TADM51+SAMPLE questions

7/23/2019 TADM51+SAMPLE questions

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TADM51

1 - Is data written to the Oracle transaction logs (redo logs) before or after the information is written inthe database files?Click on the button next to the right answer.

A. BeforeB. fter C. !imultaneousl"#. $he %riorit" and se&uence of database writes and transaction log writes is controlled b"

the %arameter 'dblgafter' in the OC*+ initiali,ation file.+. andoml" sometimes before sometimes after.

- /hat is the %rimar" function of the 0OC*+ O2+3sa%arch director"?Click on the button next to the right answer.

. $he sa%arch director" is a work area for the 34 database utilities.B. $he sa%arch director" is a work area for the 34 Instance tasks.C. $he sa%arch director" is used as the holding area for online database backu%s instead of

writing them to ta%e.

D. The saparch directory holds the archived database log files.+. $he sa%arch director" contains the current database transaction log files.

4 - /hich customer s%ecific s%ecific files does sa%dba sa5e during an offline backu% to insure that theOracle database could be restored to a consistent state in case of %roblems?Click on the button next to the right answer.

. $he Oracle executables files.B. $he Oracle database transaction log files and archi5ed log files.C. The tablespace data files, database transaction log files, and the database control file.#. $he database archi5ed log files and 34 !"slog file.+. $he database transaction log files and the 34 trans%ort structures.

6 - /hich customer s%ecific files must be sa5ed during an online database backu% to be able torestore the Oracle database to a consistent state ?Click on the button next to the right answer.

. $he Oracle executables database %arameter file and the tables%ace data files.B. $he Oracle online redo log files and the database control file.C. $he archi5ed 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.+. $he tables%ace data files database control file and the database %arameter file.

7 - /hat is the %rimar" function of the 0OC*+O2+3sa%backu% director"?Click on the button next to the right answer.

A. The sapbackup directory is used for database backups which are written to disk.B. $he sa%backu% director" is a work area for the 34 Instance tasks.C. $he sa%backu% director" is the tem%orar" holding area for the database transaction logs (redo

logs) before the" are automaticall" written to ta%e.#. $he sa%backu% director" holds the archi5ed database log files.+. $he sa%backu% director" is used b" the 34 database utilities during database

reorgani,ations.



8 - /hat is the name of the brbacku% and brarchi5e %arameter file for an Oracle database used b" an34 Central Instance with !9 !"stem I# C11?Click on the button next to the right answer.

. initC11.iniB. initC11.ora. init11.sap#. sa%dba.ini+. initC11.dba

: - /hen using a ta%e de5ice that su%%orts hardware com%ression which of the following statements istrue ?;ote< $here is more than one right answer= Click on the buttons next to the right answers.

. $he ta%eaddress and ta%eaddress rew init>!I#.sa% %arameters are automaticall" calculatedbased u%on the 5alue of the 'com%ression' %arameter.

B. #ri5ers for hardware com%ression must be s%ecified for the ta%eaddress and ta%eaddress rew%arameters in the init>!I#.sa% file.

. The co!pression ratio is calculated using "brbackup #k only" i!!ediately afterinstallation and should be repeated at least once a !onth to update co!pression ratios.

#. $he com%ression ratio should be calculated using 'brbacku% -k onl"' immediatel" after installationand ne5er needs to be re%eated.

$. The "co!pression" para!eter should be set to "hardware" in the init%&'D(.sap file.

@ - !a%dba and the Com%uter Center 2anagement !"stem (CC2!) use o%erating s"stem le5el%rograms for certain database administration tasks. /hich %rogram would be called b" CC2! for backingu% the data files for the 9!9B$B# and 9!9B$BI tables%aces?Click on the button next to the right answer.

. Brarchi5eB. Brconnect

C. sa%dba AbD. brbackup+. backoffl

- /hat are the 4 different Oracle database startu% modes?Click on the button next to the right answer.

