Dennis Heidner wrote in message <01c0031b$4428f8b0$031e82c0@bigbird>...
>Because Oracle is/was imposing their file system on top of MPEiX, it
>probably is somewhat slower then the HP-UX equivalent.

Not quite.  The Oracle 7 implementation uses a file access scheme which only
appears to run 'on top' of MPE/iX due to pseudo-mapping.   It is more of a parallel
file system that converges at the Intrinsic, Space Management, and Directory level.
It does its own disk I/O, caching, logging, etc., and is actually quite efficient for
the purpose.  I don't know of any reason that it would be any slower than HPUX --
since Oracle's underlying file access technology is very similar for most computing
platforms.  At least this was the case when Version 7 was ported to MPE/iX
 6 or 7 years ago.  The previous version may have run "on top" of MPE, but I have
no experience with that stuff.   I also don't know of any reason it would be any faster,
but I haven't seen any "apples-to-apples" test data comparing the performance
between MPE and HPUX.   There are other factors that might affect performance
more than the file access method (Compilers, Memory Mgmt., Process model,  etc.)

Winston K. (Spent his summer at Redwood Shores in '93)