uses undo data for roll forward
uses Flashback Log for recovery
uses online redo logs to roll back
uses undo data to roll back the transaction
uses Recovery Manager (RMAN) to roll back
uses the System Monitor (SMON) background process to perform instance recovery
第1题:
You have 50 subscribers accessing a LAC to connectto ISP1.com.What is the L2TP Control Connections and Sessions for the subscribers?()
第2题:
The database users are connecting to the PROD database from different applications, thereby degrading the database performance. The senior database administrator suspects the large number of concurrent connections to be the reason for low performance and asks you to restrict the number concurrent connections per database user to one. Which action would you take to achieve this objective?()
第3题:
A. Setting a metric threshold
B. Implementing Database Resource Manager
C. Enabling resumable timeout for user sessions
D. Decreasing the value of the IDLE_TIME resource limit in the default profile
第4题:
You are administering a database and you receive a requirement to apply the following restrictions: 1. A connection must be terminated after four unsuccessful login attempts by user. 2. A user should not be able to create more than four simultaneous sessions. 3. User session must be terminated after 15 minutes of inactivity. 4. Users must be prompted to change their passwords every 15 days. How would you accomplish these requirements?()
第5题:
SORT_AREA SIZE and HASH_AREA_SIZE parameters are ignored in some of the user sessions. What could be the reason?()
第6题:
You work as a database administrator for Supportcenter.cn. One of the user sessions was terminated abnormally in the middle of a transaction. What does Oracle database do to recover it?()
第7题:
Which two statements are true regarding firewall user authentication?() (Choose two.)
第8题:
A.A single Control Connection and a single Session
B.A single Control Connection and multiple Sessions(one pers ubscriber)
C.Multiple Control Connections and a single Session
D.Multiple Control Connections and multiple Sessions(one per subscriber)
第9题:
Your database is open and the LISTENER listener is running. The new DBA of the system stops the listener byusing the command:LSNRCTL> STOP What happens to the sessions that are presently connected to the database instance()
第10题:
You created a profile APP_USER and assigned it to the users. After a month, you decide to drop theprofile.Some user sessions are currently connected to the database instance and are using the APP_USERprofile. This command is used to drop the profile: SQL> DROP PROFILE app_user; Which statement describes the result()