. /arm cold maintenanceB. Mount, no!ount, openC. Online offline utilit"#. *e5el 1 le5el le5el 4+. ;ormal restrict utilit"

1 - /hat are the 4 different Oracle database shutdown modes?Click on the button next to the right answer.

. /arm cold maintenanceB. *e5el 1 le5el le5el 4. )or!al, i!!ediate, abort#. egular acti5e %assi5e+. !tandard now kill



11 - /hat is the %rimar" %ur%ose of the 0OC*+O2+3sa%reorg director"(/indows ;$< 0OC*+O2+Dsa%reorg)?Click on the button next to the right answer.

A. The sapreorg directory is a work area for the *+ database utilities.B. $he sa%reorg director" is a work area for the 34 #ialog Instance $asks.C. $he sa%reorg director" is used as the holding area for online database backu%s instead of writing

them to ta%e.#. $he sa%reorg director" holds the database transaction log files.+. $he sa%reorg director" contains the archi5ed database log files.

1 - Based u%on the information in the initial sa%dba %rogram menu what is the name of the%arameter file used b" Oracle when the database is started?$he name of the Oracle %arameter file is<spfilesid.ora, initsid.ora $"%e the correct file name in the field %ro5ided.

14 - /hat is the %ur%ose of the Oracle 'O9!0connect' function?

Click on the button next to the right answer.

A. -&/connect authori0ation allows an operating syste! user to connect to the databasewithout being pro!pted for a password.

B. O9!0connect is an Oracle command enabling whoe5er executes it to administer the databasewithout using s&ldba.

C. O9!0connect is used in Oracle 9arallel !er5er installations to enable remote databaseconnections o5er a *;.

#. O9!0connect authori,ation is re&uired of all database users and is re&uired for connection tothe database.

+. O9!0connect enables the 34 !"stem sa%oscol %rocess to communicate and exchange datawith the database.

16 - /hat is the name of the alert log file for an Oracle database using a s"stem identifier (!I#) ofC11?Click on the button next to the right answer.

. oralogC11.logB. oralogC11.trc. alert11.log#. alertC11.trc+. orasr5.log

17 - /hat ha%%ens if a table wants to allocate another extent but there is not enough contiguous frees%ace in the tables%ace?Click on the button next to the right answer.

. $he extent is allocated in another tables%ace.B. The -racle error !essage -*A#125 is sent to the &yslog file and to the ABA+3 short

du!p.C. $he extent is distributed across the free s%ace that is a5ailable.#. Oracle d"namicall" reorgani,es the tables%ace to make all a5ailable s%ace contiguous.+. $he database switches into maintenance mode and sends a s"stem message to the database

administrator.



18 - /hat action needs to be taken when Oracle returns an O-1874 error failure to allocate anextent for a table in a s%ecific tables%ace?Click on the button next to the right answer.

. $he tables%ace should be mo5ed to a faster disk so that Oracle can find the extents &uicker.B. The tablespace si0e should be increased by adding 1 or !ore datafiles.C. $his is an Oracle internal error message which should be registered with Oracle immediatel".#. $he database must be shutdown immediatel" to a5oid damage.+. $he affected table should be dro%%ed to a5oid similar %roblems in the future.

1: - Ender which circumstances does a table3index ha5e to be reorgani,ed?Click on the button next to the right answer.

. If the extents belonging to the table3index are distributed across se5eral data files.B. If a log switch occurs before a database commit is com%leted.C. If the tables%ace o5erflows during a redo log file switch.#. If an archi5er stuck situation occurs during a write to the table3index.

$. 'f the table+inde4 reaches the upper li!it for the MA$T$)T& para!eter value whenatte!pting to allocate another e4tent.

1@ - /hich Oracle com%onent d"namicall" maintains information about the status of the databaseredo logs database mode names and %aths of database files and is essential during a databasereco5er"?Click on the button next to the right answer.

. $he Oracle %arameter file init>!I#.ora.B. +ach tables%ace data file contains this data for the whole database.. The -racle control file, cntrl%&'D(.dbf.#. $he !F definition file sgadef>!I#.def.+. $he sa%dba %arameter file init>!I#.dba.

