNED +RECO/mecbs/onlinelog/group_8.264.862402137  9     2       50 UNASSIGNED +DATA/mecbs/onlinelog/group_9.273.862402187  9     2       50 UNASSIGNED +RECO/mecbs/onlinelog/group_9.265.862402189 10     2       50 UNASSIGNED +DATA/mecbs/onlinelog/group_10.274.862402213 10     2       50 UNASSIGNED +RECO/mecbs/onlinelog/group_10.266.862402217
SELECT a.group#,       a.thread#,       a.bytes / 1024 / 1024 "size_mb",       a.status,       b.member  FROM v$standby_log a, v$logfile b WHERE a.group# = b.group#  7    8     AND b.type = 'STANDBY'  9   ORDER BY a.group#;    GROUP#    THREAD#  size_mb STATUS     MEMBER---------- ---------- ---------- ---------- ------------------------------------------------------------  5     1       50 UNASSIGNED +DATA/phub/onlinelog/group_5.260.884293665  5     1       50 UNASSIGNED +RECO/phub/onlinelog/group_5.619.884293671  6     1       50 UNASSIGNED +DATA/phub/onlinelog/group_6.272.884293677  6     1       50 UNASSIGNED +RECO/phub/onlinelog/group_6.618.884293683  7     1       50 ACTIVE     +DATA/phub/onlinelog/group_7.273.884293689  7     1       50 ACTIVE     +RECO/phub/onlinelog/group_7.616.884293695  8     2       50 ACTIVE     +DATA/phub/onlinelog/group_8.264.884293703  8     2       50 ACTIVE     +RECO/phub/onlinelog/group_8.617.884293707  9     2       50 UNASSIGNED +DATA/phub/onlinelog/group_9.286.884293715  9     2       50 UNASSIGNED +RECO/phub/onlinelog/group_9.615.884293727 10     2       50 UNASSIGNED +DATA/phub/onlinelog/group_10.256.884293735 10     2       50 UNASSIGNED +RECO/phub/onlinelog/group_10.614.884293739
SELECT a.group#,       a.thread#,       a.bytes / 1024 / 1024 "size_mb",       a.members,       a.status,       b.member  FROM v$log a, v$logfile b WHERE a.group# = b.group#   AND b.type = 'ONLINE' 10   ORDER BY a.group#;    GROUP#    THREAD#  size_mb    MEMBERS STATUS      MEMBER
---------- ---------- ---------- ---------- ---------------- ------------------------------------------------------------  1     1       50   2 CURRENT      +DATA/phub/onlinelog/group_1.282.884293611  1     1       50   2 CURRENT      +RECO/phub/onlinelog/group_1.624.884293619  2     1       50   2 CLEARING      +DATA/phub/onlinelog/group_2.281.884293627  2     1       50   2 CLEARING      +RECO/phub/onlinelog/group_2.622.884293629  3     2       50   2 CLEARING      +RECO/phub/onlinelog/group_3.620.884293641  3     2       50   2 CLEARING      +DATA/phub/onlinelog/group_3.280.884293635  4     2       50   2 CURRENT      +RECO/phub/onlinelog/group_4.621.884293661  4     2       50   2 CURRENT      +DATA/phub/onlinelog/group_4.266.884293655

取消备库日志应用:

SQL> alter database recover managed standby database cancel;Database altered.

4.备库standby log 添加:

alter database add standby logfile thread 1('+BACK','+RECO') size 100M;alter database add standby logfile thread 1('+BACK','+RECO') size 100M;alter database add standby logfile thread 1('+BACK','+RECO') size 100M;alter database add standby logfile thread 2('+BACK','+RECO') size 100M;alter database add standby logfile thread 2('+BACK','+RECO') size 100M;alter database add standby logfile thread 2('+BACK','+RECO') size 100M;

(由于实验环境DATA磁盘组空间不够,所以添加到BACK磁盘组中)

