单项选择题
A. If the REMOTE_LOGIN_PASSWORDFILE parameter is set to SHARED in the initialization parameter file， then a maximum of three users can be granted the SYSDBA or SYSOPER privileges.
B. If the REMOTE_LOGIN_PASSWORDFILE parameter is set to EXCLUSIVE in the initialization parameter file， then a maximum of three users can be granted the SYSDBA or SYSOPER privileges.
C. If the REMOTE_LOGIN_PASSWORDFILE parameter is set to SHARED in the initialization parameter file， then the SYSDBA and SYSOPER privileges can be granted to other users as long as space in the password file is
D. If the REMOTE_LOGIN_PASSWORDFILE parameter is set to EXCLUSIVE in the initialization parameter file， then the SYSDBAand SYSOPER privileges can be granted to other users as long as space in the password file is available.
单项选择题 AdamisworkingasaDatabaseAdministrator（DBA）forTeleSoftCorporation.HisdatabaseisrunningintheARCHIVELOGmode.Duringdatabasestartup，hediscoversthatoneofthediskscrashed，resultinginthepermanentlossofaread-writeUSERStablespace.TheUSERS01.dbfdatafilebelongstotheUSERStablespaceandis500MBinsize.HeneedstorecovertheUSERStablespacefromthebackup.Whilereviewingthebackupdetails，hediscoversthatthemostrecentavailablebackupisfivedaysold.ThisbackupwastakenwhentheUSERStablespacewasread-only.Aftercorrectingthehardwareproblemthatcausedthefailure，whatshouldAdamdotorecovertheUSERStablespace？（）
单项选择题 Your database is in manual archive mode. Your online redo log groups are configured as follows： You discover that DISK 3 has encountered a media failure that has resulted in a loss of all the multiplexed copies of online redo log files. You decide to delete the REDO01C.LOG， REDO02C.LOG， and REDO3C.LOG files to prevent the LGWR background process from attempting to access these files. When you query the V$LOG dynamic view， you receive the following output： Which sequence of statements should you use to drop the missing online redo log files from the database？（） 1. ALTER DATABASE DROP LOGFILE MEMBER ’E：\REDO01C.LOG’； 2. ALTER SYSTEM SWITCH LOGFILE； 3. ALTER DATABASE DROP LOGFILE MEMBER ’E：\REDO03C.LOG’； 4. ALTER SYSTEM ARCHIVE LOG GROUP 3； 5. ALTER DATABASE DROP LOGFILE MEMBER ’E：\REDO02C.LOG’； 6. ALTER SYSTEM ARCHIVE LOG GROUP 1；
单项选择题 You are operating your database in the manual archiving mode. Currently， your database is configured with the following online redo log groups and members： You tried to drop Group 1 from the database but received the following errors： ORA-01623： log 1 is current log for thread 1 cannot drop ORA-00312： online log 1 thread 1： ’D：\ORACLE\ORADATA\TESTDB\REDO01a.LOG’ What might be the reason for these errors？（）