1Z0-117 Exam Questions
124 real 1Z0-117 exam questions with expert-verified answers and explanations. Page 2 of 3.
- Question #52Managing SQL Performance with SQL Plan Management
You need to migrate database from oracle Database 10g to 11g. You want the SQL workload to start the 10g plans in the 11g database instance and evolve better plans. Examine the fol...
SQL Tuning SetSQL plan baselinedatabase migrationSQL Performance Analyzer - Question #53Monitoring and Analyzing SQL Performance
A database instance is configured in the shared server mode and it supports multiple applications running on a middle tier. These applications connect to the database using differe...
DBMS_MONITORservice-level statisticsV$SERV_MOD_ACT_STATSmodule/action tracing - Question #54Gathering Optimizer Statistics
In which three situations must you collect optimizer statistics manually for database objects in addition to automatic statistics collection?
manual statistics collectionautomatic stats gatheringpartition statisticsbulk load stale stats - Question #55Understanding and Influencing the Optimizer
Examine the query and its execution plan: Which two statements are true regarding the execution plan?
nested loop outer joinexecution plan interpretationjoin methodsouter join semantics - Question #56Understanding and Influencing the Optimizer
An application frequently executed similar types of queries that vary only in the usage of literals in the WHERE clause. You plan to use bind variable in place of literal values. T...
bind variablesbind peekingCURSOR_SHARINGlibrary cache latches - Question #57Understanding and Influencing the Optimizer
Examine the execution plan: Which two are true regarding the execution plan?
hash partitioningpartition pruningexecution planpartitioned table join - Question #58Understanding and Influencing the Optimizer
Which two tasks are performed during the optimization stage of a SQL statement?
SQL optimization stagesintegrity constraintsoptimizer statisticsquery processing pipeline - Question #59Using Indexes and Materialized Views for Tuning
Examine the Exhibit1 to view the structure of an indexes for the EMPLOYEES table. Examine the query: SQL> SELECT * FROM employees WHERE employees_id IN (7876, 7900, 7902); EMPLOYEE...
INLIST ITERATORindex range scanprimary key indexIN-list execution - Question #60Gathering Optimizer Statistics
You are administering a database supporting a DDS workload in which some tables are updated frequently but not queried often. You have SQL plan baseline for these tables and you do...
STALE_PERCENTstatistics preferencesautomatic stats collectionDBMS_STATS - Question #61Monitoring and Analyzing SQL Performance
Your database has the OLTP_SRV service configured for an OLTP application running on a middle tier. This service is used to connect to the database by using connection pools. The a...
trace file consolidationtkproftrcess utilityDBMS_MONITOR service tracing - Question #62Implementing SQL Performance Advisors
Which statement is true about an automatic SQL task?
automatic SQL tuning taskSQL profilesAWR top SQLSQL Tuning Advisor - Question #63Understanding and Influencing the Optimizer
Examine the exhibit. Which two are true concerning the execution plan?
full partition-wise joincomposite partitioningparallel queryexecution plan partitioning - Question #64Understanding and Influencing the Optimizer
You are working on a database that supports an OLTP workload. You see a large number of hard parses occurring and several almost identical SQL statements in the library cache that...
hard parsingCURSOR_SHARINGbind variableslibrary cache - Question #65Gathering Optimizer Statistics
You are administering a database that supports an OLTP workload. Automatic optimizer statistics collection is scheduled in the night maintenance window. Some of the tables get upda...
stale statisticsdynamic samplinghistogramsSTALE_PERCENT - Question #66Monitoring and Analyzing SQL Performance
Examine the exhibit to view the query and its execution plan. Identify the two correct interpretations that can be made from the execution plan.
hash joindriving tableexecution planjoin methods - Question #67Implementing SQL Performance Advisors
You are administering a database that supports a DSS workload, where in an application a set of queries use the query rewrite on materialized views. You notice that these queries a...
query rewritematerialized viewsSQL Access AdvisorDBMS_MVIEW - Question #68Gathering Optimizer Statistics
You are administering a database that supports an OLTP workload in which one of the applications inserts rows in a table until 12 noon every, after which multiple years perform fre...
statistics lockingstale statisticsgather statisticsOLTP - Question #69Understanding and Influencing the Optimizer
Examine the query: The RESULT_CACHE_MODE parameter is set to MANUAL for the database. Which two statements are true about the usage of the result cache?
result cacheRESULT_CACHE_MODERESULT_CACHE hintquery result caching - Question #70Using SQL Tuning Tools
How can you analyze an existing trace file to list the almost resource-intensive statements, aggregation of statistics, and to either exclude recursive call details?
TKPROFtrace fileSQL_TRACEperformance analysis - Question #71Understanding and Influencing the Optimizer
Which statement is true about the usage of the STAR_TRANSFORMATION hint in a query?
STAR_TRANSFORMATION hintstar querybitmap indexesoptimizer transformation - Question #72Monitoring and Analyzing SQL Performance
Examine the Exhibit to view the structure of and indexes for the EMPLOYEES and DEPARTMENTS tables: EXAMINE the SQL statement and its execution plan: Which two statements are correc...
nested loop joinexecution planbitmap indexclustering factor - Question #73Gathering Optimizer Statistics
Which two statements are true about the use of the DYNAMIC_SAMPLING hint in a query?
DYNAMIC_SAMPLING hintcardinality estimatesextended statisticsselectivity - Question #74Monitoring and Analyzing SQL Performance
Your database supports a workload consisting of three categories of SQL statements: - Statements that should execute in less than one minute - Statement that may execute for up to...
