OCP-1Z0-052-V8 02-92题

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92. You executed the following commands in an RMAN session for your database instance that has
failures:
RMAN> LIST FAILURE;
After some time, you executed the following command in the same session:
RMAN> ADVISE FAILURE;
But there are new failures recorded in the Automatic Diagnostic Repository (ADR) after the execution of
the last LIST FAILURE command. Which statement is true for the above ADVISE FAILURE command in
this scenario?
A.It produces a warning for new failures before advising for CRITICAL and HIGH failures.
B.It ignores new failures and considers the failures listed in the last LIST FAILURE command only.
C.It produces advice only for new failures and the failures listed in the last LIST FAILURE command are
ignored

D.It produces an error with recommendation to run the LIST FAILURE command before the ADVISE
FAILURE command.

 答案解析：

1、2窗口，首先里看一下文件的位置

sys@TESTDB> select file#,name from v$datafile;     FILE# NAME---------- --------------------------------------------------         1 /u01/app/oracle/oradata/testdb/system01.dbf         2 /u01/app/oracle/oradata/testdb/sysaux01.dbf         3 /u01/app/oracle/oradata/testdb/undotbs01.dbf         4 /u01/app/oracle/oradata/testdb/users01.dbf         5 /u01/app/oracle/oradata/testdb/example01.dbf         6 /u01/app/oracle/oradata/testdb/test1.dbf         7 /u01/app/oracle/oradata/testdb/test2.dbf7 rows selected.

2、 1窗口，做实验前先备份一下backup database,或backup tablespace test1和backup tablespace users，这里实验先会删除test1.dbf，后删除user01.dbf

全备份数据库

RMAN> backup database;Starting backup at 02-SEP-13using target database control file instead of recovery catalogallocated channel: ORA_DISK_1channel ORA_DISK_1: SID=129 device type=DISKchannel ORA_DISK_1: starting full datafile backup setchannel ORA_DISK_1: specifying datafile(s) in backup setinput datafile file number=00001 name=/u01/app/oracle/oradata/testdb/system01.dbfinput datafile file number=00002 name=/u01/app/oracle/oradata/testdb/sysaux01.dbfinput datafile file number=00005 name=/u01/app/oracle/oradata/testdb/example01.dbfinput datafile file number=00003 name=/u01/app/oracle/oradata/testdb/undotbs01.dbfinput datafile file number=00006 name=/u01/app/oracle/oradata/testdb/test1.dbfinput datafile file number=00007 name=/u01/app/oracle/oradata/testdb/test2.dbfinput datafile file number=00004 name=/u01/app/oracle/oradata/testdb/users01.dbfchannel ORA_DISK_1: starting piece 1 at 02-SEP-13channel ORA_DISK_1: finished piece 1 at 02-SEP-13piece handle=/u01/app/oracle/fast_recovery_area/TESTDB/backupset/2013_09_02/o1_mf_nnndf_TAG20130902T130124_929k37g6_.bkp tag=TAG20130902T130124 comment=NONEchannel ORA_DISK_1: backup set complete, elapsed time: 00:08:28channel ORA_DISK_1: starting full datafile backup setchannel ORA_DISK_1: specifying datafile(s) in backup setincluding current control file in backup setincluding current SPFILE in backup setchannel ORA_DISK_1: starting piece 1 at 02-SEP-13channel ORA_DISK_1: finished piece 1 at 02-SEP-13piece handle=/u01/app/oracle/fast_recovery_area/TESTDB/backupset/2013_09_02/o1_mf_ncsnf_TAG20130902T130124_929km1ll_.bkp tag=TAG20130902T130124 comment=NONEchannel ORA_DISK_1: backup set complete, elapsed time: 00:00:03Finished backup at 02-SEP-13

 或者备份test1表空间，users表空间已经在91题备份过

RMAN> backup tablespace test1;Starting backup at 02-SEP-13using target database control file instead of recovery catalogallocated channel: ORA_DISK_1channel ORA_DISK_1: SID=131 device type=DISKchannel ORA_DISK_1: starting full datafile backup setchannel ORA_DISK_1: specifying datafile(s) in backup setinput datafile file number=00006 name=/u01/app/oracle/oradata/testdb/test1.dbfchannel ORA_DISK_1: starting piece 1 at 02-SEP-13channel ORA_DISK_1: finished piece 1 at 02-SEP-13piece handle=/u01/app/oracle/fast_recovery_area/TESTDB/backupset/2013_09_02/o1_mf_nnndf_TAG20130902T125847_929jy9jw_.bkp tag=TAG20130902T125847 comment=NONEchannel ORA_DISK_1: backup set complete, elapsed time: 00:00:16Finished backup at 02-SEP-13

3、3窗口，os删除文件

 

[oracle@rtest ~]$ rm -rf /u01/app/oracle/oradata/testdb/test1.dbf[oracle@rtest ~]$ ls /u01/app/oracle/oradata/testdb/test1.dbfls: /u01/app/oracle/oradata/testdb/test1.dbf: No such file or directory

