OCP Oracle Database 11g Administrator Certified Professional Set 1

What is the proper procedure to recover a lost tempfile?


Options are :

  • Restore the backup copy of the tempfile from the backup media.
  • Re-create the tempfile with the alter tablespace command.
  • Re-create the tempfile with the create tempfile command.
  • Re-create the tempfile with the create tablespace command.
  • Copy an existing tempfile from another database.

Answer : Re-create the tempfile with the alter tablespace command.

Oracle 12c SQL Certified Associate 1Z0-071 Real Exam 2019 Set 5

What are three benefits of using ASM?


Options are :

  • Automatic recovery of failed disks
  • Ease of disk administration and maintenance

Answer : Ease of disk administration and maintenance

Upon starting your database, you receive the following error:

SQL> startup
ORACLE instance started.
Total System Global Area 171581440 bytes
Fixed Size 1298640 bytes
Variable Size 146804528 bytes
Database Buffers 20971520 bytes
Redo Buffers 2506752 bytes
Database mounted.
ORA-00313: open failed for members of log group 1 of thread 1
ORA-00312: online log 1 thread 1: '/oracle01/oradata/orcl/redo01.log'
ORA-00312: online log 1 thread 1: '/oracle01/oradata/orcl/redo01a.log'
You can choose from the following steps:
a. Restore the database datafiles.
b. Issue the alter database clear unarchived logfile group 1 command.
c. Issue the alter database open command.
d. Issue the alter database open resetlogs command.
e. Recover the database using point-in-time recovery.
f. Issue the Startup Mount command to mount the database.
g. Back up the database.

Which is the correct order of these steps in this case?


Options are :

  • f, e, d
  • a, f, e, d, g
  • a, f, c
  • The database cannot be recovered.
  • f, b, c, g

Answer : f, b, c, g

Which of the following is a benefit of ASM fast disk resync?


Options are :

  • Disk data is never lost.
  • The failed disk is automatically reformatted and then resynchronized to speed up the recovery process.
  • By default, the failed disk is not dropped from the disk group ever, protecting you from loss of that disk.
  • Failed disks are taken offline immediately but are not dropped.
  • Hot spare disks are automatically configured and added to the disk group.

Answer : Failed disks are taken offline immediately but are not dropped.

1Z0-238 R12 Oracle Install,Patch & Maintain Oracle APP Test Set 2

You have lost all your SYSTEM tablespace datafiles (system_01.dbf and system_02.dbf) and the database has crashed. What would be the appropriate order of operations to correct the situation?

a. Mount the database with the startup mount command.
b. Take the SYSTEM datafile offline with the alter database command.
c. Restore the SYSTEM_01.dbf datafile from backup media with the required archived redo logs.
d. Restore all SYSTEM tablespace–related datafiles from backup media.
e. Issue the recover tablespace SYSTEM command.
f. Issue the recover datafile SYSTEM_01.dbf command.
g. Open the database with the alter database open command.
h. Open the database with the alter database open resetlogs command.


Options are :

  • a, c, f, g
  • a, b, c, f, g
  • b, c, f, e, g
  • d, a, e, g
  • b, d, e, h

Answer : d, a, e, g

Which initialization parameter in an ASM instance specifies the disk groups to be automatically mounted at instance startup?


Options are :

  • ASM_DISKMOUNT
  • ASM_MOUNTGROUP
  • ASM_DISKGROUP
  • ASM_DISKSTRING

Answer : ASM_DISKGROUP

What components are present in an ASM instance?


Options are :

  • Control files
  • Database datafiles
  • SGA

Answer : SGA

OCA Oracle 12C Administration (1Z0-062) Practice Test Set 2

Which files are required for a full recovery of the database in ARCHIVELOG mode?


Options are :

  • Control file from a backup
  • Online redo logs
  • Database datafiles

Answer : Database datafiles

When an ASM instance receives a SHUTDOWN NORMAL command, what command does it pass on to all database instances that rely on the ASM instance's disk groups?


Options are :

  • None of the above
  • ABORT
  • IMMEDIATE
  • TRANSACTIONAL
  • NORMAL

Answer : None of the above

Which type of database file is spread across all disks in a disk group?


Options are :

  • Archived redo log files
  • Control files
  • Datafiles
  • Redo log files
  • All types of files are spread across all disks in the disk group.

Answer : All types of files are spread across all disks in the disk group.

OCA Oracle Database 11g Administrator Certified Associate Set 4

You have discovered that one of three control files has been lost. What steps would you follow to recover that control file?

a. Shut down the database.
b. Restore a control-file copy from backup media.
c. Use the create control file command to create a new control file.
d. Copy the backup control file into place.
e. Create a new copy of the control file from one of the surviving control files.
f. Recover the database using the recover database using backup controlfile command.
g. Start up the database.


