﻿In your database, the CURSOR_SHARING parameter is set to FORCE. A user issues the following SQL statement: Select * from SH.CUSTOMERS where REIGN=’NORTH’ Which two statements are correct?
Answer : A, B
- The literal value ‘NORTH’ is replaced by a system-generated bind variable.
- Bind peeking will not happen and subsequent executions of the statement with different literal values will use the same plan.
- Adaptive cursor sharing happens only if there is a histogram in the REIGN column of the CUSTOMERS table.
- Adaptive cursor sharing happens irrespective of whether there is a histogram in the REIGN column of the CUSTOMERS table.
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 following steps: 1. Capture the pre-Oracle Database 11g plans in a SQL Tuning Set (STS) 2. Export the STS from the 10g system. 3. Import the STS into Oracle Database 11g. 4. Set the OPTIMIZER_FEATURES_ENABLE parameter to 10.2.0. 5. Run SQL Performance Analyzer for the STS. 6. Set the OPTIMIZER_FEATURES_ENABLE parameter to 11.2.0. 7. Rerun the SQL Performance Analyzer for the STS. 8. Set OPTIMIZER_CAPTURE_SQL_PLAN_BASELINE to TRUE. 9. Use DBMS_SPM.EVOLVE_SQL_BASELINE function to evolve the plans. 10. Set the OPTIMIZER_USE_SQL_PLAN_BASELINE to TRUE. Identify the required steps in the correct order.
Answer : C
- 1, 2, 3, 4, 5, 6, 7,
- 4, 8, 10
- 1, 2, 3, 4, 8, 10
- 1, 2, 3, 6, 9, 5
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 application has three modules. You enabled tracing at the service by executing the following command: SQL exec DBMS_MONITOR.SERV_MOD_ACT_TRACE_ENABLE (‘OLTP_SRV’); What is the correct method of consolidating the trace files generated by the procedure?
Answer : C
- Use all trace files as input for the tkprof utility to consolidate the trace files for a module.
- Use one trace file at a time as input for the trcess utility and use tkprof utility to consolidate all the output files for a module.
- Use the trcess utility to consolidate all trace files into a single output file, which can then be processed by the tkprof utility.
- Use the tkprof utility to consolidate the trace files and create an output that can directly be used for diagnostic purposes.
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?
Answer : D
- By using the DBMS_TRACE package
- By using the EXPLAIN PLAN command
- By enabling the SQL_TRACE parameter for the session
- By using the TKPROF utility
- By using the TRCSESS utility
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 data blocks from the storage?
Answer : DDownload more 1z0-117 sample questions from above download links.
- By setting the CURSOR_SHARING parameter to FORCE.
- By using the bind variables and setting the CURSOR_SHARING parameter to EXACT.
- By using the CACHE hint to pin the queries in the library cache
- By ensuring that RESULT_CACHE_MODE parameter is set to MANUAL and using the RESULT_CACHE hint in the queries.
- By creating a SQL plan baseline for the identical statements.
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