单选题One of the tablespaces is read-only in your database. The loss of all control files forced you to re-create the control file. Which operation do you need to perform after re-creating the control file and opening the database?()A drop and re-create the read-only tablespacesB rename the read-only data files to their correct file namesC change the tablespace status from read/write to read-onlyD re-create the read-only tablespace because it is automatically removed
单选题
One of the tablespaces is read-only in your database. The loss of all control files forced you to re-create the control file. Which operation do you need to perform after re-creating the control file and opening the database?()
A
drop and re-create the read-only tablespaces
B
rename the read-only data files to their correct file names
C
change the tablespace status from read/write to read-only
D
re-create the read-only tablespace because it is automatically removed
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多选题You lost a data file that belongs to an index tablespace in your database, which operates in ARCHIVELOG mode. Loss of the data file resulted in increased response time on your queries. Which two options would you use to solve this problem? ()ARestore the lost data file from the backup, and then flash back the database.BRestore the data file pertaining to index tablespace, and then recover the tablespace.CRestore all the data files, and then perform an incomplete recovery to get the tablespace back.DRestore all the data files, and then perform an incomplete recovery using the backup control file.EDrop and re-create the index tablespace, and then re-create all of the indexes in that tablespace.
单选题You work as a database administrator for Supportcenter.cn. You added atablespaceto your database. Because of the changes to the physical structure of your database, you performed a backup of the control file to trace. After this, you lost only the control files and the instance aborted due to a hardware failure. How would you proceed to recover the database?()AStart the instance and open the database, instance recovery automatically recoverscontrol filesBCreate a file based on the contents of the trace file and save it to the control file locations and start the databaseCRe-create the database (The recovery of the control file is not possible because you have lost all the control files.)DStart the instance, in the NOMOUNTstate,re-create the control file using the CREATE CONTROLFILE command stored in the trace file.EStart the instance and MOUNT the database, then re-create the control file using the CREATE CONTROLFILE command stored in the trace file.
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单选题You executed the STARTUP MOUNT command to start your database. For which database operation do you need to start the database in the MOUNT state?()Arenaming the control filesBdropping a user in your databaseCenabling or disabling redo log archivingDdropping a tablespace in your databaseEre-creating the control files, after you lost all the control files in your database
单选题The loss of the control file forced you to re-create the control file. After re-creating it and opening the database, you find that some of the data files are named as MISSINGnnnnn, where nnnnn is a five-digit number starting with 0. What could be the possible reason?()A These are the data files that are corrupted.B There is no SYSAUX tablespace in your databaseC There is a read-only tablespace in your database.D These are the data files that cannot be recovered.
单选题You have lost all your database control files. To recover them, you are going to use the results of the alter database backup controlfile to trace command. Your datafiles and your online redo logs are all intact. Which of the following is true regarding your recovery?()A You will need to open the database with the resetlogs command.B All you need to do is execute the trace file from SQL*Plus and it will perform the recovery for you.C You will use the resetlogs version of the create controlfile command.D You will use the noresetlogs version of the create controlfile command.E You will use the trace file to create a backup control file, and then you will recover the database with the recover database using backup controlfile command