Can I Have 2000 And 2005 Instances On On Server

May 14, 2007

Hi all

I have a server with SQL Server2000 databases in it..
Now i would like to install SQL Server 2005 on the same server with out disturbing SQL Server 2000 databases

I need to create a seperate instance for SQL Server 2005..

is it possible to have both the instances on the same server.

Thanks

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Trouble Enumerating SQL Server Instances With SQL 2000/2005 On Network

Dec 4, 2007



Hi,

We have (after several weeks of testing in all kind of environments) send out a new version of our application to several of our customers. Within days problems where drippin in; After looking for the problem on various customer situations we found a problem which I think is rather disturbing and very odd. I'll describe the situation, on which we finally managed to recreate the problem, here.

In my problem I use the following configuration:

Windows 2003 (standard edition) AD network with 2 domain controllers, multiple Windows XP workstations, some without SQL instances, some with SQL 2000 instances, some with SQL 2005 instances and even one with SQL 7 running.
All run a 32 bit OS.

Tools to reproduce:

ListSQLSvr application (found on SQLDev.net) to enumerate the instances.


Problem description:
--------------------------------------------------
I am running the machine called DEV001, which has SQL 2000 (instancename DRUMIS) and SQL 7.0 (has no instancename so this is the root instance) installed.

In any 'normal' situation all the runnings SQL instances are visible on the network like this:




Code Block
C:>listsqlsvr -X
(local);Clustered:No;Version:7.00.623
ADM002DRUMIS;Clustered:No;Version:8.00.194
DEV001DRUMIS
DEV001DRUMIS;Clustered:No;Version:8.00.194
DEV002DRUMIS;Clustered:No;Version:8.00.194
DEV002EXPRESS;Clustered:No;Version:9.00.3042.00
DEV002EXPRESS
INSADBACKOFFICEDRUMIS;Clustered:No;Version:8.00.194
INSADBACKOFFICEEXACT;Clustered:No;Version:9.00.3042.00
INSADOFFICEWSUS;Clustered:No;Version:8.00.194
SUP001DRUMIS;Clustered:No;Version:8.00.194




When I turn the SQL 2005 Browser service off on the machine called DEV002 the list looks like:




Code Block
C:>listsqlsvr -X
(local);Clustered:No;Version:7.00.623
ADM002DRUMIS;Clustered:No;Version:8.00.194
DEV001DRUMIS;Clustered:No;Version:8.00.194
DEV001DRUMIS
DEV002
DEV002EXPRESS
DEV004DRUMIS;Clustered:No;Version:9.00.3042.00
INSADBACKOFFICEDRUMIS;Clustered:No;Version:8.00.194
INSADBACKOFFICEEXACT;Clustered:No;Version:9.00.3042.00
INSADOFFICEWSUS;Clustered:No;Version:8.00.194
SUP001DRUMIS;Clustered:No;Version:8.00.194




Notice that the browser service might be off on DEV002, you can still see the EXPRESS instance and a new root instance has appeared (though it doesn't exist!)??

After restarting the Browser service all is OK again.

When I turn on Hide Server in the SQL 2000 TCP/IP properties (or turn it on in the registry [HKEY_LOCAL_MACHINESOFTWAREMicrosoftMicrosoft SQL ServerDRUMISMSSQLServerSuperSocketNetLibTcp] "TcpHideFlag"=dword:00000001) on the DEV002 computer something real scary is happening..
The list looks as follows:



Code Block
C:listsqlsvr -X
(local)
ADM002
DEV001
DEV002
DEV004
INSADBACKOFFICE
INSADOFFICE
SUP001






When someone has entered a database (for example the backoffice database on INSADBACKOFFICEEXACT) the list looks as follows (for a short moment; 5 secs or so):



Code Block
C:listsqlsvr -X
(local)
ADM002
DEV001
DEV002
DEV004
INSADBACKOFFICEDEVELOP;Clustered:No;Version:8.00.194
INSADBACKOFFICEDRUMIS;Clustered:No;Version:8.00.194
INSADBACKOFFICEEXACT;Clustered:No;Version:9.00.3042.00
INSADOFFICE
SUP001




Notice now that ALL instances are gone and no extended information is available. In the Query Analyser and in the SQL Management Studio when browsing you'll see this as well!
When someone is accessing a database instance it appears for a few seconds again.

Since our installation and applications rely on selecting a existing instance it will fail in the above situations (or at least not showing all available instances).

In my opinion this is a bug somewhere!
Note that even when the SQL Services are stopped on DEV002 (leaving the Browser service running) it still seems to block out ALL instance on the ENTIRE network!

I don't mind that one INSTANCE or even the entire MACHINE is hidden from the network, but ALL instances on ALL machines??

And the SQL Browser issue also worries me a bit since it does not stop the possibily to browse the SQL instances; it removes the SQL2000 instances but adds a root instance which doesn't even exist! Also the extended info is stripped.

Can anyone help me solve this/advise?

Also mind that in any situation there might run a lot of computers with a lot of SQL instances and I cannot tell our customers to find which machine has the SQL TCP/IP properties set to Hide...
It even seems that in some situations SBS 2003 does the hiding automatically on Install? And if so, when and why?

Regards,

Albert van Peppen
Senior System Engineer
Insad Grafisch b.v.

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