[Info-vax] Oracle Database vs Oracle/Rdb

[Arne Vajhøj]

On 6/27/2019 3:23 AM, Jan-Erik Söderholm wrote:
> Den 2019-06-27 kl. 04:12, skrev Arne Vajhøj:
>> On 6/26/2019 9:29 PM, Dave Froble wrote:
>>> On 6/25/2019 7:35 PM, Arne Vajhøj wrote:
>>>> RMS is used in two meanings:
>>>> * a technically correct of everything going through RMS (which is 
>>>> almost
>>>> all IO)
>>>
>>> Well, that isn't correct.  While RMS is very available on VMS, there 
>>> are other types of I/O.  Arne may not know about them, but they do 
>>> exist.
>>
>> It is possible to use SYS$QIO(W) but I suspect that >99% of all
>> IO goes through RMS.
> 
> In respect to the subject of this thread, Rdb doesn't do RMS
> for regular database I/O. Some operations (I think writing som
> of the log files and maybe some of the backup work) use RMS.
> But the important daily database I/O is not using RMS.
> Probably faster that way...

For special need SYS$QIO(W) - and for newer systems
SYS$IO_PERFORM - can be and are used.

Arne