4、2窗口，强制关闭，并重启

sys@TESTDB> shutdown abort;ORACLE instance shut down.sys@TESTDB> startupORACLE instance started.Total System Global Area 2505338880 bytesFixed Size                  2230952 bytesVariable Size             553649496 bytesDatabase Buffers         1929379840 bytesRedo Buffers               20078592 bytesDatabase mounted.ORA-01157: cannot identify/lock data file 6 - see DBWR trace fileORA-01110: data file 6: '/u01/app/oracle/oradata/testdb/test1.dbf'

5、1窗口，进入rman恢复

RMAN> list failure;using target database control file instead of recovery catalogList of Database Failures=========================Failure ID Priority Status    Time Detected Summary---------- -------- --------- ------------- -------182        HIGH     OPEN      02-SEP-13     One or more non-system datafiles are missing

6、3窗口，此时又删除users01.dbf

[oracle@rtest ~]$ rm -rf /u01/app/oracle/oradata/testdb/users01.dbf[oracle@rtest ~]$ ls /u01/app/oracle/oradata/testdb/users01.dbfls: /u01/app/oracle/oradata/testdb/users01.dbf: No such file or directory

2窗口强制关闭，然后重启

sys@TESTDB> shutdown abort;ORACLE instance shut down.sys@TESTDB> startupORACLE instance started.Total System Global Area 2505338880 bytesFixed Size                  2230952 bytesVariable Size             553649496 bytesDatabase Buffers         1929379840 bytesRedo Buffers               20078592 bytesDatabase mounted.ORA-01157: cannot identify/lock data file 4 - see DBWR trace fileORA-01110: data file 4: '/u01/app/oracle/oradata/testdb/users01.dbf'

7、1窗口，接着第5步的下面输入，用advise failure，报错并退出

RMAN> advise failure;RMAN-06900: WARNING: unable to generate V$RMAN_STATUS or V$RMAN_OUTPUT rowRMAN-06901: WARNING: disabling update of the V$RMAN_STATUS and V$RMAN_OUTPUT rowsORACLE error from target database: ORA-03135: connection lost contactProcess ID: 475Session ID: 127 Serial number: 13RMAN-00571: ===========================================================RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============RMAN-00571: ===========================================================RMAN-00601: fatal error in recovery managerRMAN-03004: fatal error during execution of commandRMAN-04022: target database mount id 2608415880 does not match channel's mount id 2608385963RMAN-03002: failure of advise command at 09/02/2013 13:42:27ORA-03114: not connected to ORACLE

8、1窗口，重新rman进去，执行list failure-->advise failure-->repair failure步骤进行恢复。

RMAN> list failure;List of Database Failures=========================Failure ID Priority Status    Time Detected Summary---------- -------- --------- ------------- -------182        HIGH     OPEN      02-SEP-13     One or more non-system datafiles are missingRMAN> advise failure;List of Database Failures=========================Failure ID Priority Status    Time Detected Summary---------- -------- --------- ------------- -------182        HIGH     OPEN      02-SEP-13     One or more non-system datafiles are missinganalyzing automatic repair options; this may take some timeallocated channel: ORA_DISK_1channel ORA_DISK_1: SID=189 device type=DISKanalyzing automatic repair options completeMandatory Manual Actions========================no manual actions availableOptional Manual Actions=======================1. If file /u01/app/oracle/oradata/testdb/test1.dbf was unintentionally renamed or moved, restore it2. If file /u01/app/oracle/oradata/testdb/users01.dbf was unintentionally renamed or moved, restore itAutomated Repair Options========================Option Repair Description------ ------------------1      Restore and recover datafile 6; Restore and recover datafile 4   Strategy: The repair includes complete media recovery with no data loss  Repair script: /u01/app/oracle/diag/rdbms/testdb/testdb/hm/reco_3215015603.hmRMAN> repair failure;Strategy: The repair includes complete media recovery with no data lossRepair script: /u01/app/oracle/diag/rdbms/testdb/testdb/hm/reco_3215015603.hmcontents of repair script:   # restore and recover datafile   restore datafile 4, 6;   recover datafile 4, 6;   sql 'alter database datafile 4, 6 online';Do you really want to execute the above repair (enter YES or NO)? yexecuting repair scriptStarting restore at 02-SEP-13using channel ORA_DISK_1channel ORA_DISK_1: starting datafile backup set restorechannel ORA_DISK_1: specifying datafile(s) to restore from backup setchannel ORA_DISK_1: restoring datafile 00004 to /u01/app/oracle/oradata/testdb/users01.dbfchannel ORA_DISK_1: restoring datafile 00006 to /u01/app/oracle/oradata/testdb/test1.dbfchannel ORA_DISK_1: reading from backup piece /u01/app/oracle/fast_recovery_area/TESTDB/backupset/2013_09_02/o1_mf_nnndf_TAG20130902T130124_929k37g6_.bkpchannel ORA_DISK_1: piece handle=/u01/app/oracle/fast_recovery_area/TESTDB/backupset/2013_09_02/o1_mf_nnndf_TAG20130902T130124_929k37g6_.bkp tag=TAG20130902T130124channel ORA_DISK_1: restored backup piece 1channel ORA_DISK_1: restore complete, elapsed time: 00:00:03Finished restore at 02-SEP-13Starting recover at 02-SEP-13using channel ORA_DISK_1starting media recoverymedia recovery complete, elapsed time: 00:00:00Finished recover at 02-SEP-13sql statement: alter database datafile 4, 6 onlinerepair failure completeDo you want to open the database (enter YES or NO)? ydatabase opened

