Which of the following Oracle features is enabled by setting a nonzero value for the MEMORY_TARGET initialization parameter？（）  

A . increase the size of redo log files B . increase the size of the undo tablespace C . increase the size of the Database Buffer Cache D . increase the size of the default temporary tablespace E . enable the retention guarantee for the undo tablespace

A . When the instance is started  B . When the database is mounted  C . When the database is opened  D . When the database is closed

A .  The operating system local time zone will be set for a user session using the operating system environment variable. B .  The database local time zone will be set for a user session using the operating system environment variable. C .  The operating system local time zone will be set for the database using the operating system environment D .  The database local time zone will be set for the database using the operating system environment variable.

A . Fourteen servers per rack likeBladeCenter B . Two servers per rack for optimal cooling cost C . One server per rack for optimal cooling and energy efficiency D . Four servers per rack （twoexach half high） for optimal cooling

A . take the backup of the flash recovery area less frequently B . increase the value of the UNDO_RETENTION initialization parameter C . change the value of the WORKAREA_SIZE_POLICY initialization parameter to AUTO D . change the backup retention policy to retain the backups for a smaller period of time  E . increase the value of the DB_RECOVERY_FILE_DEST_SIZE initialization parameter F . increase the value of the CONTROL_FILE_RECORD_KEEP_TIME initialization parameter

A . guarantee undo retention B . add one more redo log group C . size the redo log files appropriately D . size the UNDO tablespace appropriately E . size the SYSTEM tablespace appropriately F . configure an appropriate undo retention interval G . change automatic undo management to manual

A . guarantee undo retention B . add one more redo log group C . size the redo log files appropriately D . size the UNDO tablespace appropriately E . size the SYSTEM tablespace appropriately F . configure an appropriate undo retention interval G . change automatic undo management to manual

A . the alert log file and the trace files B .  the redo log files C .  the control file D .  the change tracking file

A . You performed rollback after commit. B . If a log switch occurs in your database. C . Thearchiverfails to generate an archived log file. D . Instance recovery fails to find one of the redo log files. E . A long-running query is unable to get read-consistent image. F . If you perform manual undo management operations in auto mode.

A .  If the REMOTE_LOGIN_PASSWORDFILE parameter is set to SHARED in the initialization parameter file， then a maximum of three users can be granted the SYSDBA or SYSOPER privileges. B .  If the REMOTE_LOGIN_PASSWORDFILE parameter is set to EXCLUSIVE in the initialization parameter file， then a maximum of three users can be granted the SYSDBA or SYSOPER privileges. C .  If the REMOTE_LOGIN_PASSWORDFILE parameter is set to SHARED in the initialization parameter file， then the SYSDBA and SYSOPER privileges can be granted to other users as long as space in the password file is D .  If the REMOTE_LOGIN_PASSWORDFILE parameter is set to EXCLUSIVE in the initialization parameter file， then the SYSDBAand SYSOPER privileges can be granted to other users as long as space in the password file is available.

A . User initiated edit document command B . Silent navigation from an edited page C . User initiated save command D . Removal of a locked for editing statu

A．Fingerprints and Their Use B．Policemen and Fingerprints C．Fingerprints Are Useful Evidence D．Fingerprints Identify Criminals without Mistake

A．Heart Disease B．Depression and Fatality Rate C．Depression D．Depression Hurts the Heart