RE: Oracle Shared Server Implementation
- From: "Dunbar, Norman (Capgemini)" <norman.dunbar.capgemini@xxxxxxxxxxxxxxxxxxxxxxxxx>
- To: <JBECKSTROM@xxxxxxxxx>, "oracle-l-freelists" <oracle-l@xxxxxxxxxxxxx>
- Date: Mon, 1 Aug 2011 13:55:10 +0100
>> When we were on 32-bit hardware, for one of our databases we
>> had to implement shared servers due to hitting the 32-bit
>> memory limit. Since that time, we have migrated all of our
>> systems to 64-bit hardware. My question is, on 64-bit
>> hardware is there ever a need for shared servers?
One of the ancient systems I used to work on a few years back had an
"interesting" way of retrieving the data to fill in a few fields on a
Visual Basic (yuk!) screen. For each field it would login, run a query
and the log out again. Repeat for as many fields there were on screen!
Given that it didn't take long for there to be no usable ports after a
few users were up and running, as there is/was a timeout between a port
being closed and when Windows (for it was a Windows server that the
database ran on) could reuse the port for another connection. At that
point, everyone would just hang waiting for a port. (Or possibly crash
out, I can't quite remember!)
The solution was to implement shared server. This worked excellently
with 5 shared servers and the users were happy. The (off shored)
developers were told to fix it PDQ. They did, but the shared server
system remained in place.
So, I'd hate to think that there are still any systems like that one out
there in user land, but if so, shared server might be the only remedy -
if you can't get the developers to fix it - even on 64 bit.
Cheers,
Norm.
Norman Dunbar
Contract Senior Oracle DBA
Capgemini Database Team (EA)
Internal : 7 28 2051
External : 0113 231 2051
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