SELECT a.group#,       a.thread#,       a.bytes / 1024 / 1024 "size_mb",       a.status,       b.member  FROM v$standby_log a, v$logfile b WHERE a.group# = b.group#   AND b.type = 'STANDBY'  9   ORDER BY a.group#;    GROUP#    THREAD#  size_mb STATUS     MEMBER---------- ---------- ---------- ---------- ------------------------------------------------------------  5     1       50 UNASSIGNED +DATA/phub/onlinelog/group_5.260.884293665  5     1       50 UNASSIGNED +RECO/phub/onlinelog/group_5.619.884293671  6     1       50 UNASSIGNED +DATA/phub/onlinelog/group_6.272.884293677  6     1       50 UNASSIGNED +RECO/phub/onlinelog/group_6.618.884293683  7     1       50 ACTIVE     +DATA/phub/onlinelog/group_7.273.884293689  7     1       50 ACTIVE     +RECO/phub/onlinelog/group_7.616.884293695  8     2       50 ACTIVE     +DATA/phub/onlinelog/group_8.264.884293703  8     2       50 ACTIVE     +RECO/phub/onlinelog/group_8.617.884293707  9     2       50 UNASSIGNED +DATA/phub/onlinelog/group_9.286.884293715  9     2       50 UNASSIGNED +RECO/phub/onlinelog/group_9.615.884293727 10     2       50 UNASSIGNED +DATA/phub/onlinelog/group_10.256.884293735 10     2       50 UNASSIGNED +RECO/phub/onlinelog/group_10.614.884293739 11     1      100 UNASSIGNED +BACK/phub/onlinelog/group_11.306.886088609 11     1      100 UNASSIGNED +RECO/phub/onlinelog/group_11.548.886088623 12     1      100 UNASSIGNED +BACK/phub/onlinelog/group_12.307.886088647 12     1      100 UNASSIGNED +RECO/phub/onlinelog/group_12.550.886088653 13     1      100 UNASSIGNED +BACK/phub/onlinelog/group_13.289.886088921 13     1      100 UNASSIGNED +RECO/phub/onlinelog/group_13.551.886088931 14     2      100 UNASSIGNED +BACK/phub/onlinelog/group_14.288.886088951 14     2      100 UNASSIGNED +RECO/phub/onlinelog/group_14.553.886088963 15     2      100 UNASSIGNED +BACK/phub/onlinelog/group_15.305.886088979 15     2      100 UNASSIGNED +RECO/phub/onlinelog/group_15.552.886088993 16     2      100 UNASSIGNED +BACK/phub/onlinelog/group_16.304.886089015 16     2      100 UNASSIGNED +RECO/phub/onlinelog/group_16.638.886089027

5.删除备库standby log

SQL> alter database drop logfile group 5;
Database altered.SQL> alter database drop logfile group 6;Database altered.SQL> alter database drop logfile group 7;alter database drop logfile group 7*ERROR at line 1:ORA-00261: log 7 of thread 1 is being archived or modifiedORA-00312: online log 7 thread 1: '+DATA/phub/onlinelog/group_7.273.884293689'ORA-00312: online log 7 thread 1: '+RECO/phub/onlinelog/group_7.616.884293695'SQL> alter database drop logfile group 7;Database altered.SQL> alter database drop logfile group 8;Database altered.SQL> alter database drop logfile group 9;Database altered.SQL> alter database drop logfile group 10;Database altered.

一边在主库上切换日志,一边在备库上查询那些组UNASSIGNED,然后逐个drop掉:

完成后,再次查询备库standby_log:

SELECT a.group#,       a.thread#,       a.bytes / 1024 / 1024 "size_mb",       a.status,       b.member  FROM v$standby_log a, v$logfile b WHERE a.group# = b.group#   AND b.type = 'STANDBY'  ORDER BY a.group#;    GROUP#    THREAD#  size_mb STATUS     MEMBER---------- ---------- ---------- ---------- ------------------------------------------------------------ 11     1      100 UNASSIGNED +BACK/phub/onlinelog/group_11.306.886088609 11     1      100 UNASSIGNED +RECO/phub/onlinelog/group_11.548.886088623 12     1      100 ACTIVE     +BACK/phub/onlinelog/group_12.307.886088647 12     1      100 ACTIVE     +RECO/phub/onlinelog/group_12.550.886088653 13     1      100 UNASSIGNED +BACK/phub/onlinelog/group_13.289.886088921 13     1      100 UNASSIGNED +RECO/phub/onlinelog/group_13.551.886088931 14     2      100 ACTIVE     +BACK/phub/onlinelog/group_14.288.886088951 14     2      100 ACTIVE     +RECO/phub/onlinelog/group_14.553.886088963 15     2      100 UNASSIGNED +BACK/phub/onlinelog/group_15.305.886088979 15     2      100 UNASSIGNED +RECO/phub/onlinelog/group_15.552.886088993 16     2      100 UNASSIGNED +BACK/phub/onlinelog/group_16.304.886089015 16     2      100 UNASSIGNED +RECO/phub/onlinelog/group_16.638.886089027

