q. 7 : which of the following is true regarding control files
　　1. oracle recommeds atleast two control files stored on two separate disks
　　2. oracle recommeds atleast two control files stored on one disk
　　3. oracle recommeds to store one control file

　　4. one control file is not enough to run a database
　　q. 8 : tom created a database with a db_block_size of 2k, he wants to
　　1. issue alter system set db_block_size=4k command
　　2. recreate the database with the new setting

　　3. it can be done in both the ways
　　4. the db_block_size cannot be 4k
　　2
　　q. 9 : howmany rollback segments are required for oracle to startup apart
　　1. oracle can start with just the system rollback segment
　　2. oracle needs atleast 3 rollback segments before it can start
　　3. oracle needs a temp rollback segment before it can start
　　4. none of the above
　　1
　　q. 10 : the unit of measurement for db_block_size intialization parameter is
　　1. blocks
　　2. byte
　　3. page
　　4. row
　　2
　　q. 11 : this tablespace is a must before you run the database instance
　　1. rollback
　　2. tools
　　3. temp
　　4. system
　　4
　　q. 12 : which initialization parameter determines the rollback segments that
　　1. rollbacks
　　2. logfile group
　　3. rollback_segments
　　4. dba_rollback_segs
　　3
　　q. 13 : which of the following is a valid but undocumented parameter in oracle
　　1. _corrupt_rbs
　　2. _corrupt_redo
　　3. _corrupt_rollback_segments
　　4. none of the above

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