此题答案选A

           

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你好！ 这是你第一次使用 **Markdown编辑器** 所展示的欢迎页。如果你想学习如何使用Markdown编辑器, 可以仔细阅读这篇文章，了解一下Markdown的基本语法知识。

新的改变

我们对Markdown编辑器进行了一些功能拓展与语法支持，除了标准的Markdown编辑器功能，我们增加了如下几点新功能，帮助你用它写博客：

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3. 增加了 图片拖拽 功能，你可以将本地的图片直接拖拽到编辑区域直接展示；
4. 全新的 KaTeX数学公式 语法；
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8. 增加了 检查列表 功能。

功能快捷键

撤销：Ctrl/Command + Z
重做：Ctrl/Command + Y
加粗：Ctrl/Command + B
斜体：Ctrl/Command + I
标题：Ctrl/Command + Shift + H
无序列表：Ctrl/Command + Shift + U
有序列表：Ctrl/Command + Shift + O
检查列表：Ctrl/Command + Shift + C
插入代码：Ctrl/Command + Shift + K
插入链接：Ctrl/Command + Shift + L
插入图片：Ctrl/Command + Shift + G

合理的创建标题，有助于目录的生成

直接输入1次#，并按下space后，将生成1级标题。
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以此类推，我们支持6级标题。有助于使用TOC语法后生成一个完美的目录。

如何改变文本的样式

强调文本 强调文本

加粗文本 加粗文本

标记文本

删除文本

引用文本

H₂O is是液体。

2¹⁰ 运算结果是 1024.

插入链接与图片

链接: link.

图片:

带尺寸的图片:

当然，我们为了让用户更加便捷，我们增加了图片拖拽功能。

如何插入一段漂亮的代码片

去博客设置页面，选择一款你喜欢的代码片高亮样式，下面展示同样高亮的 代码片.

// An highlighted block var foo = 'bar'; 

生成一个适合你的列表

• 项目
  • 项目
    • 项目

1. 项目1
2. 项目2
3. 项目3

• 计划任务
• 完成任务

创建一个表格

一个简单的表格是这么创建的：

项目	Value
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设定内容居中、居左、居右

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SmartyPants

SmartyPants将ASCII标点字符转换为“智能”印刷标点HTML实体。例如：

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创建一个自定义列表

Markdown

Text-to- HTML conversion tool

Authors

John

Luke

如何创建一个注脚

一个具有注脚的文本。²

注释也是必不可少的

Markdown将文本转换为 HTML。

KaTeX数学公式

您可以使用渲染LaTeX数学表达式 KaTeX:

Gamma公式展示 $\Gamma (n)=(n-1)!\forall n\in \mathbb{N}$ 是通过欧拉积分

$$\Gamma (z)={\int }_0^{\infty }{t}^{z-1}{e}^{-t}dt.$$

你可以找到更多关于的信息 LaTeX 数学表达式here.

新的甘特图功能，丰富你的文章

gantt
        dateFormat  YYYY-MM-DD
        title Adding GANTT diagram functionality to mermaid
        section 现有任务
        已完成               :done,    des1, 2014-01-06,2014-01-08
        进行中               :active,  des2, 2014-01-09, 3d
        计划一               :         des3, after des2, 5d
        计划二               :         des4, after des3, 5d

• 关于 甘特图 语法，参考 这儿,

UML 图表

可以使用UML图表进行渲染。 Mermaid. 例如下面产生的一个序列图：:

张三 李四 王五 你好！李四, 最近怎么样? 你最近怎么样，王五？ 我很好，谢谢! 我很好，谢谢! 李四想了很长时间, 文字太长了 不适合放在一行. 打量着王五... 很好... 王五, 你怎么样? 张三 李四 王五

这将产生一个流程图。:

链接

长方形

圆

圆角长方形

菱形

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FLowchart流程图

我们依旧会支持flowchart的流程图：

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导出与导入

导出

如果你想尝试使用此编辑器, 你可以在此篇文章任意编辑。当你完成了一篇文章的写作, 在上方工具栏找到 文章导出 ，生成一个.md文件或者.html文件进行本地保存。

导入

如果你想加载一篇你写过的.md文件或者.html文件，在上方工具栏可以选择导入功能进行对应扩展名的文件导入，
继续你的创作。

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1. mermaid语法说明 ↩︎

2. 注脚的解释 ↩︎