La Q&A lancée par Pass4Test est bien poupulaire. Pass4Test peut non seulement vous permettre à appendre les connaissances professionnelles, et aussi les expériences importantes résumées par les spécialistes dans l'Industrie IT. Pass4Test est un bon fournisseur qui peut répondre une grande demande des candidats. Avec l'aide de Pass4Test, vous aurez la confiance pour réussir le test. Vous n'aurez pas aucune raison à refuser le Pass4Test.
1Z0-054 est un test de Oracle Certification, donc réussir 1Z0-054 est le premier pas à mettre le pied sur la Certifiction Oracle. Ça peut expliquer certiainement pourquoi le test Oracle 1Z0-054 devient de plus en plus chaud, et il y a de plus en plus de gens qui veulent participer le test 1Z0-054. Au contraire, il n'y a que pas beaucoup de gens qui pourrait réussir ce test. Dans ce cas, si vous vous réfléchissez étudier avec une bonne Q&A?
Vous aurez une assurance 100% à réussir le test Oracle 1Z0-054 si vous choisissez le produit de Pass4Test. Si malheuresement, vous ne passerez pas le test, votre argent seront tout rendu.
Code d'Examen: 1Z0-528
Nom d'Examen: Oracle (Oracle Database 11g Security Essentials)
Questions et réponses: 77 Q&As
Code d'Examen: 1Z0-054
Nom d'Examen: Oracle (Oracle Database 11g: Performance Tuning)
Questions et réponses: 192 Q&As
Pass4Test est un fournisseur professionnel des documentations à propos du test Certification IT, avec lequel vous pouvez améliorer le future de votre carrière. Vous trouverez que nos Q&As seraient persuadantes d'après d'avoir essayer nos démos gratuits. Le démo de Oracle 1Z0-054 (même que les autres démos) est gratuit à télécharger. Vous n'aurez pas aucune hésitation après travailler avec notre démo.
Pass4Test est un site à offrir les Q&As de tout les tests Certification IT. Chez Pass4Test, vous pouvez trouvez de meilleurs matériaux. Nos guides d'étude vous permettent de réussir le test Certification Oracle 1Z0-528 sans aucune doute, sinon nous allons rendre votre argent d'acheter la Q&A et la mettre à jour tout de suite, en fait, c'est une situation très rare. Bien que il existe plusieurs façons à améliorer votre concurrence de carrière, Pass4Test est lequel plus efficace : Moins d'argent et moins de temps dépensés, plus sûr à passer le test Certification. De plus, un an de service après vendre est gratuit pour vous.
Le succès n'est pas loin de vous si vous choisissez Pass4Test. Vous allez obtenir le Certificat de Oracle 1Z0-054 très tôt. Pass4Test peut vous permettre à réussir 100% le test Oracle 1Z0-054, de plus, un an de service en ligne après vendre est aussi gratuit pour vous.
1Z0-054 Démo gratuit à télécharger: http://www.pass4test.fr/1Z0-054.html
NO.1 Examine the initialization parameter values for the instance given below:
NAME TYPE VALUE
------------------------------------ ----------- ------------------
optimizer_capture_sql_plan_baselines boolean FALSE
optimizer_dynamic_sampling integer 2
optimizer_features_enable string 11.1.0.6
optimizer_index_caching integer 0
optimizer_index_cost_adj integer 100
optimizer_mode string ALL_ROWS
db_file_multiblock_read_count integer 64
The index created on the column used in the WHERE clause of the query. You notice that the query is not
using the index. Instead of an index scan, a full table scan is used.
View the Exhibit and examine the autotrace output for a query.
What could be the reason for it? (Choose all that apply.)
A. The OPTIMIZER_INDEX_COST_ADJ initialization parameter has a low value.
B. The DB_FILE_MULTIBLOCK_READ_COUNT initialization parameter has a low value.
C. The statistics for the table and all the indexes associated with the table are not current.
D. The table has less than DB_FILE_MULTIBLOCK_READ_COUNT blocks under the high-water mark.
ANSWER: CD
certification Oracle certification 1Z0-054 certification 1Z0-054 1Z0-054 examen
NO.2 View Exhibit1 to examine the description of the CUSTOMERS table.
You observed that optimizer selectivity is not accurate when the CUST_STATE_PROVINCE and
COUNTRY_ID columns are used together in the WHERE clause of a query.
View Exhibit2 to examine the query execution plan and the commands executed to gather the statistics.
The optimizer predicts that 20 rows will be processed rather than the 3,341 rows, which is the actual
number of rows returned from the table.
What can you do to make the optimizer detect the actual number of rows?
A. Set the STATISTICS_LEVEL parameter to ALL.
B. Set the OPTIMIZER_USE_PENDING_STATISTICS parameter to FALSE.
C. Create extended statistics for the CUST_STATE_PROVINCE and COUNTRY_ID columns.
D. Increase the STALE_PERCENT value for the CUSTOMERS table by using the
DBMS_STATS.SET_TABLE_PREFS procedure.
