System altered.
sys@SYBO2SZ> show parameter read_count;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_file_multiblock_read_count integer 128
sys@SYBO2SZ> startup force; --->reset mbrc后需要重新启动db
sys@SYBO2SZ> show parameter read_count
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_file_multiblock_read_count integer 44
sys@SYBO2SZ> ho grep scatter /u02/database/SYBO2SZ/udump/sybo2sz_ora_24890.trc | tail
WAIT #14: nam='db file scattered read' ela= 682 file#=5 block#=21431 blocks=44 obj#=53208 tim=1337626216154292
WAIT #14: nam='db file scattered read' ela= 4497 file#=5 block#=21475 blocks=38 obj#=53208 tim=1337626216163586
WAIT #14: nam='db file scattered read' ela= 586 file#=5 block#=21515 blocks=44 obj#=53208 tim=1337626216166611
WAIT #14: nam='db file scattered read' ela= 691 file#=5 block#=21559 blocks=44 obj#=53208 tim=1337626216170137
WAIT #14: nam='db file scattered read' ela= 4860 file#=5 block#=21603 blocks=38 obj#=53208 tim=1337626216177698
WAIT #14: nam='db file scattered read' ela= 592 file#=5 block#=21643 blocks=44 obj#=53208 tim=1337626216180540
WAIT #14: nam='db file scattered read' ela= 292 file#=5 block#=21687 blocks=22 obj#=53208 tim=1337626216183493