描述什么是 redo logs
Which of the following files cannot be backed up by RMAN? ()(Choose all that apply.)A. Database datafilesB. Control filesC. Online redo logsD. Database pfilesE. Archived redo logs
点击查看答案
You are using Oracle Database 10g. You performed an incomplete recovery of your database and opened the database with the RESETLOGS option. What is the effect of opening the database with the RESETLOGS option？（）A、This operation resets the SCN for the database.B、This operation creates a new incarnation of the database.C、This operation moves all the redo log files to a different location.D、This operation deletes the old redo log files and creates new redo log files.E、This operation updates all current datafiles and online redo logs and all subsequent archived redo logs with a new RESETLOGS SCN and time stamp.
When you are allowing RMAN to backup your archived redo log files，how does RMAN know which archived redo logs to back up from your archive log destination？（）A、RMAN keeps a list of archive logs in a text file.B、The DBA must manually tell RMAN which archive logs to backup.C、RMAN has access to target control file and/or catalog information.D、RMAN looks at the ARCHIVE_LOG_DEST parameter of your target database and backs up all archive logs found.
Which files will you need to perform a full recovery of a database backed up in NOARCHIVELOG mode？（） A、 Database datafilesB、 Control filesC、 Archived redo logsD、 Online redo logsE、 Flashback logs
Archived redo logs can be copied to more than one destination by Oracle.（）A、 TrueB、 False
You are adding redo logs to the Oracle database. Creating a new redo log adds information to which of the following Oracle resources? （）A、Shared pool B、Control file C、SGA D、PGA
Because of a power outage， instance failure has occurred. From what point in the redo log does recovery begin and where does it end？（）A、current redo log and inactive redo logB、checkpoint position to end of redo logC、beginning of redo log to end of redo logD、all redo logs before the point of last commitE、beginning of redo log to checkpoint position