6.主库standbylog添加:

alter database add standby logfile thread 1('+DATA','+RECO') size 100M;alter database add standby logfile thread 1('+DATA','+RECO') size 100M;alter database add standby logfile thread 1('+DATA','+RECO') size 100M;alter database add standby logfile thread 2('+DATA','+RECO') size 100M;alter database add standby logfile thread 2('+DATA','+RECO') size 100M;alter database add standby logfile thread 2('+DATA','+RECO') size 100M;
SELECT a.group#,       a.thread#,       a.bytes / 1024 / 1024 "size_mb",       a.status,       b.member  FROM v$standby_log a, v$logfile b WHERE a.group# = b.group#   AND b.type = 'STANDBY'  9   ORDER BY a.group#;    GROUP#    THREAD#  size_mb STATUS     MEMBER---------- ---------- ---------- ---------- ------------------------------------------------------------  5     1       50 UNASSIGNED +DATA/mecbs/onlinelog/group_5.269.862401827  5     1       50 UNASSIGNED +RECO/mecbs/onlinelog/group_5.261.862401835  6     1       50 UNASSIGNED +DATA/mecbs/onlinelog/group_6.270.862401861  6     1       50 UNASSIGNED +RECO/mecbs/onlinelog/group_6.262.862401871  7     1       50 UNASSIGNED +DATA/mecbs/onlinelog/group_7.271.862401977  7     1       50 UNASSIGNED +RECO/mecbs/onlinelog/group_7.263.862401983  8     2       50 UNASSIGNED +DATA/mecbs/onlinelog/group_8.272.862402121  8     2       50 UNASSIGNED +RECO/mecbs/onlinelog/group_8.264.862402137  9     2       50 UNASSIGNED +DATA/mecbs/onlinelog/group_9.273.862402187  9     2       50 UNASSIGNED +RECO/mecbs/onlinelog/group_9.265.862402189 10     2       50 UNASSIGNED +DATA/mecbs/onlinelog/group_10.274.862402213 10     2       50 UNASSIGNED +RECO/mecbs/onlinelog/group_10.266.862402217 11     1      100 UNASSIGNED +DATA/mecbs/onlinelog/group_11.277.886086953 11     1      100 UNASSIGNED +RECO/mecbs/onlinelog/group_11.927.886086965 12     1      100 UNASSIGNED +DATA/mecbs/onlinelog/group_12.282.886086997 12     1      100 UNASSIGNED +RECO/mecbs/onlinelog/group_12.928.886087017 13     1      100 UNASSIGNED +DATA/mecbs/onlinelog/group_13.283.886087033 13     1      100 UNASSIGNED +RECO/mecbs/onlinelog/group_13.929.886087047 14     2      100 UNASSIGNED +DATA/mecbs/onlinelog/group_14.284.886087059 14     2      100 UNASSIGNED +RECO/mecbs/onlinelog/group_14.930.886087067 15     2      100 UNASSIGNED +DATA/mecbs/onlinelog/group_15.285.886087089 15     2      100 UNASSIGNED +RECO/mecbs/onlinelog/group_15.931.886087099 16     2      100 UNASSIGNED +DATA/mecbs/onlinelog/group_16.286.886087115 16     2      100 UNASSIGNED +RECO/mecbs/onlinelog/group_16.932.886087125alter database drop logfile group 5;alter database drop logfile group 6;alter database drop logfile group 7;alter database drop logfile group 8;alter database drop logfile group 9;alter database drop logfile group 10;
SELECT a.group#,       a.thread#,       a.bytes / 1024 / 1024 "size_mb",       a.status,       b.member  FROM v$standby_log a, v$logfile b WHERE a.group# = b.group#   AND b.type = 'STANDBY'  9   ORDER BY a.group#;    GROUP#    THREAD#  size_mb STATUS     MEMBER---------- ---------- ---------- ---------- ------------------------------------------------------------ 11     1      100 UNASSIGNED +DATA/mecbs/onlinelog/group_11.277.886086953 11     1      100 UNASSIGNED +RECO/mecbs/onlinelog/group_11.927.886086965 12     1      100 UNASSIGNED +DATA/mecbs/onlinelog/group_12.282.886086997 12     1      100 UNASSIGNED +RECO/mecbs/onlinelog/group_12.928.886087017 13     1      100 UNASSIGNED +DATA/mecbs/onlinelog/group_13.283.886087033 13     1      100 UNASSIGNED +RECO/mecbs/onlinelog/group_13.929.886087047 14     2      100 UNASSIGNED +DATA/mecbs/onlinelog/group_14.284.886087059 14     2      100 UNASSIGNED +RECO/mecbs/onlinelog/group_14.930.886087067 15     2      100 UNASSIGNED +DATA/mecbs/onlinelog/group_15.285.886087089 15     2      100 UNASSIGNED +RECO/mecbs/onlinelog/group_15.931.886087099 16     2      100 UNASSIGNED +DATA/mecbs/onlinelog/group_16.286.886087115 16     2      100 UNASSIGNED +RECO/mecbs/onlinelog/group_16.932.886087125

