You executed the following query： SELECT operation， undo_sql， table_name FROM flashback_transaction_query； Which statement is correct regarding the query output？（） ["It would return information regarding only the last committed transaction.","It would return only the active transactions in all the undo segments in the database.","It would return only the committed transactions in all the undo segments in the database.","It would return both active and committed transactions in all the undo segments in the database.","It would return information regarding the transactions that began and were committed in the last 30 minutes."]
影响细菌生长繁殖的主要因素有哪些？
计算机网络的基本功能是哪些（） ["数据快速传送和集中处理","资源共享","数据分布处理","提供多种应用程序，完成各种疑难算法"]
Which statement about Automatic Memory Management with Oracle 11g is true?（） [" You cannot specify MEMORY_TARGET if you explicitly specify SGA_TARGET or PGA_AGGREGATE_TARGET values that are greater than zero in your parameter file."," Oracle can reallocate memory between the SGA and PGA automatically as needed."," To use Automatic Memory Management, you must explicitly set both the MEMORY_TARGET and MEMORY_MAX_TARGET parameters in your parameter file."," You can set the MEMORY_TARGET parameter to a maximum value of the current SGA size plus the current PGA size."]
Upon starting your database, you receive the following error: You can choose from the following steps: 1.Restore the database datafiles. 2.Issue the alter database clear unarchived logfile group 1 command. 3.Issue the alter database open command. 4.Issue the alter database open resetlogs command. 5.Recover the database using point-in-time recovery. 6.Issue the Startup Mount command to mount the database. 7.Back up the database. Which is the correct order of these steps in this case?（） [" 1,6,5,4,7"," 6,5,4"," 6,2,3,7"," 1,6,3"," The database cannot be recovered"]
试举例分析小企业管理包含的内容。
