Please note most of these questions are gathered by me from students who have already taken certification exam and from google.
Hope you will find these useful !! All the best!
Oracle Database related questions from SAP Basis/Netweaver Certification point of view
TADM51
1 - Is data written to the Oracle transaction
logs (redo logs) before or after the information is written in the database
files?
Click on the button next to the right answer.
A.
Before
B.
After
C.
Simultaneously
D.
The
priority and sequence of database writes and transaction log writes is
controlled by the parameter
"dblg_after" in the ORACLE initialization file.
E.
Randomly,
sometimes before, sometimes after.
2 - What is the primary function of the
$ORACLE HOME/saparch directory?
Click on the button next to the right answer.
A.
The
saparch directory is a work area for the R/3 database utilities.
B.
The
saparch directory is a work area for the R/3 Instance tasks.
C.
The
saparch directory is used as the holding area for online database backups
instead of writing them to tape.
D.
The
saparch directory holds the archived database log files.
E.
The
saparch directory contains the current database transaction log files.
3 - Which customer specific specific files
does sapdba save during an offline backup to insure that the Oracle database
could be restored to a consistent state in case of problems?
Click on the button next to the right answer.
A.
The
Oracle executables files.
B.
The
Oracle database transaction log files and archived log files.
C.
The
tablespace data files, database transaction log files, and the database control
file.
D.
The
database archived log files and R/3 Syslog file.
E.
The
database transaction log files and the R/3 transport structures.
4 - Which customer specific files must be
saved during an online database backup to be able to restore the Oracle
database to a consistent state ?
Click on the button next to the right answer.
A.
The
Oracle executables, database parameter file, and the tablespace data files.
B.
The
Oracle online redo log files and the database control file.
C.
The archived
log files, database control file and the Oracle executables.
D.
The
tablespace data files, database control file, and all database redo logs
written during the online backup.
E.
The
tablespace data files, database control file, and the database parameter file.
5 -
What is the primary function of the $ORACLE_HOME/sapbackup directory?
Click on the button next to the right answer.
A.
The
sapbackup directory is used for database backups which are written to disk.
B.
The
sapbackup directory is a work area for the R/3 Instance tasks.
C.
The
sapbackup directory is the temporary holding area for the database transaction
logs (redo logs) before they are automatically written to tape.
D.
The
sapbackup directory holds the archived database log files.
E.
The
sapbackup directory is used by the R/3 database utilities during database
reorganizations.
6 - What is the name of the brbackup and
brarchive parameter file for an Oracle database used by an R/3 Central Instance
with SAP System ID C11?
Click on the button next to the right answer.
A.
initC11.ini
B.
initC11.ora
C.
initC11.sap
D.
sapdba.ini
E.
initC11.dba
7 - When using a tape device that supports
hardware compression which of the following statements is true ?
Note: There is more than one right answer!
Click on the buttons next to the right answers.
A.
The
tape_address and tape_address rew init<SID>.sap parameters are
automatically calculated based upon the value of the "compression"
parameter.
B.
Drivers
for hardware compression must be specified for the tape_address and
tape_address rew parameters in the init<SID>.sap file.
C.
The
compression ratio is calculated using "brbackup -k only" immediately
after installation and should be repeated at least once a month to update
compression ratios.
D.
The
compression ratio should be calculated using "brbackup -k only"
immediately after installation and never needs to be repeated.
E.
The
"compression" parameter should be set to "hardware" in the
init<SID>.sap file.
8 -
Sapdba and the Computer Center Management System (CCMS) use operating system
level programs for certain database administration tasks. Which program would
be called by CCMS for backing up the data files for the PSAPBTABD and PSAPBTABI
tablespaces?
Click on the button next to the right answer.
A.
Brarchive
B.
Brconnect
C.
sapdba
–b
D.
brbackup
E.
backoffl
9 - What are the 3 different Oracle database
startup modes?
Click on the button next to the right answer.
A.
Warm,
cold, maintenance
B.
Mount,
nomount, open
C.
Online,
offline, utility
D.
Level 1,
level 2, level 3
E.
Normal , restrict, utility
10 - What are the 3 different Oracle database
shutdown modes?
Click on the button next to the right answer.
A.
Warm,
cold, maintenance
B.
Level 1,
level 2, level 3
C.
Normal,
immediate, abort
D.
Regular,
active, passive
E.
Standard,
now, kill
11 - What is the primary purpose of the
$ORACLE_HOME/sapreorg directory
(Windows NT: $ORACLE_HOME\sapreorg)?
Click on the button next to the right answer.
A.
The
sapreorg directory is a work area for the R/3 database utilities.
B.
The
sapreorg directory is a work area for the R/3 Dialog Instance Tasks.
C.
