The database will hang.
The database will be crashed.
The database will be shut down.
The LGWR process writes redo log entries to the other redo log member of the Group2 group
第1题:
You are maintaining your OLTP database in Oracle10g. While observing the performance of the database, you find that the log switch occurs more than once for every 20 minutes, affecting the database performance. Which factor is responsible for frequent log switches?()
第2题:
You are maintaining your database in Oracle10g. You are not using the recovery catalog to maintain the backup information of your database. Which file can be used as a repository to store information regarding the RMAN backup?()
第3题:
Your database is in ARCHIVELOG mode. You have two online redo log groups, each of which contains oneredo member. When you attempt to start the database, you receive the following errors:ORA-00313: open failed for members of log group 1 of thread 1ORA-00312: online log 1 thread 1: ‘D:\REDO01.LOG‘You discover that the online redo log file of the current redo group is corrupted.Which statement should you use to resolve this issue?()
A. ALTER DATABASE DROP LOGFILE GROUP 1;
B. ALTER DATABASE CLEAR LOGFILE GROUP 1;
C. ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 1;
D. ALTER DATABASE DROP LOGFILE MEMBER ‘D:\REDO01.LOG
第4题:
You have lost all your online redo logs. As a result, your database has crashed. You have tried to restart the database and clear the online redo log files, but when you try to open the database you get the following error. SQL> startup ORACLE instance started. Total System Global Area 167395328 bytes Fixed Size 1298612 bytes Variable Size 142610252 bytes Database Buffers 20971520 bytes Redo Buffers 2514944 bytes Database mounted. ORA-00313: open failed for members of log group 2 of thread 1 ORA-00312: online log 2 thread 1: ,,/oracle01/oradata/orcl/redo02a.log ORA-27037: unable to obtain file status Linux Error: 2: No such file or directory Additional information: 3 ORA-00312: online log 2 thread 1: ,,/oracle01/oradata/orcl/redo02.log ORA-27037: unable to obtain file status Linux Error: 2: No such file or directory Additional information: 3 SQL> alter database clear logfile group 2; alter database clear logfile group 2 * ERROR at line 1: ORA-01624: log 2 needed for crash recovery of instance orcl (thread 1) ORA-00312: online log 2 thread 1: ,,/oracle01/oradata/orcl/redo02.log ORA-00312: online log 2 thread 1: ,,/oracle01/oradata/orcl/redo02a.log What steps must you take to resolve the error?() a. Issue the recover database redo logs command. b. Issue the Startup Mount command to mount the database. c. Restore the last full database backup. d. Perform a point-in-time recovery, applying all archived redo logs that are available. e. Restore all archived redo logs generated during and after the last full database backup. f. Open the database using the alter database open resetlogs command. g. Issue the alter database open command.
第5题:
You have the following online redo log configuration: Group Member 1 ’/disk1/oradata/redo01a.log’ 2 ’/disk2/oradata/redo02a.log’ 3 ’/disk3/oradata/redo03a.log’ You decide to multiplex the online redo log groups for recovery of redo log files in case of any disaster. Which two statements will you NOT issue to multiplex the online redo log files?()
第6题:
As soon as you discover that you have lost an online redo log, if the database is still functioning, what should be your first action?()
第7题:
Your database is in ARCHIVELOG mode. You have two online redo log groups,each of which contains one redo member. When you attempt to start the database, you receive the following errors:()
第8题:
You are working on the PROD database, which is in NOARCHIVELOG mode. You lost the active online redo log group due to a media failure. How should you recover your database?()
第9题:
You are working on a database, where you have three redo log groups. When the database is down for a backup, an operating system (OS) user deletes all the redo log files in a group. What will happen when you open your database?()
第10题:
In your database, online redo log files are multiplexed and one of the members in a group is lost due to media failure. How would you recover the lost redo log member?()