I read a very large thread on this message board about oracle myths
that mentioned in passing that those blocks that we novices think are
contigeous - aren't - because of how they are allocated by the OS.
(you cruel cruel people for dropping this bombshell :) )
It made me wonder if there is a store of the actual pysical address of
each block on the disk controler/disk/partition etc held by Oracle.
If so, where? If the lookup is done using the rowid and the OS
resolves the datafile number etc and knows where to look for it, is
there an index of all the rowid's and which segment they relate to?
Received on Tue Feb 25 2003 - 05:26:05 CST
