You delete a trace options file and later notice that no new entries are being written to this file. What would allow the entries to be written to the file again？（）

se. You wantto collect basic statistics about query, such as the level of parallelism, total database time, and the number of I/O requests.For the database instance STATISTICS_LEVEL, the initialization parameter is set to TYPICAL and theCONTROL_MANAGEMENT_PACK_ACCESS parameter is set to DIAGNOSTIC+TUNING.What should you do to accomplish this task？（）

A. Execute the query and view Active Session History (ASH) for information about the query.

B. Enable SQL trace for the query.

C. Create a database operation, execute the query, and use the DBMS_SQL_MONITOR. REPORT_SQL_MONITOR function to view the report.

D. Use the DBMS_APPLICATION_INFO.SET_SESSION_LONGOPS procedure to monitor query execution and view the information from the V$SESSION_LONGOPS view.

A.PUT

B.DELETE

C.POLL

D.TRACE

A.POST

B.HEAD

C.GET

D.OPTIONS

E.PUT

A.TRACE

B.DELETE

C.PUT

D.GET

A、PUT

B、DELETE

C、TRACE

D、MOVE

A.put和delete

B.get和post

C.get和put

D.post和trace

Database12c. Your database supports a mixed workload. During the day, lots of insert, update, and deleteoperations are performed. At night, Extract, Transform, Load (ETL) and batch reporting jobs are run.The ETL jobs perform certain database operations using two or more concurrent sessions.After the upgrade, you notice that the performance of ETL jobs has degraded. To ascertain the cause ofperformance degradation, you want to collect basic statistics such as the level of parallelism, totaldatabase time, and the number of I/O requests for the ETL jobs.How do you accomplish this？（）

A. Examine the Active Session History (ASH) reports for the time period of the ETL or batch reporting runs.

B. Enable SQL tracing for the queries in the ETL and batch reporting queries and gather diagnostic data from the trace file.

C. Enable real-time SQL monitoring for ETL jobs and gather diagnostic data from the V$SQL_MONITOR view.

D. Enable real-time database operation monitoring using the DBMS_SQL_MONITOR.BEGIN_OPERATION function, and then use the DBMS_SQL_MONITOR.REPORT_SQL_MONITOR function to view the required information.

A.GET和POST

B.GET和PUT

C.PUT和DELETE

D.HEAD和TRACE

A.GET和POST

B.GET和PUT

C.PUT和DELETE

D.HEAD和TRACE

A. Add a TraceContextEventHandler to the Trace.TraceFinished event to add the trace records into the database.

B. Add a system.diagnostics section to the Web.config file. Then add a listener to the new section.

C. Use the System.Diagnostics.Trace object to connect to a database. Then insert the trace records.

D. In the Page_Load for the page, place the Trace.Write call into a SQL INSERT statement.