1 - n Instance error occurs when 1 or more Oracle background %rocesses become corru%ted. /hatactions should the database administrator take to correct the %roblem?Click on the button next to the right answer.

. $his is a serious error. Call the Oracle hotline.B. !hutdown the o%erating s"stem and reinstall the Oracle software.. &hutdown abort and startup open. The &M-) process will use the current redo log files

and checkpoint infor!ation fro! the control files to e4ecute an auto!atic instancerecovery upon database startup.

#. !hutdown the o%erating s"stem and turn all hardware off. fter the hardware cools off starte5er"thing u% again and execute Orainst using the re%air o%tion.

+. estore all missing files a%%l" the offline redo logs u%date the control files and execute the

startu% o%en command.

- /hich files must be restored from ta%e to allow a full database restore and reco5er" ?Click on the button next to the right answer.

. #atabase control file tables%ace 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. 0OC*+O2+ Oracle %arameter file tables%ace data files.#. #atabase control file tables%ace data files 34 !"slog 34 $rans%ort director".



+. Oracle %arameter file tables%ace data files and the Oracle control file.

1 - $he 34 !"stem Oracle database has 6 online redo logs also known as database transactionlogs. +ach online redo log has a mirrored co%". /hat is the effect of a log file switch?Click on the button next to the right answer.

. $he current online redo log gets co%ied to its mirrored co%" u%on com%letion the next onlineredo log becomes o%en for writing.

B. $he database alternates between writing to the online and offline redo log files.C. $he database switches between writing to the original redo log files and the mirrored redo log

files.#. $he current 34 !"slog file gets co%ied to the sa%arch director" and a new !"slog file is

created.$. The current online redo log gets closed and the ne4t online redo log gets opened for

writing. The A*6 process gets triggered to begin backing up the recently closed redolog.

- /hich statement is true of online Oracle database backu%s ?Click on the button next to the right answer.

. Esers ma" onl" read data and ma" not enter data until after the backu% is done.B. #atabase transaction logs (online redo logs) are not written during online backu%s.C. $he tables%ace data files and control file com%rise the com%lete online backu% and are all that

is necessar" for restoring the database to a consistent status.#. The database !ust be running in archivelog !ode.+. Online database backu%s are not su%%orted b" Oracle.

4 - Fi5en Oracle database with s"stem I# C11. If tables%ace 9!9B$B# has been extended 2B b" adding another datafile which of the following statements is true?Click on the button next to the right answer.

. In the e5ent of a full database restore the new tables%ace data file will be automaticall"created based u%on information in the initC11.ora file.

B. ll data files for 9!9B$B# should be backed u% along with the database control file tomaintain database reco5erabilit".

C. $he database should be shutdown and started u% again to register the existence of the newfile in the Oracle internal s"stem tables.

D. The data files for &ABTABD, the control file, and the redo logs !ust be backed up to!aintain database recoverability.

+. n 4I;!$ database co%" should be run to create a clean co%" of the com%lete database.

6 - /hat is the highest %riorit" when %lanning the distribution of the database transaction logsmirrored transaction logs archi5ed transaction logs and tables%ace data files o5er multi%le logicalde5ice grou%s?Click on the button next to the right answer.

. Better %erformance through more hardware.B. 2ore flexibilit" in case of hardware failure.C. +asier database backu%s and &uicker restores.#. 6igher data security and easier ad!inistration.+. $o make the s"stem %h"sicall" more modular for trans%ort reasons.



7 - /hich of the following oracle %arameters should ne5er be modified in the init>!I#.ora file?;ote< $here is more than one right answer= Click on the buttons next to the right answers.

. dbblockbuffers

B. dbblocksi0e. dbna!e#. controlfiles+. shared%oolsi,e

8 - /hich of the following configurations would ha5e the slightest im%act u%on data securit" and3or%erformance?

