1Z0-117 Exam Questions
124 real 1Z0-117 exam questions with expert-verified answers and explanations. Page 3 of 3.
- Question #103Understanding and Influencing the Optimizer
An application accessing your database got the following error in response to SQL query: ORA-12827: insufficient parallel query slaves available View the parallel parameters for yo...
ORA-12827parallel parametersPARALLEL_MIN_PERCENTparallel server configuration - Question #104
Examine the Exhibit 1 to view the structure of and indexes for EMPLOYEES and DEPARTMENTS tables. Which three statements are true regarding the execution plan?
- Question #105Understanding and Influencing the Optimizer
In Your Database, The Cursor_Shareing Parameter is set to EXACT. In the Employees table, the data is significantly skewed in the DEPTNO column. The value 10 is found in 97% of rows...
adaptive cursor sharingbind peekinghistogramskewed data - Question #106Implementing SQL Performance Advisors
You created a SQL Tuning Set (STS) containing resource-intensive SQL statements. You plan to run the SQL Tuning Advisor. Which two types of recommendations can be provided by the S...
SQL Tuning AdvisorSQL Tuning Setstatistics gatheringSQL restructuring - Question #107
When would bind peeking be done for queries that vary only in values used in the WHERE clause?
- Question #108Implementing SQL Performance Advisors
Which type of SQL statement would be selected for tuning by the automatic SQL framework?
automatic SQL tuningAWR Top SQLSQL profileparallel queries - Question #109Implementing SQL Performance Advisors
You are administering a database supporting an OLTP workload. A new module was added to one of the applications recently in which you notice that the SQL statements are highly reso...
SQL Access AdvisorSQL Tuning Setcomposite indexworkload analysis - Question #110Monitoring and Analyzing SQL Performance
A new application module is deployed on middle tier and is connecting to your database. You want to monitor the performance of the SQL statements generated from the application. To...
DBMS_MONITORDBMS_APPLICATION_INFOtrcsesstkprof - Question #111Monitoring and Analyzing SQL Performance
One of your databases supports a mixed workload. When monitoring SQL performance, you detect many direct paths reads full table scans. What are the two possible causes?
full table scandirect path readsindex accessfilter selectivity - Question #112Understanding and Influencing the Optimizer
Examine the Exhibit. Which two options are true about the execution plan and the set of statements?
partition-wise joinparallel querydynamic distributionexecution plan - Question #113Understanding and Influencing the Optimizer
What are three common reasons for SQL statements to perform poorly?
full table scanstale statisticsclustering factoroptimizer performance - Question #114Understanding and Influencing the Optimizer
Examine the utilization parameters for an instance: You notice that despite having an index on the column used in the where clause, queries use full table scans with highly selecti...
OPTIMIZER_INDEX_COST_ADJDB_FILE_MULTIBLOCK_READ_COUNTfull table scanindex range scan - Question #115
Tracing has been enabled for the HR user. You execute the following command to check the contents of the orcl_25052.trc trace file, which was generated during tracing: Which two st...
- Question #116Gathering Optimizer Statistics
You are administering a database that supports an OLTP application. To set statistics preferences, you issued the following command: SQL > DBMS_STATS.SET_GLOBAL_PREFS (`ESTIMATE_PE...
DBMS_STATSglobal preferencesESTIMATE_PERCENTautomatic statistics - Question #118Gathering Optimizer Statistics
View the Exhibit1 and examine the structure and indexes for the MYSALES table. The application uses the MYSALES table to insert sales record. But this table is also extensively use...
index statisticshistogramlow distinct valuesquery optimization - Question #119Using Indexes and Materialized Views for Tuning
You are administering database that supports an OLTP workloads. Most of the queries use an index range scan or index unique scan as access methods. Which three scenarios can preven...
index range scanIS NULL predicateclustering factorstale statistics - Question #120Gathering Optimizer Statistics
You are logged in as the HR user and you execute the following procedure: SQL > exec DBMS_STATS.SET_TABLE_PREFS (`HR', `EMPLOYEES', `PUBLISH', `FALSE'); SQL> exec DBMS_STATS.GATHER...
pending statisticsPUBLISH preferenceDBMS_STATStable preferences - Question #121Understanding and Influencing the Optimizer
You enable auto degree of parallelism (DOP) for your database instance. Examine the following query: Which two are true about the execution of statement?
auto DOPparallel executionstatement queuingserial execution threshold - Question #122Understanding and Influencing the Optimizer
Examine the exhibit. Which is true based on the information obtainable from the execution plan?
parallel executionexecution planfull table scanquery coordinator - Question #123Understanding and Influencing the Optimizer
Examine the exhibit to view the query and its execution plan? What two statements are true?
execution planHASH JOINHASH GROUP BYproducer-consumer - Question #124Monitoring and Analyzing SQL Performance
A database supports three applications: CRM, ERP, and ACC. These applications connect to the database by using three different services: CRM_SRV for the CRM application, ERP_SRV fo...
DBMS_MONITORservice-level tracingtrace filesmodule name - Question #125Monitoring and Analyzing SQL Performance
Examine the following anonymous PL/SQL code block of code: Which two are true concerning the use of this code?
DBMS_SCHEDULERparallel DMLchunk commitsystem privileges - Question #126Understanding and Influencing the Optimizer
Examine the parallelism parameter for your instance: parallel_servers_target Now examine the resource plan containing parallel statement directives: Consumer Group resource plan co...
parallel statement queuingresource managerconsumer groupsDOP limits - Question #130Managing SQL Performance with SQL Plan Management
You notice some performance degradation for a high-load SQL statement in your database. After investigations, you run the SQL Tuning Advisor, which recommends a SQL Profile. You ac...
SQL Tuning AdvisorSQL profileSQL plan baselineplan evolution