7.主库添加新的ONLINE REDO LOG:

SQL>alter database add logfile thread 1('+DATA','+RECO') size 100M;Database altered.SQL>alter database add logfile thread 1('+DATA','+RECO') size 100M;Database altered.SQL>alter database add logfile thread 1('+DATA','+RECO') size 100M;Database altered.SQL>alter database add logfile thread 2('+DATA','+RECO') size 100M;Database altered.SQL>alter database add logfile thread 2('+DATA','+RECO') size 100M;Database altered.SQL>alter database add logfile thread 2('+DATA','+RECO') size 100M;Database altered.

查询添加结果:

SELECT a.group#,       a.thread#,       a.bytes / 1024 / 1024 "size_mb",       a.members,       a.status,       b.member  FROM v$log a, v$logfile b WHERE a.group# = b.group#   AND b.type = 'ONLINE'  5    6    7    8    9   10   ORDER BY a.group#;    GROUP#    THREAD#  size_mb    MEMBERS STATUS      MEMBER---------- ---------- ---------- ---------- ---------------- ------------------------------------------------------------  1     1       50   2 CURRENT      +RECO/mecbs/onlinelog/group_1.redo01.log  1     1       50   2 CURRENT      +DATA/mecbs/onlinelog/group_1.261.862339607  2     1       50   2 INACTIVE      +DATA/mecbs/onlinelog/group_2.262.862339621  2     1       50   2 INACTIVE      +RECO/mecbs/onlinelog/group_2.redo01.log  3     2       50   2 CURRENT      +DATA/mecbs/onlinelog/group_3.266.862341957  3     2       50   2 CURRENT      +RECO/mecbs/onlinelog/group_3.redo01.log  4     2       50   2 INACTIVE      +RECO/mecbs/onlinelog/group_4.redo01.log  4     2       50   2 INACTIVE      +DATA/mecbs/onlinelog/group_4.267.862341967  5     1      100   2 UNUSED      +DATA/mecbs/onlinelog/group_5.274.886087389  5     1      100   2 UNUSED      +RECO/mecbs/onlinelog/group_5.266.886087403  6     1      100   2 UNUSED      +RECO/mecbs/onlinelog/group_6.265.886087423  6     1      100   2 UNUSED      +DATA/mecbs/onlinelog/group_6.273.886087413  7     1      100   2 UNUSED      +DATA/mecbs/onlinelog/group_7.272.886087433  7     1      100   2 UNUSED      +RECO/mecbs/onlinelog/group_7.264.886087441  8     2      100   2 UNUSED      +RECO/mecbs/onlinelog/group_8.263.886087483  8     2      100   2 UNUSED      +DATA/mecbs/onlinelog/group_8.271.886087455  9     2      100   2 UNUSED      +RECO/mecbs/onlinelog/group_9.262.886087513  9     2      100   2 UNUSED      +DATA/mecbs/onlinelog/group_9.270.886087497 10     2      100   2 UNUSED      +DATA/mecbs/onlinelog/group_10.269.886087541 10     2      100   2 UNUSED      +RECO/mecbs/onlinelog/group_10.261.886087553


