[comp.databases] SQL*NET Summary Of Responses

nigel@cnw01.storesys.coles.oz.au (Nigel Harwood) (10/18/90)

Thanks to those that replied to my request for information
about SQL*NET, following is a summary :

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SQL*NET doesn't run on the transport layer but on the higher layers.
So it will run on TCP/IP (with whatever hardware/transport your hardware
vendor supports), on DECNET, on LU6.2, etc.

For SQL*NET to run on X.25, you need some protocol on top of it,
such as TCP/IP.

SQL*NET will allow a process on system-A to have a table(s)
open on system-A and system-B simultaneously.
But there is no way to do a commit concurrently on the two systems.

SQL*NET does not require NFS.

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SQL*NET runs over TCP/IP and Towernet if you're using Unix V.2.

On V.3, it runs over TCP/IP for certain, I'm not sure about some of the
other options you mentioned.

SQL*NET does not require NFS, and in fact  Oracle specifically recommends 
that you not keep data base files on a remote NFS filesystem.  This
restriction is, I believe, due to concerns about reliability of disk writes.

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-- 
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