Click on the button next to the right answer.

. O%erating s"stem swa% and Oracle tables%ace data files installed on the same %h"sicaldisk(s).

B. -perating syste! swap and &A kernel 7e4ecutable files8 installed on the sa!ephysical disk7s8.

C. O%erating s"stem swa% and Oracle database transaction logs (redo logs) installed on thesame disk(s).#. O%erating s"stem swa% and the 3usr3sa% director" on the same %h"sical disk(s).+. Oracle database archi5ed log files (offline redo logs) accessed o5er a shared (or ;G!)

director" connection.

: - $he %h"sical se%aration of database logs from their mirror co%ies means?Click on the button next to the right answer.

. Esing %h"sicall" se%arate %artitions of a %h"sical disk.B. 9sing physically separate disks.C. Esing %h"sicall" se%arate disks in the same logical de5ice grou%.#. Esing generic database utilities to s%lit the flow of data between randoml" chosen o%erating

s"stem directories.+. Ese of database s%ecific utilities to fork log backu%s to %h"sicall" se%arate backu% media.

@ - /hich of the following Oracle %arameters should be modified in the init>!I#.ora file to enlargethe shared memor" usage for the Oracle database instance?;ote< $here is more than one right answer= Click on the buttons next to the right answers.

. logarchi5edestB. dbblocksi,eC. rollbacksegmentsD. sharedpoolsi0e+. dbblockbuffers

. brbacku% tool can create a database backu% when the database is u% and running or when it has

been shutdown. #uring an online database backu% which of the following is $E+? Click on thebutton next to the right answer.

. Esers must sto% entering data but ma" continue working using read-onl" transactions.B. Esers must sto% working because their work would be unreco5erable in case of %roblems withthe backu%.C.9sers !ay continue working without interruption.#.9ower-users ma" continue working but data-entr" users must log off.

+.Esers must log off until the online backu% is started but then ma" continue working



4. /hich of the following statements are correct in regard to using a single run of BBCHE9to sa5e both the database files and the offline redo log files?;ote= 2ore than one answer is correct. 9lease click on the buttons next to the correct answers.

. B*A*6':$ is started i!!ediately after the database backup is co!plete; no furtherintervention by the database ad!inistrator is necessary.

B. $his techni&ue can onl" be used for offline database backu%s not online backu%s.. The database backup and the backup of the offline redo log files !ust fit on one tapebecause changing tapes is not supported.

#. ou can backu% the database using multi%le ta%e de5ices in %arallel.+. The tapes used !ust have been initiali0ed by B*BA<9.

41. /hat ha%%ens during the startu% of an Oracle database?;ote= 2ore than one answer is correct. 9lease click on the buttons next to the correct answers.A. The &=A is created in shared !e!ory according to the para!eter settings in the

configuration file init%&'D(.ora.B. $he Oracle background and shadow %rocesses are created.. 'n the !ount phase, all copies of the control file are opened.

#. 'f necessary, -racle auto!atically perfor!s an instance recovery.+. s the last ste% the online redo log files are cleared and the data files are o%ened.

4. /hat ha%%ens during the shutdown of an Oracle database?;ote= 2ore than one answer is correct. 9lease click on the buttons next to the correct answers.

. /hen "ou shutdown the database with the ;O2* o%tion the database s"stemdisconnects all users before shutting down the database.

B. >hen you shutdown the database with the )-*MA? or 'MM$D'AT$ option, thedatabase syste! writes a checkpoint before shutting down the database.

C. /hen "ou shutdown the database with the BO$ or I22+#I$+ o%tion o%en transactionsare rolled back before the database is shut down.

#. /hen "ou shut down the database with the BO$ o%tion the 34 s"stem is shut down too.$. &hutting down the database with the AB-*T option always re@uires an instance

recovery at the ne4t database startup.

44. /hich of the following statements ex%ress %art of the !9-recommended strateg" for creatingand u%dating the table statistics used b" the cost-based o%timi,er?

