[单选] The application workload on your database is same between 10 a.m. and 11 a.m. on weekdays. Suddenly you observe poor performance between 10 a.m. and 11 a.m. in the middle of the week. How would you identify the changes in configuration settings， workload profile，and statistics to diagnose the possible causes of the performance degradation？（）

Which three are true? （） A MERGE statement is used to merge the data of one table with data from another.。 A MERGE statement replaces the data of one table with that of another.。 A MERGE statement can be used to insert new rows into a table.。 A MERGE statement can be used to update existing rows in a table.。 锅炉系统FSSS是指（）。 You need to select appropriate processing methods for the EmployeeAssignment measure group and the Employee dimension. Which method should you choose?（） Run a Process Update against the Employee dimension. Run a Process Full against the EmployeeAssignment measure group.。 Run a Process Full against the EmployeeAssignment measure group. Run a Process Update against the Employee dimension.。 Run a Process Full against the Employee dimension. Run a Process Incremental against the EmployeeAssignment measure group.。 Run a Process Incremental against the EmployeeAssignment measure group. Run a Process Full against the Employee dimension.。 You configured the Flash Recovery Area for your database. The database instance has been started inARCHIVELOG mode and the LOG_ARCHIVE_DEST_1 parameter is not set. What will be the implications onthe archiving and the location of archive redo log files（） Archiving will be disabled because the destination for the redo log files is missing.。 The database instance will shut down and the error details will be logged in the alert log file.。 Archiving will be enabled and the destination for the archived redo log file will be set to the Flash RecoveryArea implicitly.。 Archiving will be enabled and the location for the archive redo log file will be created in the default location$ORACLE_HOME/log.。 因子V，Ⅷ主要含于下列哪种血液成分中（） 硫酸钡吸附血浆。 硫酸钡吸附血清。 正常人贮存血浆。 正常人贮存血清。 The application workload on your database is same between 10 a.m. and 11 a.m. on weekdays. Suddenly you observe poor performance between 10 a.m. and 11 a.m. in the middle of the week. How would you identify the changes in configuration settings， workload profile，and statistics to diagnose the possible causes of the performance degradation？（）