The sapreorg
directory is used as the holding area for online database backups instead of
writing them to tape.
D.
The
sapreorg directory holds the database transaction log files.
E.
The
sapreorg directory contains the archived database log files.
12 - Based upon the information in the
initial sapdba program menu, what is the name of the parameter file used by
Oracle when the database is started?
The name of the Oracle parameter file
is:spfilesid.ora, initsid.ora
Type
the correct file name in the field provided.
13 - What is the purpose of the Oracle
"OPS$connect" function?
Click on the button next to the right answer.
A.
OPS$connect
authorization allows an operating system user to connect to the database
without being prompted for a password.
B.
OPS$connect
is an Oracle command enabling whoever executes it to administer the database
without using sqldba.
C.
OPS$connect
is used in Oracle Parallel Server installations to enable remote database
connections over a LAN.
D.
OPS$connect
authorization is required of all database users and is required for connection
to the database.
E.
OPS$connect
enables the R/3 System saposcol process to communicate and exchange data with the database.
14 - What is the name of the alert log file
for an Oracle database using a system identifier (SID) of C11?
Click on the button next to the right answer.
A.
ora_log_C11.log
B.
ora_log_C11.trc
C.
alert_C11.log
D.
alert_C11.trc
E.
orasrv.log
15 - What happens if a table wants to
allocate another extent but there is not enough contiguous free space in the
tablespace?
Click on the button next to the right answer.
A.
The
extent is allocated in another tablespace.
B.
The
Oracle error message ORA-1653 is sent to the Syslog file and to the ABAP/4
short dump.
C.
The
extent is distributed across the free space that is available.
D.
Oracle dynamically
reorganizes the tablespace to make all available space contiguous.
E.
The
database switches into maintenance mode and sends a system message to the
database administrator.
16 - What action needs to be taken when
Oracle returns an ORA-1653 error, failure to allocate an extent for a table in
a specific tablespace?
Click on the button next to the right answer.
A.
The
tablespace should be moved to a faster disk so that Oracle can find the extents
quicker.
B.
The
tablespace size should be increased by adding 1 or more datafiles.
C.
This is
an Oracle internal error message which should be registered with Oracle
immediately.
D.
The
database must be shutdown immediately to avoid damage.
E.
The
affected table should be dropped to avoid similar problems in the future.
17 - Under which circumstances does a
table/index have to be reorganized?
Click on the button next to the right answer.
A.
If the
extents belonging to the table/index are distributed across several data files.
B.
If a log
switch occurs before a database commit is completed.
C.
If the
tablespace overflows during a redo log file switch.
D.
If an
archiver stuck situation occurs during a write to the table/index.
E.
If the
table/index reaches the upper limit for the MAXEXTENTS parameter value when
attempting to allocate another extent.
18 - Which Oracle component dynamically
maintains information about the status of the database redo logs, database
mode, names and paths of database files, and is essential during a database
recovery?
Click on the button next to the right answer.
A.
The
Oracle parameter file, init<SID>.ora.
B.
Each
tablespace data file contains this data for the whole database.
C.
The
Oracle control file, cntrl<SID>.dbf.
D.
The SGA
definition file, sgadef<SID>.def.
E.
The
sapdba parameter file, init<SID>.dba.
19 - An Instance error occurs when 1 or more
Oracle background processes become corrupted. What actions should the database
administrator take to correct the problem?
Click on the button next to the right answer.
A.
This is
a serious error. Call the Oracle hotline.
B.
Shutdown
the operating system and reinstall the Oracle software.
C.
Shutdown
abort and startup open. The SMON process will use the current redo log files
and checkpoint information from the control files to execute an automatic
instance recovery upon database startup.
D.
Shutdown
the operating system and turn all hardware off. After the hardware cools off
start everything up again and execute Orainst using the repair option.
E.
Restore
all missing files, apply the offline redo logs, update the control files, and
execute the startup open command.
20 - Which files must be restored from tape
to allow a full database restore and recovery ?
Click on the button next to the right answer.
A.
Database
control file, tablespace data files, and the database alert log.
B.
Tablespace
data files, database control file, and all archived database transaction logs
created since the last full backup.
C.
$ORACLE_HOME,
Oracle parameter file, tablespace data files.
D.
Database
control file, tablespace data files, R/3 Syslog, R/3 Transport directory.
E.
Oracle
parameter file, tablespace data files, and the Oracle control file.
21 - The R/3 System Oracle database has 4
online redo logs, also known as database transaction logs. Each online redo log
has a mirrored copy. What is the effect of a log file switch?
Click on the button next to the right answer.
A.
The
current online redo log gets copied to its mirrored copy, upon completion the
next online redo log becomes open for writing.
B.
The
database alternates between writing to the online and offline redo log files.
C.