8.主库删除旧的ONLINE REDOLOG;(

alter database drop logfile group 1;alter database drop logfile group 2;alter database drop logfile group 3;alter database drop logfile group 4;)SELECT a.group#,       a.thread#,       a.bytes / 1024 / 1024 "size_mb",       a.members,       a.status,       b.member  FROM v$log a, v$logfile b WHERE a.group# = b.group#   AND b.type = 'ONLINE' 10   ORDER BY a.group#;    GROUP#    THREAD#  size_mb    MEMBERS STATUS      MEMBER---------- ---------- ---------- ---------- ---------------- ------------------------------------------------------------  5     1      100   2 CURRENT      +DATA/mecbs/onlinelog/group_5.274.886087389  5     1      100   2 CURRENT      +RECO/mecbs/onlinelog/group_5.266.886087403  6     1      100   2 INACTIVE      +DATA/mecbs/onlinelog/group_6.273.886087413  6     1      100   2 INACTIVE      +RECO/mecbs/onlinelog/group_6.265.886087423  7     1      100   2 INACTIVE      +DATA/mecbs/onlinelog/group_7.272.886087433  7     1      100   2 INACTIVE      +RECO/mecbs/onlinelog/group_7.264.886087441  8     2      100   2 INACTIVE      +DATA/mecbs/onlinelog/group_8.271.886087455  8     2      100   2 INACTIVE      +RECO/mecbs/onlinelog/group_8.263.886087483  9     2      100   2 CURRENT      +DATA/mecbs/onlinelog/group_9.270.886087497  9     2      100   2 CURRENT      +RECO/mecbs/onlinelog/group_9.262.886087513 10     2      100   2 INACTIVE      +DATA/mecbs/onlinelog/group_10.269.886087541 10     2      100   2 INACTIVE      +RECO/mecbs/onlinelog/group_10.261.88608755312 rows selected.

9.备库添加新的ONLINE REDO LOG

SELECT a.group#,       a.thread#,       a.bytes / 1024 / 1024 "size_mb",       a.members,       a.status,       b.member  FROM v$log a, v$logfile b WHERE a.group# = b.group#   AND b.type = 'ONLINE' 10   ORDER BY a.group#;    GROUP#    THREAD#  size_mb    MEMBERS STATUS      MEMBER---------- ---------- ---------- ---------- ---------------- ------------------------------------------------------------  1     1       50   2 CLEARING      +DATA/phub/onlinelog/group_1.282.884293611  1     1       50   2 CLEARING      +RECO/phub/onlinelog/group_1.624.884293619  2     1       50   2 CLEARING      +DATA/phub/onlinelog/group_2.281.884293627  2     1       50   2 CLEARING      +RECO/phub/onlinelog/group_2.622.884293629  3     2       50   2 CLEARING      +RECO/phub/onlinelog/group_3.620.884293641  3     2       50   2 CLEARING      +DATA/phub/onlinelog/group_3.280.884293635  4     2       50   2 CLEARING      +RECO/phub/onlinelog/group_4.621.884293661  4     2       50   2 CLEARING      +DATA/phub/onlinelog/group_4.266.884293655
8 rows selected.ORA-01275: Operation ADD LOGFILE is not allowed if standby file management is automatic.SQL> alter system set standby_file_management='MANUAL';System altered.SQL>alter database add logfile thread 1('+BACK','+RECO') size 100M;Database alteredSQL> .alter database add logfile thread 1('+BACK','+RECO') size 100M;Database altered.SQL>alter database add logfile thread 1('+BACK','+RECO') size 100M;Database altered.SQL>alter database add logfile thread 2('+BACK','+RECO') size 100M;Database altered.SQL>alter database add logfile thread 2('+BACK','+RECO') size 100M;Database altered.SQL>alter database add logfile thread 2('+BACK','+RECO') size 100M;Database altered.