;ote= 2ore than one answer is correct. 9lease click on the buttons next to the correct answers. . ;o statistics are created for 34 %ool and cluster tables.B. &tatistics are created for all transparent tables that have no statistics.C. $he table #B!$$C can be used to trigger an exact com%utation of the statistics of s%ecific

tables.#. $he u%date for table statistics refreshes all trans%arent tables.+. $he table #B!$$C can be used to detect which table statistics need to be refreshed .

46. /hat ha%%ens if a table wants to allocate another extent but there is not enough contiguous frees%ace in the tables%ace? Click on the button next to the right answer.

. 9lease click on the button next to the correct answer.B. $he extent is allocated in another tables%ace.C. $he extent is distributed across the free s%ace that is a5ailable.D. The -racle error !essage -*A 125 is sent to the file &&?-= and to the ABA short

du!p.+. Oracle d"namicall" reorgani,es the tables%ace to make all a5ailable s%ace contiguous.G. $he database switches into maintenance mode and sends a s"stem message to the

database administrator.



47. /hen the 34 u%date task aborts with an Oracle error O1874 - failure to allocate an extent fora table in a s%ecific tables%ace - what action needs to be taken?

;ote= 2ore than one answer is correct. 9lease click on the buttons next to the correct answers. . $he tables%ace should be reorgani,ed.B. The tablespace si0e should be increased by adding a new data file.C. $he table should be reorgani,ed.#. $he storage %arameter 2J+J$+;$! must be increased.$. After the cause of the error has been re!oved, the *+ update task !ust be

reactivated.

48. /hich of the following checks are useful for database %erformance monitoring?;ote= 2ore than one answer is correct. 9lease click on the buttons next to the correct answers.

A. hecking that the B- statistics are refreshed once a week according to the strategyreco!!ended by &A.

B. Checking that the archi5e director" contains enough free s%ace.. hecking the data buffer @uality.#. hecking the shared cursor cache for e4pensive &? state!ents.

+. Checking for tables with more than 1 extents.

4:. is used as default user when "ou can an !9 tool for Oracle administration.Click on the button next to the right answer.

A. &&T$MB. !!#BC. !!O9+#. !9>!C+2-I#+. !I##2

4@. ;ame the standard #atabase users created in Oracle.;ote= 2ore than one answer is correct. 9lease click on the buttons next to the correct answers

. !I##2B. O!I#. &&#. !9>!C+2-I#$. &&T$M

4. $he recommended method of changing the %assword of !9>!C+2-I# isClick on the button next to the right answer.

. !K* *$+ E!+B. &A tool B*-))$TC. !K* *$+ E!+#. !K*9*E!C;F+ 9!!/O#+. !9 tool BE!+

6. $he Oracle tool to test the connection to the database with !I# C11 O; O!$ twdf77 is

Click on the button next to the right answer. . $;!*I!$+;+B. lsnrctl start. tnsping11



#. CO;;+C$+. BCO;;+C$

61. our dail" backu%s are %erformed with automatic ta%e selection no 5olume for backu% iss%ecified. /hich ta%es will be acce%ted for backu% (assuming the ta%e lock %eriod is ex%ired in allcases.);ote= 2ore than one answer is correct. 9lease click on the buttons next to the correct answers

A. an" labeled ta%eB. the tape labeled with the volu!e na!e you got fro! DB1, =oto Tapes

needed.. A tape labeled with volu!e na!e scratchD. n" unlabeled ta%e.

6. $he BL$OO*! %rofile init>#B!I#.sa% can be edited b"MClick on the button next to the right answer .

. BBCHE9B. BCIN+C. B$OO*!D. -perating syste! editor.+. ;one of the abo5e.

64 $o %erform a com%lete database reset "ou need one of the following backu%s.;ote= 2ore than one answer is correct. 9lease click on the buttons next to the correct answers

A. co!plete offline backupB. com%lete online backu%. consistent online backup#. backu% of offline redo log files.

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TADM51+SAMPLE questions