单选题 You are peer reviewing a fellow DBAs backup plan for his NOARCHIVELOG mode database, as shown here: Put the tablespaces in backup mode. Back up the datafiles for all tablespaces. Take the tablespaces out of backup mode. Back up all archived redo logs. Your colleague asks for you to comment on his plan. Which response would be correct?()
The plan will work as is.
The plan needs to be modified to allow for an archive-log switch after step 3.
The plan needs to be modified so that a backup of the archived redo logs occurs before step 1.
The plan needs to be adjusted to shut down the database after step 1 and to restart the database after step 2.
The plan cannot work as presented.
多选题 Which options would you consider while configuring a flash recovery area fast recovery area in 11g Release 2 for your production database that is running in ARCHIVELOG mode?()
Setting the FAST_START_MTTR_TARGET to set the mean time to recover
Setting the RECOVERY_PARALLELISM parameter to twice the number of CPUs
Using the DB_RECOVERY_FILE_DEST parameter to set the location for flash recovery area
Using the DB_RECOVERY_FILE_DEST_SIZE parameter to define the disk space limit for the recovery files created in the flash recovery area
多选题 Which of the following restrictions are not true with respect to tablespace point-in-time recovery?()
The target database must be in NOARCHIVELOG mode.
No backup is required of the database before you perform a TSPITR.
You must have all archived redo logs generated since the last backup up to the point to which you want to restore the transport set.
If you rename a tablespace, you can not perform a TSPITR to any point in time before that rename operation occurred.
If you have tables in tablespace_1 that have associated constraints in tablespace_2,then you must transport both tablespaces.
多选题 You want to analyze a SQL Tuning Set (STS) using SQL Performance Analyzer in a test database. Which two statements are true regarding the activities performed during the test execution of SQLs in a SQL Tuning Set?()
Every SQL statement in the STS is considered only once for execution.
The SQL statements in the STS are executed concurrently to produce the execution plan and execution statistics.
The execution plan and execution statistics are computed for each SQL statement in the STS.
The effects of DDL and DML are considered to produce the execution plan and execution statistics.
单选题 Which of the following is a potential performance tuning recommendation from the SQL Access Advisor?()
Create new indexes.
Modify existing indexes.
Implement partitioning on a nonpartitioned table.
Create materialized views.
All of the above
单选题 You are managing an Oracle Database 11g database. You want to take a backup on tape drives of the USERS tablespace that has a single data file of 900 MB. You have tape drives of 300 MB each. To accomplish the backup, you issued the following RMAN command: RMAN> BACKUP SECTION SIZE 300M TABLESPACE users; Identify the appropriate configuration to accomplish faster and optimized backups using the above command.()
The SBT channel must be configured, with the MAXPIECESIZE set to 300 mb.
The SBT channel must be configured, with the parallelism setting for the SBT devices set to 3.
The COMPATIBLE initialization parameter for the database instance must be set to at least 10.0.
The SBT channel must be configured, with the default parallelism setting for the SBT devices set to 1
多选题 Which commands are used for RMAN database recovery?()
restore
repair
copy
recover
replace
单选题 You need to restore your database back to 9/30/2008 at 18:00. In what order would you run the following commands to compete this task?() a. restore controlfile until time `09/30/2008:18:00:00’ b. restore database until time `09/30/2008:18:00:00’ c. restore spfile until time `09/30/2008:18:00:00’ d. recover database until time `09/30/2008:18:00:00’ e. alter database open resetlogs f. alter database open
b, d, e
b, d, f
c, a, b, d, e
c, a, b, d, f
a, b, d, e
多选题 What is the purpose of the RMAN recovery catalog?()
Make backups faster
Store RMAN metadata
Store RMAN scripts
Provide the ability to do centralized backup reporting
Make recovery faster
多选题 Which two client requests are captured during database replay Capture?() (Choose two)
Flashback queries
Shared server requests
Login and logoff activities of sessions
Direct path load of data from external files by using utilities such as SQL *loader
Data definition language (DDL) and data manipulation language (DML) operations
在任何情况下,伸缩调节器处轨距的要求为()。
人类有两套影响学习的记忆系统:陈述性记忆和程序记忆。陈述性记忆是对事实或者词汇之类基本认识的记忆。而程序记忆,就是一个人“不劳而获”的记忆。程序记忆是人养成习惯和习得技巧的方式,比如骑自行车。在很多时候,这种学习是无意识的。人们用早期发育的程序记忆系统来学习复杂的东西,比如语法规则。帮助人们学习词汇的陈述性记忆系统,则需要更多时问完成发育。儿童拥有程序记忆系统,并且不受陈述性记忆系统的干扰。由此可以推出()。
宋末元初四大家
公平目标的实现可以通过()实现。
荟萃分析
人员安全疏散分析的性能判定标准为:可用疏散时间(A.SET)必须()必需疏散时间(RSET)。
预防HIV感染的主要措施应当为( )
简述我国混合型债券市场的发展状况。
造成水中某些污染物在生物体内含量大大高于水体中的浓度的生物放大作用是指()
输血的适应证中,不包括()