SQL 2012 :: Compatibility Mode Causes Query Not To Finish
Aug 8, 2015
We recently upgraded out SQL version from SQL2008R2 to SQL2014. As such, the compatibility mode changed to SQL2104 (120).
We have several queries that used to run fine that now take forever to bring back results. There are no errors (which surprised me). They just take way too long now. PLus they seem to be causing high I/O and CPU.
If I change the compt level back to SQL2008 - these queries run fine.
QUERY with SQL2008 compt level - finished in 2 minutes.
QUERY with SQL2014 compt level - finishes in 3 hours 22 minutes.
same exact query - same server - only thing changed was compatibility level.
WHat do I look for in the queries that could be causing this? (they look fine but obviously I'm missing something here)..
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Jul 20, 2015
I have a 2005 database sitting on a 2012 server, we're looking to change its compatibility mode from 90 to 110 so we can avail of what 2012 offers.I did a migration project a couple years ago for SQL Server 2000 databases changing to 2008 R2 and we ran into loads of problems where we left most databases in compatibility mode 80 as these were application databases that the owners couldn't stand over in terms of deprecated code / features no longer in use in 2008 R2.
From what I can see with changing from 90 to 110, there doesn't seem to be as many issues but I just want to double check if there's a way to confirm this. I know upgrade advisor is a handy tool but will it pick up database specific issues as opposed to database server compatibility issues? URLs...I know UA won't cover all the bases but it would look good when attached to the report I'm submitting recommending the change.
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Mar 24, 2014
We upgraded QA and production to sql server 2012 last year ( in place) leaving the user databases at sql 2005 ( 90 ). A few months ago the QA user databases were set to sql 2012 compatibility mode. Management is worried about upgrading production and wants to know if we can quickly roll back.
I want to confirm that we can roll back using the same command, and if dbcc freeproccache can be used to avoid having to update all statistics.
ALTER DATABASE <mydatabase> SET COMPATIBILITY_LEVEL = 110
ALTER DATABASE <mydatabase> SET COMPATIBILITY_LEVEL = 90
This works fine in QA on my own test user database. No errors.
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Jul 16, 1999
We have some users who are nervous about our upgrading to SQL Server 7.0 even though we will use 6.5 compatibility mode initially while we work through 7.0 upgrade issues in the applications.
Has anyone had bad experiences with the 6.5 compatibility mode feature? Just how good is it?
Cheers
Matt
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May 1, 2008
I have a Sql Server 2005 instance that was upgraded from 2000. The compatibility mode of master is still set to 80. Can I change this to 90?
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Dec 20, 2006
I currently use MSDE and now I need to upgrade because we moved to 2005. The problem for me is teh compatibility mode. I need to change it to 80 (2000).
I also need to do it via command line because we have a base command line install for users.
We use it to attach databases and view information.
Is there a way to install SQL Express with a default mode of 80 (SQL 2000).
THanks
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Sep 14, 2004
I have been migrating Databases from a SQL Server 7.0 Instance to a 2000 Instance. Basically the method I use is as follows:
a)Create a new Database on the Destination Server (same name as the Source) When I create the new Database on my destination server, the compatibility mode is '80' and the source is always '70'
b) do a 'revlogin' on the Source Server and use the output from that query to recreate the logins on the destination server
c) make sure that the default DB for the newly creates logins are correct and change them if necessary
d) Backup the DB on the Source Server and Restore it to the Destination Server.
e) Check login permissions and fix any orphaned users - usually I don't find any that need to be fixed, but I always check.
I've read BOL on Changing the compatibility mode on the Database... but I'm still unsure when I would have to do this and why???????????????? SHOULD I be changing the compatiblity mode from 80 to 70 when migrating Databases from 7.0 to 2000???? Any advice on moving DBs in this manner would be appreciated.
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Feb 1, 2008
On my current contract we have a SQL 2005 box with a user database and the tempdb database in 6.5 compatibility mode. I would like to remove the user database and change the tempdbs compatibility mode. When you try and use EM just about everything fails with errors about collation or syntax. From what I have found it could be related to the tempdb being in 6.5 compatibility mode but either way I would like to remove this old unused DB.
My question is after I remove the user DB and reset the tempdb compatibility mode what will or could break? I haven't been able to find much on what would change or what to look out for after the change is made. Has anyone else done this? If so what issues did you face.
Thanks
Doug
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Jan 5, 2001
I'm running SQL Server 7.0. I have a DB running with 6.5 compatibility mode.
Do INSERT, UPDATE or DELETE queries use row level locking in this DB ?