Options are :

  • a, b, f, g
  • c, f, g
  • a, f, g
  • a, e, g
  • a, d, f, g

Answer : a, e, g

On the development database rac0, there are six raw devices: /dev/raw/raw1 through
/dev/raw/raw6. /dev/raw/raw1 and /dev/raw/raw2 are 8GB each, and the rest are 6GB
each. An existing disk group +DATA1, of NORMAL REDUNDANCY, uses /dev/raw/raw1 and
/dev/raw/raw2. Which series of the following commands will drop one of the failure
groups for +DATA1, create a new disk group +DATA2 using two of the remaining four raw
devices, and then cancel the drop operation from +DATA1?


Options are :

  • ALTER DISKGROUP DATA1 DROP DISK DATA1_0001;CREATE DISKGROUP DATA2 HIGH REDUNDANCY FAILGROUP DATA1A DISK '/dev/raw/raw3' FAILGROUP DATA1B DISK '/dev/raw/raw4;'ALTER DISKGROUP DATA1 UNDROP DISKS;
  • ALTER DISKGROUP DATA1 DROP DISK DATA1_0001;CREATE DISKGROUP DATA2 NORMAL REDUNDANCY FAILGROUP DATA1A DISK '/dev/raw/raw3' FAILGROUP DATA1B DISK '/dev/raw/raw4';ALTER DISKGROUP DATA1 UNDROP DATA1_0001;
  • ALTER DISKGROUP DATA1 DROP DISK DATA1_0001 ADD DISK GROUP DATA2 NORMAL REDUNDANCY FAILGROUP DATA1A DISK '/dev/raw/raw3' FAILGROUP DATA1B DISK '/dev/raw/raw4';ALTER DISKGROUP DATA1 UNDROP DISKS;
  • ALTER DISKGROUP DATA1 DROP DISK DATA1_0001;CREATE DISKGROUP DATA2 NORMAL REDUNDANCY FAILGROUP DATA1A DISK '/dev/raw/raw3' FAILGROUP DATA1B DISK '/dev/raw/raw4';ALTER DISKGROUP DATA1 UNDROP DISKS;

Answer : ALTER DISKGROUP DATA1 DROP DISK DATA1_0001;CREATE DISKGROUP DATA2 NORMAL REDUNDANCY FAILGROUP DATA1A DISK '/dev/raw/raw3' FAILGROUP DATA1B DISK '/dev/raw/raw4';ALTER DISKGROUP DATA1 UNDROP DISKS;

What is the default AU size of an ASM disk group? What is the maximum AU size in an ASM disk group?


Options are :

  • 1MB default, 64MB maximum
  • 256KB default, 1024MB maximum
  • 10MB default, 126PB maximum
  • 64KB default, 1EB maximum
  • 100KB default, 10TB maximum

Answer : 1MB default, 64MB maximum

1Z0-206 Oracle E-Business Suite R12 SystemAdministrator Exam Set 3

Which files will you need to perform a full recovery of a database backed up in NOARCHIVELOG mode? (Choose all that apply.)


Options are :

  • Flashback logs
  • Archived redo logs
  • Control files

Answer : Control files

As DBA for the Rebel Alliance you have decided that you need to facilitate some redundancy in your database. Using ASM, you want to create a disk group that will provide for the greatest amount of redundancy for your ASM data (you do not have advanced SAN mirroring technology available to you, unfortunately). Which of the following commands would create a disk group that would offer the maximum in data redundancy?


Options are :

  • CREATE DISKGROUP dg_alliance1 MAXIMUM REDUNDANCY failgroup diskcontrol1 DISK 'c:\oracle\asm_disk\_file_disk1' NAME file_ disk1 failgroup diskcontrol2 DISK 'c:\oracle\asm_disk\_file_disk2' NAME file_ disk2 failgroup diskcontrol2 DISK 'c:\oracle\asm_disk\_file_disk3' NAME file_ disk3 failgroup diskcontrol2 DISK 'c:\oracle\asm_disk\_file_disk4' NAME file_ disk4;
  • None of the above
  • CREATE DISKGROUP dg_alliance1 NORMAL REDUNDANCY failgroup diskcontrol1 DISK 'c:\oracle\asm_disk\_file_disk3' NAME file_diska1 failgroup diskcontrol2 DISK 'c:\oracle\asm_disk\_file_disk4' NAME file_diskb1
  • CREATE DISKGROUP dg_alliance1 EXTERNAL REDUNDANCY failgroup diskcontrol1 DISK 'c:\oracle\asm_disk\_file_disk3' NAME file_diska1;
  • CREATE DISKGROUP dg_alliance1 HIGH REDUNDANCY failgroup diskcontrol1 DISK 'c:\oracle\asm_disk\_file_disk1' NAME file_ disk1 failgroup diskcontrol2 DISK 'c:\oracle\asm_disk\_file_disk2' NAME file_ disk2 failgroup diskcontrol2 DISK 'c:\oracle\asm_disk\_file_disk3' NAME file_ disk3;

