更多"our database instance is running. Y"的相关试题:
[单项选择]Your database instance is running.You are not able to access Oracle Enterprise Manager Database Control because the listener is not started.Which tool or utility would you use to start the listener?（）
A. Oracle Net Manager
B. Listener Control utility
C. Database Configuration Assistant
D. Oracle Net Configuration Assistant
[多项选择]You configure your database Instance to support shared server connections.Which two memory areas that are part of PGA are stored in SGA instead, for shared server connection?（）
A. User session data
B. Stack space
C. Private SQL area
D. Location of the runtime area for DML and DDL Statements
E. Location of a part of the runtime area for SELECT statements
[单项选择] Examine the parameter for your database instance: You generated the execution plan for the following query in the plan table and noticed that the nested loop join was done. After actual execution of the query, you notice that the hash join was done in the execution plan: Identify the reason why the optimizer chose different execution plans.（）
A. The optimizer used a dynamic plan for the query.
B. The optimizer chose different plans because automatic dynamic sampling was enabled.
C. The optimizer used re-optimization cardinality feedback for the query.
D. The optimizer chose different plan because extended statistics were created for the columns used.
[单项选择] A database instance is using an Automatic Storage Management (ASM) instance, which has a disk group, DGROUP1, created as follows: SQL> CREATE DISKGROUP dgroup1 NORMAL REDUNDANCY FAILGROUP controller1 DISK '/devices/diska1', '/devices/diska2' FAILGROUP controller2 DISK '/devices/diskb1', '/devices/diskb2' ; What happens when the whole CONTROLLER1 Failure group is damaged?（）
A. The transactions that use the disk group will halt.
B. The mirroring of allocation units occurs within the CONTROLLER2 failure group.
C. The data in the CONTROLLER1 failure group is shifted to the CONTROLLER2 failure group and implicit rebalancing is triggered.
D. The ASM does not mirror any data and newly allocated primary allocation units (AU) are stored in the CONTROLLER2 failure group.
[多项选择] Examine the parameters for your database instance: Which three statements are true about the process of automatic optimization by using cardinality feedback?（）
A. The optimizer automatically changes a plan during subsequent execution of a SQL statement if there is a huge difference in optimizer estimates and execution statistics.
B. The optimizer can re optimize a query only once using cardinality feedback.
C. The optimizer enables monitoring for cardinality feedback after the first execution of a query.
D. The optimizer does not monitor cardinality feedback if dynamic sampling and multicolumn statistics are enabled.
E. After the optimizer identifies a query as a re-optimization candidate, statistics collected by the collectors are submitted to the optimizer.
[单项选择]Which background process of a database instance, using Automatic Storage Management (ASM), connects as a foreground process into the ASM instance?（）
A. ASMB
B. PMON
C. RBAL
D. SMON
[单项选择] You are managing an Oracle Database 11g instance with ASM storage. The ASM instance is down. To know the details of the disks in the DATA disk group , you issued the following ASMCMD command: ASMCMD> lsdsk -I -d DATA Which statement is true regarding the outcome of this command?（）
A. The command succeeds but it retrieves only the disk names.
B. The command produces an error because the ASM instance is down.
C. The command succeeds but it shows only the status of the ASM instance.
D. The command succeeds and retrieves information by scanning the disk headers based on an ASM_DISKSTRING value.
[多项选择]You are managing an Oracle Database 11g instance.You want to create a duplicate database for testing purpose. What are the prerequisites for performing the active database duplication?（）
A. The source database backup must be copied over the net for test database.
B. The source database must be run in ARCHIVELOG mode if the database is open.
C. The source database must be shut down cleanly if the database is in mounted state.
D. A net service name should be set up and a listener configured with the target as well as the source database.
[单项选择] our database instance is started using the server parameter file （SPFILE）. You executed a command tochange the value of the LOG_BUFFER initialization parameter：ALTER SYSTEM SET LOG_BUFFER=32M SCOPE=BOTH； What would be the outcome of this command（）