(I know if I set the db compatibility mode to 7.0 row level locking will be enabled)
Thanks in advance for your help.
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Oct 29, 2007
Hi,
I've been scouring the forums and the web for anything that would substantiate an argument for database application developers to keep developing in SQL 8.0 when we have migrated to SQL 2005.
I read somewhere that compatibility 8.0 mode is an intern stepping stone for migrating from 8 to 9, but it seems 2005 will handle and run compat 8.0 databases just fine.
So am finding it really diffucult to substantiate my argument against running 2005 with all databases in compatibility 8 mode indefinitly.
Any suggestions or links that could help me with this.
Joe
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Mar 11, 2008
Hi,
We are planning to upgrage our SS 2000 databases(couple of hundreds) to SS 2005.
To minimise the potential work arounds, it is agreed to have complex databases, continue running on compatibility mode 80. What are the potential impact of having database on mode 80(apart from not being able to use new feature)on SS2005?
Fruther how we can we import SS 2000 DTSs to SS 2005 SSIS in an cluster environment?
Thanks,
Sajish
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Nov 15, 2007
Hi All
I€™m having a problem setting up maintenance plans on one of our SQL 2005 servers but first here€™s a bit of back ground.
The server is a Virtual machine running win2k3R2 SP2 server std and SQL 2k5, A supplier arrived to install and app on the server when discovering there app didn€™t work with 2k5 they seem to have set the 2 dbs on the server into 2k compatibility mode and set the entire SQL install to think its a 2000 install. (I€™m not sure how this is done all I can see is the wrong version number in management studio) The problem this is giving me it that the folder in management studio for Database Maintenance Plans is no longer under the management folder instead it under a sub folder called Legacy (which is how management studio seems to deal with all registered 2000 instances) and as such a can no longer right click and create new database maintenance plans is there any way around this or will I have to setup my backup job manually?
Ohh and have the supplier shot at dawn
Thanks All
Jon
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Sep 17, 2007
Can you run SQL Server 2005 in SQL Server 2000 compatibility mode and still use it with Reporting Services 2005?
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Apr 6, 2001
Here's my dilema, I want to run a stored procedure that starts another stored procedure running, but does not wait for the stored procedure to complete execution.
The stored procedure should execute immediately, and leave the other procedure to complete running in the background. Is there any way to do this?
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Aug 14, 2014
I have this query I need for a report. Originally it was 4 queries to be used in Crystal Reports. Now I want to create the same report with SSRS and therefore I incorporated all queries in one in order not to use subreports [URL].....
Tempdb fills up to nearly 90 GB. I am running SQL Server on a local box, so I am sure there is no other traffic. Here is the query:
SELECT AdHaupt.NSprache_ID
,AdHaupt.mengentext AS mengentextHaupt
,AdHaupt.Einzelpreis
,AdHaupt.Anzeigebezeichnung
,AdHaupt.Gesamtpreis
[Code] ...
I ran it with TOP 10 as well, just to see if it will finish at all, but it never did (ran for an hour now).
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Mar 9, 2000
Hello,everyone!!
There is a query which when executed in the grid mode(ctrl+d) takes approx 0.02 seconds(about 21,000
rows) But when I execute in the text mode, it takes about 0.40 seconds!!
Why is this difference?
Also, when the records from this table are read from a VB application, they are equally slow (as in the text mode!)
Why is it so slow on the text mode & relatively faster in the grid mode?
Has anyone got any idea on ‘Firehose’ style cursor ?(which may speed up access of data in the VB application)
Rgds,
Adie
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Dec 18, 2007
I am in the process of migrating from Sql Server 2000 to 2005. Part of my plan is to move some database's to 2005, but use the 2000 compatibility mode for the short term. My issue is this, our DR boxes are still on SQL Server 2000, would I still be able to use our log shipping processes? Or would I be better off in starting with migrating the DR boxes to 2005 first?
Thanks in advance.
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Apr 8, 2015
what are the SS rules around forwards compatibility? For example, I have a SS2014 DB instance but I'm able to query it through SSMS2012 Express. Also, I backed up a SS2012 database and restored it into a SS2014 instance which works as expected. Should I also be able to back up a SS2014 instance that was restored from SS2012 and restore it into a separate SS2012 instance?
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Feb 28, 2014
I have a DB, MDF is about 170GB, log 200GB. When I do a restore of it, the backup takes about 20 minutes to get to 100% but then it just stays there in Restoring Mode.
I have specified the WITH RECOVERY option.
What is happening that it doesn't commit the backup for some reason?
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Jan 9, 2015
I have a bat file that kicks off a master package, which kicks off about 300 child packages. My bat file is working correctly, however there seems to be issues executing packages in 64 bit mode.