Answer : CREATE DISKGROUP dg_alliance1 HIGH REDUNDANCY failgroup diskcontrol1 DISK 'c:\oracle\asm_disk\_file_disk1' NAME file_ disk1 failgroup diskcontrol2 DISK 'c:\oracle\asm_disk\_file_disk2' NAME file_ disk2 failgroup diskcontrol2 DISK 'c:\oracle\asm_disk\_file_disk3' NAME file_ disk3;

Which are the correct steps, in order, to deal with the loss of an online redo log if the database has not yet crashed?

a. Issue a checkpoint.
b. Shut down the database.
c. Issue an alter database open command to open the database.
d. Startup mount the database.
e. Issue an alter database clear logfile command.
f. Recover all database datafiles.


Options are :

  • a, b, d, e, c
  • a, b, c, d
  • b, d, a, c
  • b, d, e, c
  • b, f, d, f, c

Answer : a, b, d, e, c

1Z0-520 Oracle EBS R12 Purchasing Essentials Practice Exam Set 7

Which background process coordinates the rebalance activity for disk groups?


Options are :

  • OSMB
  • RBAL
  • ASMn
  • None of the Above
  • ORBn

Answer : RBAL

What is the result of increasing the value of the parameter ASM_POWER_LIMIT during a rebalance operation?


Options are :

  • There is no ASM_POWER_LIMIT setting used in ASM.
  • The ASM rebalance operation will consume fewer resources and complete in a longer amount of time.
  • The ASM rebalance operation will likely consume fewer resources and complete in a shorter amount of time.
  • The ASM rebalance operation will be parallelized and should complete in a shorter amount of time.

Answer : The ASM rebalance operation will be parallelized and should complete in a shorter amount of time.

Your database has experienced a loss of datafile users_01.dbf, which is associated with a tablespace called USERS. The database is still running. Which answer properly describes the order of the steps that you would use to recover from this error?x

a. Shut down the database.
b. Take the users_01.dbf datafile offline with the alter database command.
c. Restore the users_01.dbf datafile from backup media with the required archived redo logs.
d. Restore all users tablespace-related datafiles from backup media.
e. Issue the recover tablespace users command.
f. Issue the recover datafile users_01.dbf command.
g. Start up the database.
h. Bring the users_01.dbf datafile online with the alter database command.


Options are :

  • a, c, f, g
  • b, c, f, e, g
  • b, c, f, h
  • a, b, c, f, g, h
  • a, b, c, f, g

Answer : b, c, f, h

1Z0-516 Oracle EBS R12.1 General Ledger Essentials Exam Set 1

How can you reverse the effects of an ALTER DISKGROUP … DROP DISK command if it has not yet completed?


Options are :

  • Issue the ALTER DISKGROUP … ADD DISK command.
  • Retrieve the disk from the Recycle Bin after the operation completes.
  • Issue the ALTER DISKGROUP … UNDROP DISKS command.
  • Issue the ALTER DISKGROUP … DROP DISK CANCEL command.

Answer : Issue the ALTER DISKGROUP … UNDROP DISKS command.

As soon as you discover that you have lost an online redo log, if the database is still functioning, what should be your first action?


Options are :

  • Shut down the database.
  • Checkpoint the database.
  • Back up the database.
  • Clear the online redo log.
  • Call Oracle support.

Answer : Checkpoint the database.

What methods of point-in-time recovery are available?


Options are :

  • Sequence number-based
  • Transaction number-based

Answer : Sequence number-based

OCP Oracle Database 11g Administrator Certified Professional Set 2

You want to migrate your database to ASM, so you've done a clean shutdown, made a closed backup of the entire database, noted the location of your control files and online redo log files, and changed your spfile to use OMF. The last step is to run an RMAN script to do the conversion. Using the following steps, what is the correct order in which the following RMAN commands should be executed?

1. STARTUP NOMOUNT
2. ALTER DATABASE OPEN RESETLOGS
3. SQL "ALTER DATABASE RENAME 'logfile1 path' TO '+dgrp4 '" # plus all other logfiles
4. SWITCH DATABASE TO COPY
5. BACKUP AS COPY DATABASE FORMAT '+dgrp4'
6. ALTER DATABASE MOUNT
7. RESTORE CONTROLFILE FROM 'controlfile_location'


Options are :

  • 7, 3, 1, 5, 6, 2, 4
  • 1, 7, 6, 5, 4, 3, 2
  • 5, 1, 2, 7, 4, 6, 3
  • 2, 5, 3, 1, 7, 6, 4

Answer : 1, 7, 6, 5, 4, 3, 2

To reference existing ASM files, you need to use a fully qualified ASM filename. Your development database has a disk group named DG2A, the database name is DEV19, and the ASM file that you want to reference is a datafile for the USERS02 tablespace. Which of the following is a valid ASM filename for this ASM file?