ANSWER: C
Oracle 1Z0-054 examen 1Z0-054 1Z0-054 1Z0-054
NO.3 Identify two correct statements about the Active Session History (ASH) data. (Choose two.)
A.A part of SGA memory is used to store ASH data as rolling buffer.
B.The ASH data can be analyzed between any two small time intervals.
C.All ASH data in memory are flushed to disk by MMON in every 3 seconds.
D.All ASH data in memory are flushed to disk by MMNL process whenever the buffer is full.
ANSWER: AB
Oracle examen 1Z0-054 examen 1Z0-054 certification 1Z0-054
NO.4 The columns CUST_CITY, CUST_STATE_PROVINCE, and COUNTRY_ID are frequently used
together in the WHERE clause of the queries. The CUSTOMERS table is a big table with 20 GB of data.
You notice that the selectivity for these three columns varies from the selectivity that the optimizer
calculates.
What would you recommend to influence the selectivity calculated by the optimizer?
A. creating function-based indexes by concatenating all the columns
B. updating histogram statistics for these columns by using the DBMS_STATS.GATHER_TABLE_STATS
procedure
C. using the DBMS_STATS.CREATE_EXTENDED_STATS function to create a virtual column and create
index on the virtual column
D. using the DBMS_STATS.CREATE_EXTENDED_STATS function to create a virtual column and the
DBMS_STATS.GATHER_TABLE_STATS procedure to collect statistics on the virtual column
ANSWER: D
Oracle certification 1Z0-054 1Z0-054 examen 1Z0-054 examen 1Z0-054 examen
NO.5 You are working on a development database that was upgraded to Oracle Database 11g from Oracle
Database 9i. An ADDM finding in this database says that the shared pool is inadequately sized, as shown
in the Exhibit.
You diagnosed that this is due to different kinds of workloads and this occurs only during peak hours. You
tried to resize this by shrinking the database buffer cache but that caused inadequate buffer cache
problems. The following are the related parameter settings:
SQL> show parameter sga
NAME TYPE VALUE
------------------------------ --------------- -----------------
lock_sga boolean FALSE
pre_page_sga boolean FALSE
sga_max_size big integer 300M
sga_target big integer 0
SQL> show parameter target
NAME TYPE VALUE
------------------------------ --------------- -----------------
.....
fast_start_mttr_target integer 0
memory_max_target big integer 0
memory_target big integer 0
pga_aggregate_target big integer 100M
sga_target big integer 0
You want to balance the memory between the System Global Area (SGA) components within SGA
without affecting the size of the Program Global Area (PGA).
Which action would solve this problem?
A. Set the SGA_TARGET parameter to 300M.
B. Set the SGA_MAX_SIZE parameter to 400M.
C. Set the MEMORY_TARGET parameter to 100M.
D. Set the MEMORY_MAX_TARGET parameter to 300M.
ANSWER: A
Oracle 1Z0-054 examen certification 1Z0-054 certification 1Z0-054
NO.6 You observed that some of the queries are performing poorly on the SALES_RECORDS table in your
database.
On further investigation, you find that at the end of each day the contents of the SALES_RECORDS table
are transferred to the SALES table and deleted from the SALES_RECORDS table. The deleted
operations cause the table to be sparsely populated.
You decided to use the ALTER TABLE...SHRINK SPACE COMPACT command to shrink the table.
Why would you choose this method? (Choose all that apply.)
A. because it can be used during peak hours
B. because it avoids unnecessary cursor invalidation
C. because it adjusts the high-water mark (HWM) immediately
D. because you have long-running queries that might span the shrink operation
E. because it does not allow any data manipulation language (DML) operations, thereby making the
shrink
operation faster
ANSWER: ABD
certification Oracle certification 1Z0-054 certification 1Z0-054 1Z0-054 examen 1Z0-054
NO.7 You work as a DBA for a company and you have the responsibility of managing one of its online
transaction processing (OLTP) systems. The database encountered performance-related problems and
you generated an Automatic Workload Repository (AWR) report to investigate it further.
View the Exhibits and examine the AWR report.
What could be the problem in this database?
A.Java pool is not configured.
B.The CPU in the system is slow.
C.The shared pool size is inadequate.
D.The database buffer cache is inadequate.
E.The OPEN_CURSORS parameter is set to a small value.
ANSWER: C
certification Oracle certification 1Z0-054 1Z0-054 examen 1Z0-054 examen certification 1Z0-054
NO.8 After running SQL Performance Analyzer (SPA), you observe a few regressed SQL statements in the
SPA output. Identify the two actions that you would suggest for these regressed SQL statements.
(Choose two.)
A.Running SQL Access Advisor
B.Adding them to SQL Plan Baseline
C.Submitting them to SQL Tuning Advisor
D.Running Automatic Database Diagnostic Monitor (ADDM)
ANSWER: BC
Oracle examen 1Z0-054 examen certification 1Z0-054 1Z0-054 examen
没有评论:
发表评论