So my question is...
Is there a way to specify in the bat file to execute packages in 32 bit mode and not 64 bit?
bat file:
"C:Program FilesMicrosoft SQL Server110DTSBinnDTExec.exe" /f "E:MasterPackage.dtsx"
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Jan 29, 2015
Is it possible to put master database to single mode, if yes then whats the procedure. The reason behind the scenario is to restore master database from backup for which its strictly recommended to put the database in single mode. But I m not able to do so.
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Feb 21, 2014
I have created a Transactional Replication Publication on my SQL 2012 server.When I log into another server on the domain running 2008R2 and try to subscribe to the 2012 Publication, I get the following error when clicking on "Add SQL Server Subscriber": "The selected Subscriber does not satisfy the minimum version compatibility level of the selected publication"
The 2012 DB is set as 2008 Compatibility Mode?Am I not able to Publish from 2012 to 2008?.I was using SSMS 2008 to connect to my 2012 Instance, thats why it didn't work...
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Jun 27, 2015
Secondary replica database(setup in async mode) of AlwaysON went in "restricted mode" during weekly reindex operation.
So I have tried below steps
1) Executed following statement on the same secondary replica database where the issue exists
alter database <DBNAME> set multi_user with rollback immediate
but it failed with the error saying "The operation cannot be performed on database "dbname" because it is involved in a database mirroring session or an availability group. Some operations are not allowed on a database that is participating in a database mirroring session or in an availability group. ALTER DATABASE statement failed."
2) Primary database is multi_user but still tried following command on primary replia database(thinking it will replicate)
alter database <DBNAME> set multi_user
but no luck. The secondary alwaysON database shows (synchronizing) as the alwaysON is set in async mode but the command doesn't replicate across secondary
so we are left with the only option to re-setup alwaysON but I want to avoid it as database size is huge..
any other options or am I missing anything?
MCP,MCDBA(SQL 2000),MCTS(SQL 2005),MCITP(SQL 2005)
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Sep 3, 2015
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Mar 26, 2015
We have two server configured in always on mode .
windows is sql server 2012 64 bit edition and sql server is 2012 64 bit edition.
RAM installed on both server is around 65 gb of which 49 gb is max server memory allocated for sql services on both servers.
database related to reporting services are also in always on group .
We have also configured for reporting services and both are running on their respecting server.
Issue is on primary server reporting service is using almost 7 gb while on secondary it is using 10 gb even when there are 5 reports and its used within offices .
what issue and how to check why ssrs is using high memory..
any query , perfmon counters
reports are randomly used at client side
i have checked memory utilization through task manger..
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Aug 17, 2015
issue where SSRS reports being executed from a report library in SharePoint intermittently are reloaded after hitting the apply button to run. Â We are using SSRS 2010 and SharePoint 2013 in integrated mode. So a user clicks on the report, fills in the parameters and hits apply. Maybe 70% of the time the report runs fine. Â The other 30% the report just reloads and wipes out any parameter selections. We do have a load balancer in front of the web servers.
I've ran fiddler to capture some of the error logging.
HTTP/1.1 401 Unauthorized
Cache-Control: private
Content-Length: 16
Content-Type: text/plain; charset=utf-8
SPRequestGuid: 3101219d-876e-60c8-a883-dcdee38b81b5
request-id: 3101219d-876e-60c8-a883-dcdee38b81b5
[code]....
Things we have tried. Multiple versions of IE 8,9,10,11, Firefox, Chrome. Â All browsers seem to exhibit the behavior.
We ran so more traffic monitoring and it doesn't appear on these refreshes that report actually connects to the data context so it seems to be failing prior to that. (Possibly at the SharePoint server. Logging from the server apparently didn't show much in terms of when this occurred) It doesn't seem to matter if the report has 1 or 10 parameters.Â
We did notice that when we took the load balancer out of the equation and just hit the web server directly, the refreshes "appeared" to decrease in regularity but still occur.Also, the reports do not exhibit the refresh issue when running locally within Visual Studio 2013.
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Sep 28, 2000
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glevi
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Jan 2, 2004
I am a VoIP phone system using SQL on the back end. I am trying to get a Trigger to fire and email me when a certain number has been dialed.
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IF @@ROWCOUNT=0 RETURN ---NO rows affected exit proc
IF (SELECT finalcalledpartynumber FROM inserted)='95593684' BEGIN
--RAISERROR ('Call Stored Procedure Here',16,10)
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END
Return
GO
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Thanks
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Jul 15, 2007
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2 (
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Cheers
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