QUESTION 66 To recover from the loss of the entire database, including all current control files, al

QUESTION 66

To recover from the loss of the entire database, including all current control files, all online redo log files,

and all parameter files, what backups are required, at a minimum, to restore the database successfully?

(Choose all that apply.)

A. Archived redo logs generated after the last datafile backups

B. One autobackup of the control file

C. One autobackup of the SPFILE

D. A backup of all datafiles i E The password file

Correct Answer: ABD

Section: (none)

Explanation

Explanation/Reference:

/* simulate loss of everything */

SQL> shutdown abort;

ASMCMD [+data/oel5_1] > rm CONTROLFILE/*

You may delete multiple files and/or directories.

Are you sure? (y/n) y

ASMCMD [+data/oel5_1] > rm DATAFILE/*

You may delete multiple files and/or directories.

Are you sure? (y/n) y

ASMCMD [+data/oel5_1] > rm ONLINELOG/*

You may delete multiple files and/or directories.

Are you sure? (y/n) y

ASMCMD [+data/oel5_1] > rm PARAMETERFILE/*

You may delete multiple files and/or directories.

Are you sure? (y/n) y

ASMCMD [+data/oel5_1] > rm TEMPFILE/*

You may delete multiple files and/or directories.

Are you sure? (y/n) y

RMAN> startup nomount;

startup failed: ORA-01078: failure in processing system parameters

ORA-01565: error in identifying file '+DATA/oel5_1/spfileoel5_1.ora'

ORA-17503: ksfdopn:2 Failed to open file +DATA/oel5_1/spfileoel5_1.ora ORA-

15056: additional error message

ORA-17503: ksfdopn:2 Failed to open file +DATA/oel5_1/spfileoel5_1.ora ORA-

15173: entry 'spfileoel5_1.ora' does not exist in directory 'oel5_1' ORA-06512: at

line 4

starting Oracle instance without parameter file for retrieval of spfile Oracle

instance started

in rman logs dbid saved

[oracle@oel5-1 ~]$ rman target / catalog rcat/passwd@oel5_2

Recovery Manager: Release 11.2.0.3.0 - Production on Mon Mar 25 10:20:30 2013

Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved. connected to

target database (not started)

connected to recovery catalog database

RMAN> startup nomount;

startup failed: ORA-01078: failure in processing system parameters ORA-

01565: error in identifying file '+DATA/oel5_1/spfileoel5_1.ora'

ORA-17503: ksfdopn:2 Failed to open file +DATA/oel5_1/spfileoel5_1.ora ORA-15056:

additional error message

ORA-17503: ksfdopn:2 Failed to open file +DATA/oel5_1/spfileoel5_1.ora ORA-15173:

entry 'spfileoel5_1.ora' does not exist in directory 'oel5_1'

ORA-06512: at line 4

starting Oracle instance without parameter file for retrieval of spfile Oracle

instance started

RMAN> set DBID=2197396657

RMAN> list backup of spfile;

List of Backup Sets

===================

................................................................

BS Key Type LV Size Device Type Elapsed Time Completion Time

------- ---- -- ---------- ----------- ------------ ---------------

1486 Full 9.67M DISK 00:00:00 25-MAR-13

BP Key: 1488 Status: AVAILABLE Compressed: NO Tag: TAG20130325T095514

Piece Name: +FRA/oel5_1/autobackup/2013_03_25/s_810986114.296.810986115

SPFILE Included: Modification time: 24-MAR-13

SPFILE db_unique_name: OEL5_1

RMAN> restore spfile from '+FRA/oel5_1/autobackup/2013_03_25/s_810986114.296.810986115';

.....................

RMAN> set DBID=2197396657

executing command: SET DBID

database name is "OEL5_1" and DBID is 2197396657

RMAN> unregister database;

database name is "OEL5_1" and DBID is 2197396657

Do you really want to unregister the database (enter YES or NO)? yes database

unregistered from the recovery catalog

RMAN> shutdown abort; Oracle

instance shut down

SQL> startup mount; ORACLE

instance started.

Total System Global Area 1369579520 bytes Fixed

Size 2228224 bytes

Variable Size 469762048 bytes

Database Buffers 889192448 bytes Redo

Buffers 8396800 bytes

ORA-00205: error in identifying control file, check alert log for more info

RMAN> restore controlfile from autobackup;

Starting restore at 25-MAR-13

using target database control file instead of recovery catalog

allocated channel: ORA_DISK_1

channel ORA_DISK_1: SID=134 device type=DISK

recovery area destination: +FRA

database name (or database unique name) used for search: OEL5_1

channel ORA_DISK_1: AUTOBACKUP +fra/OEL5_1/AUTOBACKUP/2013_03_25/

s_810986114.296.810986115 found in the recovery area

AUTOBACKUP search with format "%F" not attempted because DBID was not set

channel ORA_DISK_1: restoring control file from AUTOBACKUP +fra/OEL5_1/

AUTOBACKUP/2013_03_25/s_810986114.296.810986115

channel ORA_DISK_1: control file restore from AUTOBACKUP

complete output file

name=+DATA/oel5_1/controlfile/current.275.810988179 output file

name=+FRA/oel5_1/controlfile/current.278.810671217 Finished restore

at 25-MAR-13

RMAN> alter database mount;

RMAN> restore database; RMAN>

recover database;

SQL> alter database open resetlogs;