The
database switches between writing to the original redo log files and the
mirrored redo log files.
D.
The
current R/3 Syslog file gets copied to the saparch directory and a new Syslog
file is created.
E.
The
current online redo log gets closed and the next online redo log gets opened
for writing. The ARCH process gets triggered to begin backing up the recently
closed redo log.
22 - Which statement is true of online Oracle
database backups ?
Click on the button next to the right answer.
A.
Users
may only read data and may not enter data until after the backup is done.
B.
Database
transaction logs (online redo logs) are not written during online backups.
C.
The
tablespace data files and control file comprise the complete online backup and
are all that is necessary for restoring the database to a consistent status.
D.
The
database must be running in archivelog mode.
E.
Online
database backups are not supported by Oracle.
23 - Given Oracle database with system ID
C11. If tablespace PSAPBTABD has been extended 200 MB by adding another
datafile which of the following statements is true?
Click on the button next to the right answer.
A.
In the
event of a full database restore the new tablespace data file will be
automatically created based upon information in the initC11.ora file.
B.
All data
files for PSAPBTABD should be backed up along with the database control file to
maintain database recoverability.
C.
The
database should be shutdown and started up again to register the existence of
the new file in the Oracle internal system tables.
D.
The data
files for PSAPBTABD, the control file, and the redo logs must be backed up to
maintain database recoverability.
E.
An
R3INST database copy should be run to create a clean copy of the complete
database.
24 - What is the
highest priority when planning the distribution of the database transaction
logs, mirrored transaction logs, archived transaction logs, and tablespace data
files over multiple logical device groups?
Click on the
button next to the right answer.
A. Better performance through more
hardware.
B. More flexibility in case of hardware
failure.
C. Easier database backups and quicker
restores.
D. Higher data security and easier
administration.
E. To make the system physically more
modular for transport reasons.
25 - Which of the following oracle
parameters should never be modified in the init<SID>.ora file?
Note: There is more than one right
answer! Click on the buttons next to the right answers.
A. db_block_buffers
B. db_block_size
C. db_name
D. controlfiles
E.
shared_pool_size
26
- Which of the following configurations would have the slightest impact upon
data security and/or performance?
Click on the button
next to the right answer.
A. Operating system swap and Oracle
tablespace data files installed on the same physical disk(s).
B. Operating system swap and SAP kernel (executable
files) installed on the same physical disk(s).
C. Operating system swap and Oracle
database transaction logs (redo logs) installed on the same disk(s).
D. Operating system swap and the /usr/sap
directory on the same physical disk(s).
E. Oracle database archived log files
(offline redo logs) accessed over a shared (or NFS) directory connection.
27 - The physical separation of
database logs from their mirror copies means?
Click on the button next to the right
answer.
A. Using physically separate partitions of
a physical disk.
B. Using physically separate disks.
C. Using physically separate disks in the
same logical device group.
D. Using generic database utilities to
split the flow of data between randomly chosen operating system directories.
E. Use of database specific utilities to
fork log backups to 2 physically separate backup media.
28 - Which of the following Oracle
parameters should be modified in the init<SID>.ora file to enlarge the
shared memory usage for the Oracle database instance?
Note: There is more than one
right answer! Click on the buttons next to the right answers.
A. log_archive_dest
B. db_block_size
C. rollback_segments
D. shared_pool_size
E. db_block_buffers
29. brbackup tool can create a database
backup when the database is up and running or when it has been shutdown. During
an online database backup which of the following is TRUE? Click on the
button next to the right answer.
A. Users must stop
entering data but may continue working using read-only transactions.
B. Users
must stop working because their work would be unrecoverable in case of problems
with the backup.
C.Users may
continue working without interruption.
D.Power-users may continue working but data-entry users must log off.
E.Users must log off until the online backup
is started but then may continue working
30. Which of
the following statements are correct in regard to using a single run of BRBACKUP to save both the database
files and the offline redo log files?
Note! More than one answer is correct.
Please click on the buttons next to the correct answers.
A.
BRARCHIVE is started immediately after the
database backup is complete: no further intervention by the database
administrator is necessary.
B.
This technique can only be used for offline
database backups, not online backups.
C.
The database backup and the backup of the
offline redo log files must fit on one tape because changing tapes is not
supported.
D.
You can backup the database using multiple
tape devices in parallel.
E.
The tapes used must have been initialized by
BRBACKUP.
31. What
happens during the startup of an Oracle database?
Note! More than one answer is correct.
Please click on the buttons next to the correct answers.
A.
The SGA is created in shared memory according
to the parameter settings in the configuration file init<SID>.ora.
B.
The Oracle background and shadow processes
are created.
C.
In the mount phase, all copies of the control
file are opened.
D.