A. The command succeeds only if Automatic Memory Management is not enabled.
B. The command succeeds， but you need to restart the database for changes to take effect.
C. The command returns an error because the size of the redo log buffer cannot be changed dynamically.
D. The parameter value is changed and it comes into effect as soon as space becomes available in theSystem Global Area （SGA）
[单项选择] You are managing an ASM instance. You previously issued the following statements: ALTER DISKGROUP dg1 DROP DISK disk2; ALTER DISKGROUP dg1 DROP DISK disk3; ALTER DISKGROUP dg1 DROP DISK disk5; You want to cancel the disk drops that are pending for the DG1 disk group. Which statement should you issue?（）
A. ALTER DISKGROUP dg1 UNDROP disk2, disk3, disk5;
B. ALTER DISKGROUP dg1 UNDROP;
C. ALTER DISKGROUP dg1 UNDROP DISKS;
D. You cannot cancel the pending disk drops.
[单项选择] 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?（）
A. by granting a secure application role to the users
B. by creating and assigning a profile to the users and setting the REMOTE_OS_AUTHENT parameter to false
C. By creating and assigning a profile to the users and setting the SEC_MAX_FAILED_LOGIN_ATTEMPTS parameter to 4
D. By Implementing Fine-Grained Auditing (FGA) and setting the REMOTE_LOGIN_PASSWORD_FILE parameter to none.
E. By implementing the database resource Manager plan and setting the SEC_MAX_FAILED_LOGIN_ATTEMPTS parameters to 4.
[单项选择]You are maintaining the SALES database.You have added a new disk to a disk group. Automatic Storage Management performs the rebalancing activity. You want to speed up the rebalancing activity.Which parameter should you specify to control the speed of the rebalancing activity?（）
A. ASM_POWER_LIMIT
B. ASM_DISKSTRING
C. ASM_DISKGROUPS
D. INSTANCE_TYPE
[单项选择]You are maintaining the SALES database. You have added a new disk to a disk group. Automatic StorageManagement performs the rebalancing activity. You want to speed up the rebalancing activity.Which parameter should you specify to control the speed of the rebalancing activity?（）
A. ASM_POWER_LIMIT
B. ASM_DISKSTRING
C. ASM_DISKGROUPS
D. INSTANCE_TYPE
[多项选择] You support Oracle Database 12c Oracle Database 11g, and Oracle Database log on the same server. All databases of all versions use Automatic Storage Management (ASM). Which three statements are true about the ASM disk group compatibility attributes that are set for a disk group?（）
A. The ASM compatibility attribute controls the format of the disk group metadata.
B. RDBMS compatibility together with the database version determines whether a database Instance can mount the ASM disk group.
C. The RDBMS compatibility setting allows only databases set to the same version as the compatibility value, to mount the ASM disk group.
D. The ASM compatibility attribute determines some of the ASM features that may be used by the Oracle disk group.
E. The ADVM compatibility attribute determines the ACFS features that may be used by the Oracle 10g database.
[单项选择] Your database instance is configured with automatic undo management and the UNDO_RETENTIONparameter is set to 900 seconds. You executed the following command to enable retention guarantee: SQL> ALTER TABLESPACE undotbs1 RETENTION GUARANTEE; What effect would this command have onthe database（）
A. The extents in the undo tablespace retain data until the next full database backup.
B. The extents containing committed undo in the undo tablespace are not overwritten for at least 15 minutes.
C. The extents containing committed data in the undo tablespace are not overwritten until the instance is shutdown.
D. The extents containing committed undo in the undo tablespace are transferred to Flash Recovery Areabefore being overwritten
[单项选择] Your database instance is currently configured to support 1，500 connections. The Web applicationthat uses the database allows a large number of users to work with the database simultaneously. Someusers of the Web application do not interact with the server all the time. You want to increase the scalability by configuring the database instance to handle more connections. Asa DBA， which configuration would you set to support more than 1，500 connections at a time（）
A. You would configure more listeners for the database.
B. You would configure the database in shared server mode to use the connection pooling feature.
C. You would increase the value of the PGA_AGGREGATE_TARGET initialization parameter that assigns more session memory to users.
D. You would decrease the value of the PRIVATE_SGA resource limit in the profiles used by the users to accommodate more session information.
[多项选择] Your database instance is running with full workload after database creation. You have decided to use a fixed-size undo tablespace. You want to use the Undo Advisor to estimate the capacity of the undo tablespace. Which two factors must you consider before using the Undo Advisor to estimate the capacity of the undotablespace（）
A. The retention period to support flashback
B. The expected length of the longest-running query
C. The number of undo tablespaces in the database
D. The size of the Flash Recovery Area for the database instance
