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全部博文（487）
发布时间：2018-07-17 11:58:57
14、Which command is used to display files that no longer conform to the backup retention policy?A) REPORT OBSOLETEB) SHOW DATAFILE BACKUP COPIESC) CROSSCHECK BACKUPD) LIST EXPIRED BACKUPAnswer:A......【阅读全文】
发布时间：2018-07-17 11:06:57
13、Which two are true about AWR snapshots?A) They are stored In the SYSAUX tablespace.B) They are not generated if STATISTICS_LEVEL Is set to TYPICAL.C) They can be modified by using DMLs.D) They can be retained forever.E) They are always created automatically.Answer:AD.........【阅读全文】
发布时间：2018-07-13 10:57:23
12、Which two types of Information can be found in the alert log?A) instance recovery detailsB) a record of all DDL statements performed by non-DBA usersC) a record of all actions performed by SYS and SYSTEMD) critical errors encountered by background processesE) values of all .........【阅读全文】
发布时间：2018-07-13 10:12:02
11、Which three are true about UNDO data?A) It is used to roll back failed transactions.B) It is used to rewind a database by using FLASHBACK DATABASE.C) It is used to recover dropped tables by using FLASHBACK TABLE … TO BEFORE DROP.D) It is used to enable ROLLBACK statements to .........【阅读全文】
发布时间：2018-07-12 10:13:47
10、Which two are true about consistent database backups?A) They can only be taken when a RECOVERY CATALOG is used.B) They can only be taken if the database Is in ARCHIVELOG mode.C) They can only be taken If shutdown NORMAL, TRANSACTIONAL, or IMMEDIATE shutdown has been performed and .........【阅读全文】
