[Info-vax] OpenVMS x86-64 and RDB and DB's in general on OpenVMS

[Arne Vajhøj]

On 6/30/2015 3:55 PM, Jan-Erik Soderholm wrote:
> JF Mezei skrev den 2015-06-30 21:12:
>> On 15-06-30 09:08, clairgrant71 at gmail.com wrote:
>>> Porting Oracle and Rdb to VMS are both huge, but very different,
>>> undertakings.
>>
>> On the one hand, one is told that for most ports, it is just a matter of
>> recompiling.  (I realise there is the cost/trouble of testing/validating
>> etc).
>>
>> What sort of system features would Oracle and RDB use which are
>> architecture specific and require much work to port from one 64 bit
>> architecture to another on the same opertating system ?
>
> The specific architecture in itself!
>
> Today Rdb produces IA64 machine code on the fly (and before that
> VAX and Alpha naitive machine code), and that will need to be
> ported to X86 machine code. The same for the pre-compilers that
> also compiles the SQL EXEC, END EXEC sections into machine code.

The precompilers do not generate XXX source code that are sent
through the XXX compiler??

> There is also a need for a supported X86 version of BLISS. The
> lack of that made the "Rdb8 for NT" to be canceled. That is
> probably also need for VMS in itself, anyway... :-)

I would say so.

Arne