CMS专题
单选题You upgraded from a previous Oracle database version to Oracle Database version to Oracle Database12c. Your database supports a mixed workload. During the day, lots of insert, update, and deleteoperations are performed. At night, Extract, Transform, Lo
题目
Examine the Active Session History (ASH) reports for the time period of the ETL or batch reporting runs.
Enable SQL tracing for the queries in the ETL and batch reporting queries and gather diagnostic data from the trace file.
Enable real-time SQL monitoring for ETL jobs and gather diagnostic data from the V$SQL_MONITOR view.
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.
相似问题和答案
第1题：
You installed Oracle Database 11g and are performing a manual upgrade of the Oracle9i database. As a part of the upgrade process, you execute the following script:SQL>@utlu111i.sqlWhich statement about the execution of this script is true?（）
A. It must be executed from the Oracle Database 11g environment.
B. It must be executed only after the SYSAUX tablespace has been created.
C. It must be executed from the environment of the database that is being upgraded.
D. It must be executed only after AUTOEXTEND is set to ON for all existing tablespaces.
E. It must be executed from both the Oracle Database 11g and Oracle Database 9i environments.
第2题：
A. Effectively implements role separation
B. Enables you to take advantage of Oracle Managed Files.
C. Automatically registers the database with Oracle Restart.
D. Helps you to easily upgrade the database from a prior release.
E. Enables the Installation of Grid Infrastructure files on block or raw devices.
第3题：
You are working on a CATDB database that contains an Oracle Database version 11.1 catalog schema owned by the user RCO11. The INST1 database contains an Oracle Database version 10.1 catalog schema owned by the user RCAT10.You want the RMAN to import metadata for database IDs 1423241 and 1423242, registered in RCAT10, into the recovery catalog owned by RCO11.You executed the following commands:Which two statements are true regarding the tasks accomplished with these commands?（）
A. They import all metadata from the RCAT10 catalog.
B. They unregister the database from the RCAT10 catalog.
C. They do not register the databases registered in the RCAT10 catalog.
D. They register all databases registered in the RCAT10 catalog.
第4题：
You dropped a schema of a user in an Oracle 10g by mistake. You decide to flash the database back to its previous state to restore the deleted schema. Which process writes the before images of the physical database blocks to the flashback database logs？（）
- A、 LGWR
- B、 DBWR
- C、 MMON
- D、 RVWR
正确答案:D
第5题：
You have recovered your Oracle Database 10g by using the control file backup because all copies of the current control file have been lost due to a media failure. You open your database by using the following statement： SQL>ALTER DATABASE OPEN RESETLOGS； Which of the following options is true about using the RESETLOGS option？（）
- A、 The log sequence is reset to 0.
- B、 All the online redo logs are deleted.
- C、 All the archived redo logs from a previous incarnation become useless.
- D、 The full database backup taken from a previous incarnation can be used in future.
- E、 Only the control file and online redo log files are updated with a new RESETLOGS SCN and time stamp.
正确答案:D
第6题：
You upgraded from a previous Oracle database version to Oracle Database version to Oracle 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.
第7题：
You are working on a CATDB database that contains an Oracle Database version 11.1 catalog schema owned by the user RCO11. The INST1 database contains an Oracle Database version 10.1 catalog schema owned by the user RCAT10. You want the RMAN to import metadata for database IDs 1423241 and 1423242， registered in RCAT10， into the recovery catalog owned by RCO11. You also want to deregister them from the catalog after import. You executed the following commands to achieve this： RMAN> CONNECT CATALOG rco11/password@catdb RMAN> IMPORT CATALOG rcat10/oracle@inst1 DBID=1423241，1423242； What happens if the RCO11 catalog has scripts with the same name as that of the scripts in RCAT10 catalog？（）
- A、 The scripts in the RCO11 catalog are overwritten.
- B、 RMAN renames the local stored scripts in the RCO11 catalog.
- C、 The RMAN session in which the command is executed aborts.
- D、 RMAN renames the global scripts that are imported from the RCAT10 catalog.
正确答案:D
第8题：
You perform the following activities during the database upgrade from Oracle Database 10g to Oracle Database 11g:1. Capture plans for a SQL workload into a SQL Tuning Set (STS) before upgrade.2. Load these plans from the STS into the SQL plan baseline immediately after the upgrade.What is the reason for performing these activities? （）
A. to minimize plan regression due to the use of a new optimizer version
B. to completely avoid the use of new plans generated by a new optimizer version
C. to prevent plan capturing when the SQL statement is executed after the database upgrade
D. to keep the plan in the plan history so that it can be used when the older version of the optimizer is used
第9题：
You are managing an Oracle Database 11g database. You configured the database to run in ARCHIVELOGmode. Which two statements are true in this scenario（）
- A、You must shut down the database instance to perform the backups.
- B、You must configure the Flash Recovery Area （FRA） for the database.
- C、You can perform complete database backups without closing the database.
- D、All the previous closed database backups including control files become invalid after you configure thedatabase to ARCHIVELOG mode.
正确答案:C,D
第10题：
In your production database you want to use an Automatic Storage Management （ASM） instance to manage the database files. Which option would you use to migrate the database files from a non-ASM instance to an ASM instance？（）
- A、Oracle Migration Assistant
- B、Recovery Manager （RMAN）
- C、Oracle Data Pump Export and Import
- D、conventional Oracle Export and Import
- E、operating system utilities to copy the files to the ASM instance
正确答案:B