10.删除备库旧的ONLINE REDO LOG:

如果日志状态一直是CLEARING,做以下操作:

SQL> alter database clear logfile group 1;Database altered.SQL> alter database clear logfile group 2;Database altered.SQL> alter database drop logfile group 1;Database altered.SQL> alter database drop logfile group 2;Database altered.
SELECT a.group#,       a.thread#,       a.bytes / 1024 / 1024 "size_mb",       a.members,       a.status,       b.member  FROM v$log a, v$logfile b WHERE a.group# = b.group#   AND b.type = 'ONLINE' 10   ORDER BY a.group#;    GROUP#    THREAD#  size_mb    MEMBERS STATUS      MEMBER---------- ---------- ---------- ---------- ---------------- ------------------------------------------------------------  5     1      100   2 CURRENT      +BACK/phub/onlinelog/group_5.303.886091387  5     1      100   2 CURRENT      +RECO/phub/onlinelog/group_5.599.886091395  6     1      100   2 CLEARING      +BACK/phub/onlinelog/group_6.302.886091401  6     1      100   2 CLEARING      +RECO/phub/onlinelog/group_6.604.886091411  7     1      100   2 CLEARING      +BACK/phub/onlinelog/group_7.301.886091425  7     1      100   2 CLEARING      +RECO/phub/onlinelog/group_7.603.886091435  8     2      100   2 CURRENT      +BACK/phub/onlinelog/group_8.300.886091441  8     2      100   2 CURRENT      +RECO/phub/onlinelog/group_8.609.886091449  9     2      100   2 CLEARING      +BACK/phub/onlinelog/group_9.299.886091457  9     2      100   2 CLEARING      +RECO/phub/onlinelog/group_9.611.886091467 10     2      100   2 CLEARING      +BACK/phub/onlinelog/group_10.298.886091479 10     2      100   2 CLEARING      +RECO/phub/onlinelog/group_10.612.88609150112 rows selected.SQL> alter system set standby_file_management='AUTO' scope=both;System altered.SQL> alter database recover managed standby database using current logfile disconnect from session;Database altered.

---------------------------查看redo日志切换频率--------------------------------------------

Select round(FIRST_TIME, 'DD'), THREAD#, Count(SEQUENCE#)  From v$log_history Group By round(FIRST_TIME, 'DD'), THREAD# Order By 1, 2SELECT  trunc(first_time) "Date",        to_char(first_time, 'Dy') "Day",        count(1) "Total",        SUM(decode(to_char(first_time, 'hh34'),'00',1,0)) "h0",        SUM(decode(to_char(first_time, 'hh34'),'01',1,0)) "h2",        SUM(decode(to_char(first_time, 'hh34'),'02',1,0)) "h3",        SUM(decode(to_char(first_time, 'hh34'),'03',1,0)) "h4",        SUM(decode(to_char(first_time, 'hh34'),'04',1,0)) "h5",        SUM(decode(to_char(first_time, 'hh34'),'05',1,0)) "h6",        SUM(decode(to_char(first_time, 'hh34'),'06',1,0)) "h7",        SUM(decode(to_char(first_time, 'hh34'),'07',1,0)) "h7",        SUM(decode(to_char(first_time, 'hh34'),'08',1,0)) "h8",        SUM(decode(to_char(first_time, 'hh34'),'09',1,0)) "h9",        SUM(decode(to_char(first_time, 'hh34'),'10',1,0)) "h20",        SUM(decode(to_char(first_time, 'hh34'),'11',1,0)) "h21",        SUM(decode(to_char(first_time, 'hh34'),'12',1,0)) "h22",        SUM(decode(to_char(first_time, 'hh34'),'13',1,0)) "h23",        SUM(decode(to_char(first_time, 'hh34'),'14',1,0)) "h24",        SUM(decode(to_char(first_time, 'hh34'),'15',1,0)) "h25",        SUM(decode(to_char(first_time, 'hh34'),'16',1,0)) "h26",        SUM(decode(to_char(first_time, 'hh34'),'17',1,0)) "h27",        SUM(decode(to_char(first_time, 'hh34'),'18',1,0)) "h28",        SUM(decode(to_char(first_time, 'hh34'),'19',1,0)) "h29",        SUM(decode(to_char(first_time, 'hh34'),'20',1,0)) "h30",        SUM(decode(to_char(first_time, 'hh34'),'21',1,0)) "h31",        SUM(decode(to_char(first_time, 'hh34'),'22',1,0)) "h32",        SUM(decode(to_char(first_time, 'hh34'),'23',1,0)) "h33"FROM    V$log_historygroup by trunc(first_time), to_char(first_time, 'Dy')Order by 1

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