单选题You can control instance recover performance by setting parameters to define targets for（）AThe size of the redo buffer in SGA. BThe instance that will perform recovery in Real Application Cluster database. CThe number of blocks to be read during instance recovery, or the time needed to complete instance recovery. DThe number of passes through the redo logs made by the recovery process to identify blocks needing recovery.
单选题
You can control instance recover performance by setting parameters to define targets for（）
A
The size of the redo buffer in SGA.
B
The instance that will perform recovery in Real Application Cluster database.
C
The number of blocks to be read during instance recovery, or the time needed to complete instance recovery.
D
The number of passes through the redo logs made by the recovery process to identify blocks needing recovery.
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You are using an Automatic Storage Management （ASM） instance to manage the files of your production database. While studying the parameter file of the ASM instance， you find the following entry： ASM_DISKSTRING = /devices/* What could be the reason for this setting？（）A、to enable the ASM instance to identify the alert log fileB、to enable the ASM instance to identify the server parameter fileC、to enable the ASM instance to define the locations for Oracle Managed Files （OMF）D、to enable the ASM instance to identify all disks that can be accessed by it in the /devices directory
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单选题Your database runs in NOARCHIVELOG mode， and is backed up every night using RMAN scripts. However， last night your assistant DBA performed a manual operating system backup， instead of running the scripts. Today your database crashed and you now want to use the backups from last night. What do you need todo？（）AYou need to perform the restore and recover operations manually, because the backup was made manually. BFirst you need to resynchronize the catalog with the control file, and then you can use RMAN to recover the database. CFirst you need to add the backup to the catalog using the CATALOG command, and then you can use RMAN to recover the database. DYou can just use RMAN and recover the database, because RMAN automatically updates the catalog with the backup information.
单选题Which statement correctly describes network security settings in Cisco Network Assistant for the Catalyst Express 500 Switch？（）AThe LOW setting enables broadcast storm control， but has no effect on the number of devices that can connect to a switch portBThe LOW setting enables broadcast storm control and limits the number of devices that can connect to a switch port.CThe LOW setting disables broadcast storm control but limits the number of devices that can connect to a switch portDThe default network setting is HIGH
单选题You can control instance recover performance by setting parameters to define targets for（）AThe size of the redo buffer in SGA. BThe instance that will perform recovery in Real Application Cluster database. CThe number of blocks to be read during instance recovery, or the time needed to complete instance recovery. DThe number of passes through the redo logs made by the recovery process to identify blocks needing recovery.
单选题You are maintaining the PROD database of NetFx Corporation. You set the value of the SQL_TRACE parameter to TRUE. What will be the impact of this setting？（）A The SQL trace facility will generate the performance statistics for all the SQL statements for an instance and write them in the USER_DUMP_DEST directory.B The SQL trace facility will generate the performance statistics for all the SQL statements for a session and write them in the USER_DUMP_DEST directory.C The SQL trace facility will generate the performance statistics for all the SQL statements for an instance and write them in the BACKGROUND_DUMP_DEST directory.D The SQL trace facility will generate the performance statistics for all the SQL statements for a session and write them in the BACKGROUND_DUMP_DEST directory.
单选题When you are performing media recover， and an archived log is lost or corrupt， which type of recover must you perform？（）AUntil SCNBUntil timeCUntil cancelDRecover using backup control file.