installing sql 2008 and sql 2012 on the same server

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installing sql 2008 and sql 2012 on the same server

BBSR

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October 30, 2013 at 9:13 am

#281868

hi,
Can we install sql 2008 and sql 2012 on the same server and if we can then how is the default port number assigned. If I am not wrong the default port for a default instance is 1433. so if sql 2008 default instance takes up 1433 what port does the default instance of sql 2012 takes up?
Thanks

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AndrewSQLDBA SSC-Insane Points: 21827 More actions · Answer 1

Yes, you can install as many different version as you wish. I have them setup that way. I used a named instance for each also. I did not use the default instance name for either. I was not concerned about the port numbers. I knew that SQL and the Server OS would take care of that, so I did not worry about it. I think they are both using port 1433 actually.

Andrew SQLDBA

BBSR SSCommitted Points: 1921 More actions · Answer 2

so on both installation I would have to create named instances - servername\sql2008named_Instance and servername\sql2012_namedInstance and I cannot have a default instance on any of them?

Gail Shaw SSC Guru Points: 1004504 More actions · Answer 3

You can't install two default instances. If you install 2008 as the default instance then 2012 will have to be a named instance. You can install both as named instances. Named instances do not use port 1433, they use dynamic ports. You can't have two instances listening on the same port.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass

Gail Shaw SSC Guru Points: 1004504 More actions · Answer 4

bbsr (10/30/2013)
so on both installation I would have to create named instances - servername\sql2008named_Instance and servername\sql2012_namedInstance and I cannot have a default instance on any of them?

One of them can be a default instance. One will have to be a named instance. Your choice which is the default or whether to make them both named.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass

BBSR SSCommitted Points: 1921 More actions · Answer 5

thank you. now I have a clear idea. I know sql server can have one default instances and more than one named instance but I had the idea that as it would be two different version of sql server installation (2008 and 2012) I can have a default instance on each one.