If necessary, Oracle automatically performs
an instance recovery.
E.
As the last step, the online redo log files
are cleared and the data files are opened.
32. What
happens during the shutdown of an Oracle database?
Note! More than one answer is correct.
Please click on the buttons next to the correct answers.
A.
When you shutdown the database with the NORMAL option, the database system disconnects all users
before shutting down the database.
B.
When you shutdown the database with the NORMAL
C.
When you shutdown the database with the ABORT
or IMMEDIATE option, open transactions are rolled back before the database is
shut down.
D.
When you shut down the database with the
ABORT option, the R/3 system is shut down, too.
E.
Shutting down the database with the ABORT
option always requires an instance recovery at the next database startup.
33. Which of
the following statements express part of the SAP-recommended strategy for
creating and updating the table statistics used by the cost-based optimizer?
Note! More than one answer is correct.
Please click on the buttons next to the correct answers.
A.
No statistics are created for R/3 pool and
cluster tables.
B.
Statistics are created for all transparent
tables that have no statistics.
C.
The table DBSTATC can be used to trigger an
exact computation of the statistics of specific tables.
D.
The update for table statistics refreshes all
transparent tables.
E. The table
DBSTATC can be used to detect which table statistics need to be refreshed.
34. What happens if
a table wants to allocate another extent but there is not enough contiguous
free space in the tablespace? Click on the button next to the right
answer.
A.
Please click on the button next to the
correct answer.
B.
The extent is allocated in another
tablespace.
C.
The extent is distributed across the free
space that is available.
D.
The Oracle error message ORA 1653 is sent to
the file SYSLOG and to the ABAP short dump.
E.
Oracle dynamically reorganizes the tablespace
to make all available space contiguous.
F.
The database switches into maintenance mode
and sends a system message to the database administrator.
35. When the
R/3 update task aborts with an Oracle error ORA1653 - failure to allocate an
extent for a table in a specific tablespace - what action needs to be taken?
Note! More than one answer is correct.
Please click on the buttons next to the correct answers.
A.
The tablespace should be reorganized.
B.
The tablespace size should be increased by
adding a new data file.
C.
The table should be reorganized.
D.
The storage parameter MAXEXTENTS must be
increased.
E.
After the cause of the error has been
removed, the R/3 update task must be reactivated.
36. Which of
the following checks are useful for database performance monitoring?
Note! More than one answer is correct.
Please click on the buttons next to the correct answers.
A.
Checking that the CBO statistics are
refreshed once a week according to the strategy recommended by SAP.
B.
Checking that the archive directory contains
enough free space.
C.
Checking the data buffer quality.
D.
Checking the shared cursor cache for
expensive SQL statements.
E.
Checking for tables with more than 100
extents.
37. ___________ is used as default user when
you can an SAP tool for Oracle administration.
Click on the
button next to the right answer.
A.
SYSTEM
B.
SYSDBA
C.
SYSOPER
D.
SAP<SCHEMA-ID>
E.
SIDADM
38. Name the standard Database users created in
Oracle.
Note! More
than one answer is correct. Please click on the buttons next to the correct
answers
A.
SIDADM
B.
ORASID
C.
SYS
D.
SAP<SCHEMA-ID>
E.
SYSTEM
39. The
recommended method of changing the password of SAP<SCHEMA-ID> is
Click on the button next to the right answer.
A.
SQL> ALTER USER
B.
SAP tool BRCONNECT
C.
SQL > ALTER USER
D.
SQLPLUS>CHANGE PASSWORD
E.
SAP tool BRUSER
40. The
Oracle tool to test the connection to the database with SID C11 ON HOST
twdf0505 is
Click on the button next to the right answer.
A.
TNSLISTENER
B.
lsnrctl start
C.
tnspingC11
D.
CONNECT
E.
BRCONNECT
41. Your daily backups are performed
with automatic tape selection, no volume for backup is specified. Which tapes
will be accepted for backup (assuming the tape lock period is expired in all
cases.)
Note! More than one answer is correct.
Please click on the buttons next to the correct answers
A.
any labeled tape
B.
the tape labeled with the volume name you got
from DB13, Goto à Tapes
needed.
C.
A tape labeled with volume name scratch
D.
Any unlabeled tape.
42. The BR*TOOLS profile init<DBSID>.sap
can be edited by;
Click
on the button next to the right answer.
A.
BRBACKUP
B.
BRARCHIVE
C.
BRTOOLS
D.
Operating
system editor.
E.
None
of the above.
43,
To perform a complete database reset, you need one of the following backups.
Note! More than one answer is correct.
Please click on the buttons next to the correct answers
A.
complete offline backup
B.
complete online backup
C.
consistent online backup
D.
backup of offline redo log files.
1 comment:
could u plz post answers for above questions
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