Options are :

  • +DG2A/dev19/users02/datafile.701.2
  • +DG2A.701.2
  • +DG2A/datafile/dev19.users.02.701.2
  • +DG2A/dev19/datafile/users02.701.2
  • dev19/+DG2A/datafile/users02.701.2

Answer : +DG2A/dev19/datafile/users02.701.2

When starting up your ASM instance, you receive the following error:
SQL> startup pfile=?/dbs/init+ASM.ora
ASM instance started
Total System Global Area 104611840 bytes
Fixed Size 1298220 bytes
Variable Size 78147796 bytes
ASM Cache 25165824 bytes
ORA-15032: not all alterations performed
ORA-15063: ASM discovered an insufficient number of disks for disk group
"DGROUP3"
ORA-15063: ASM discovered an insufficient number of disks for disk group
"DGROUP2"
ORA-15063: ASM discovered an insufficient number of disks for disk group
"DGROUP1"
In trying to determine the cause of the problem, you issue this query:
SQL> show parameter asm
NAME TYPE VALUE
------------------------------------ ----------- -------------------------_
asm_allow_only_raw_disks boolean FALSE
asm_diskgroups string DGROUP1, DGROUP2, DGROUP3
asm_diskstring string
asm_power_limit integer 1
asm_preferred_read_failure_groups string
What is the cause of the error?


Options are :

  • The ASM_DISKSTRING parameter is not set; therefore disk discovery is not possible.
  • The format of the ASM_DISKGROUPS parameter is incorrect. It should reference the disk group numbers, not the names of the disk groups.
  • There is insufficient information to solve this problem.
  • The ASM_POWER_LIMIT parameter is incorrectly set to 1. It should be set to the number of disk groups being attached to the ASM instance.
  • The ASM_DISKGROUPS parameter is configured for three disk groups: DGROUP1, DGROUP2, and DGROUP3. The underlying disks for these disk groups have apparently been lost.

Answer : The ASM_DISKSTRING parameter is not set; therefore disk discovery is not possible.

1Z0-520 Oracle EBS R12 Purchasing Essentials Practice Exam Set 7

What will be the result of the following configuration?
Log_archive_dest_1='location=c:\oracle\arch\mydb'
Log_archive_dest_2='location=z:\oracle\arch\mydb'


Options are :

  • Archived redo logs will be created in two different locations by the ARCH process.
  • An error will occur during database startup because the second parameter is not valid.
  • An error will occur during database startup since you are trying to create archived redo logs in two different locations.
  • Archived redo logs will be created in two different locations by the LGWR process.
  • Neither parameter setting is valid, so the database will not start up.

Answer : Archived redo logs will be created in two different locations by the ARCH process.

Oracle 1Z0-516 EBS R12 General Essential Practice Exam Set 16

What is the proper command to shut down the database in a consistent manner?


Options are :

  • Shutdown abort
  • shutdown immediate
  • Shutdown nowait
  • shutdown halt
  • Shutdown kill

Answer : shutdown immediate

What are the different logging modes available in Oracle Database 11g? (Choose two.)


Options are :

  • LOGGING mode
  • NOARCHIVELOG mode
  • HOTDATABASE mode
  • NOLOG mode

Answer : NOARCHIVELOG mode

Another DBA issues a shutdown abort command on a database on which you were running an online backup. What will happen when you try to restart the database?


Options are :

  • The database will open with the file in hot backup mode. You can restart the backup at any time.
  • The datafile in hot backup mode will be corrupted and you will have to recover it.
  • Oracle will automatically take the datafile out of hot backup mode and then open the database.
  • Oracle will automatically take the datafile out of hot backup mode, generate a warning message, and then open the database.
  • Oracle will generate an error when trying to open the database, indicating that a datafile is in hot backup mode. You will need to correct this error before you can open the database.

Answer : Oracle will generate an error when trying to open the database, indicating that a datafile is in hot backup mode. You will need to correct this error before you can open the database.

OCA Oracle Database 11g Administrator Certified Associate Set 4

What is the correct order of steps to perform an online database backup?
a. alter database begin backup;
b. alter database end backup;
c. Back up the database datafiles.
d. Back up the archive log files.
e. alter system switch logfile;


Options are :

  • e, d, a, b, c
  • a, b, c, d, e
  • a, c, b, e, d
  • d, b, c, a, e
  • a, c, b, d, e

Answer : a, c, b, e, d

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