PARALLEL_DEGREE_POLICYDatabase Resource Managerconsumer groupsparallel queuing - Question #75Monitoring and Analyzing SQL Performance
Examine the Exhibit. Given two sets of parallel execution processes, SS1 and SS2, which is true?
parallel executiondata distributionparallel query slavesrow distribution - Question #76Understanding and Influencing the Optimizer
See the code fragment: You receive the following error message: ORA-12827: insufficient parallel query slaves available. Which three parameter settings could you change to avoid th...
ORA-12827PARALLEL_MIN_PERCENTPARALLEL_MAX_SERVERSparallel slaves - Question #77Understanding and Influencing the Optimizer
Examine the parallelism parameters for your instance: Examine the Exhibit to view the query and its explain plan output. All sessions use default parallelism settings. What two ste...
parallel executionPARALLEL_MIN_TIME_THRESHOLDparallel hintPARALLEL_MAX_SERVERS - Question #78Understanding and Influencing the Optimizer
Examine the following command: Which query transformation technique is used by the optimizer in this case?
predicate pushingquery transformationview mergingfilter push-down - Question #79Implementing SQL Performance Advisors
You identified some DSS queries that perform expensive join and aggregation operations. The queries access historical data from noncurrent partition of the fact tables. What three...
query rewriteSQL Access AdvisorSQL Tuning AdvisorQUERY_REWRITE_ENABLED - Question #80Using Indexes and Materialized Views for Tuning
Identify two situations in which full table scans will be faster than index range scans.
full table scanindex range scanclustering factorparallel scan - Question #81Understanding and Influencing the Optimizer
You are administering a database, where an application frequently executes identical SQL statements with the same syntax. How will you optimize the query results without retrieving...
result cacheRESULT_CACHE hintRESULT_CACHE_MODEquery optimization - Question #82Using Indexes and Materialized Views for Tuning
Which three options are true about MVIEWs?
materialized viewsrefresh on demandrefresh on commitquery rewrite - Question #83Using Indexes and Materialized Views for Tuning
Partial details of an execution plan. Which statement correctly describes the BITMAP AND operation?
BITMAP ANDbitmap indexesstar schemafact table - Question #84Using Indexes and Materialized Views for Tuning
Which two statements are true about index full scans?
index full scanindex fast full scanmulti-block I/Oindex structure - Question #85Managing SQL Performance with SQL Plan Management
An application supplied by a new vendor is being deployed and the SQL statements have plan baselines provided by the supplier. The plans have been loaded from a SQL tuning set. You...
SQL plan baselineDBMS_SPMplan evolutionOPTIMIZER_USE_SQL_PLAN_BASELINES - Question #86Gathering Optimizer Statistics
You recently gathered statistics for a table by using the following commands: You noticed that the performance of queries has degraded after gathering statistics. You want to use t...
optimizer statisticsstatistics historystatistics restorationstatistics retention - Question #87Managing SQL Performance with SQL Plan Management
View the exhibit and examine the plans in the SQL baseline for a given statement. Which interpretation is correct?
SQL plan baselineplan evolutionaccepted planDBMS_SPM.EVOLVE_SQL_PLAN_BASELINE - Question #88Implementing SQL Performance Advisors
You want to run SQL Tuning Advisor statements that are not captured by ADDM, AWR, and are not in the library cache. What is the prerequisite?
SQL Tuning AdvisorSQL Tuning SetSTSlibrary cache - Question #89Implementing SQL Performance Advisors
While tuning a SQL statement, the SQL Tuning Advisor finds an existing SQL profile for a statement that has stale statistics. Automatic optimizer statistics is enabled for the data...
SQL Tuning AdvisorSQL profilestale statisticsautomatic statistics - Question #90
Refer to the Exhibit. Execution plan: What must be the correct order of steps that the optimizer executes based on the ID column the execution plan?
- Question #91Understanding and Influencing the Optimizer
Examine the Exhibit. Which two statements are true about the bloom filter in the execution plan?
bloom filterparallel executionparallel distributionexecution plan - Question #92
Examine the query and its execution plan: Which statement is true regarding the execution plan?
- Question #94
View the exhibit and examine the query and its execution plan from the PLAN_TABLE, Which statement is true about the execution?
- Question #95Understanding and Influencing the Optimizer
Which four statements are correct about communication between parallel execution process?
parallel executionmessage bufferslarge poolpartition-wise join - Question #96Understanding and Influencing the Optimizer
You have enabled DML by issuing: ALTER session ENABLE PARALLEL DML; The PARELLEL_DEGREE_POLICY initialization parameter is set to AUTO. Which two options true about DML statements...
parallel DMLPARALLEL_DEGREE_POLICYstatement queuingparallel server - Question #97Monitoring and Analyzing SQL Performance
Examine Exhibit1 to view the query and its AUTOTRACE output. Which two statements are true about tracing?
AUTOTRACEexecution planPLAN_TABLESQL tracing - Question #98Understanding and Influencing the Optimizer
Which two types of column filtering may benefit from partition pruning?
partition pruningrange partitioninghash partitioningequality operator - Question #99Understanding and Influencing the Optimizer
Which two statements about In-Memory Parallel Execution are true?
In-Memory Parallel ExecutionPARALLEL_DEGREE_POLICYRACbuffer cache - Question #100Understanding and Influencing the Optimizer
Which two are benefits of In-Memory Parallel Execution?
In-Memory Parallel Executionbuffer cachephysical I/Oparallel queries - Question #101Understanding and Influencing the Optimizer
You plan to bulk load data INSERT INTO . . . SELECT FROM statements. Which two situations benefit from parallel INSERT operations on tables that have no materialized views defined...
parallel DMLdirect path insertindex-organized tablepartitioned table - Question #102Understanding and Influencing the Optimizer
Which are the two prerequisites for enabling star transformation on queries?
star transformationbitmap indexSTAR_TRANSFORMATION_ENABLEDfact table