Questions tagged [sql-server-2012]

SQL Server 2012 (major build version 11.00.xxxx). Please also tag sql-server.

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28
votes
3answers
5k views

What is a deterministic method for evaluating a sensible buffer pool size?

I'm trying to come up with a sane way to understand if the max server memory (mb) setting is appropriate (either should be lower, or higher, or stay the way it is). I am aware that max server memory (...
78
votes
5answers
25k views

Are SQL Server in-place upgrades as ill advised as they used to be?

I have been working with SQL server on and off since SQL Server 6.5, the old advice that still rings in my head was never to do an in-place upgrade. I'm currently upgrading my 2008 R2 DEV and TEST ...
17
votes
2answers
7k views

Limit connection rights on SQL Server

I have an app to deploy in production that uses 'honor system' security. That is, all users connect to the DB using a SQL user/passwd credential and the app manages permissions itself. The latter part ...
37
votes
8answers
27k views

SQL Server Agent Jobs and Availability Groups

I'm looking for best practice in dealing with scheduled SQL Server Agent jobs in SQL Server 2012 availability groups. Maybe I missed something, however at the current state I feel that SQL Server ...
22
votes
3answers
4k views

Do natural keys provide higher or lower performance in SQL Server than surrogate integer keys?

I'm a fan of surrogate keys. There is a risk my findings are confirmation biased. Many questions I've seen both here and at http://stackoverflow.com use natural keys instead of surrogate keys ...
40
votes
3answers
192k views

Restore SQL Server 2012 backup to a SQL Server 2008 database?

Is there a way to restore a SQL Server 2012 database backup to a SQL Server 2008? I tried to attach file, it does not work.
99
votes
7answers
271k views

How do I move SQL Server database files?

I have a database and want to move the .mdf and .ldf files to another location. But I do not want to stop the MSSQLSERVER service, and I do not want to export to another server. How can I do this?
44
votes
4answers
101k views

Can I install SQL Server Management Studio locally?

Can I install SQL Server Management Studio on my desktop to access a database on a SQL Server 2012 instance? If so, where can I find the installer? Google searches only return 'express' versions ...
51
votes
4answers
15k views

What are Objective Business Reasons to Prefer SQL Server 2012 over 2008 R2?

My company is facing the decision whether to purchase SQL Server 2012 Denali or SQL Server 2008 R2 for a new database server. I am looking for objective reasons to choose one over the other. Our ...
55
votes
6answers
29k views

Date range rolling sum using window functions

I need to calculate a rolling sum over a date range. To illustrate, using the AdventureWorks sample database, the following hypothetical syntax would do exactly what I need: SELECT TH.ProductID, ...
34
votes
2answers
69k views

When is it appropriate to use SQL Server Developer Edition? [closed]

Do you use SQL Server Developer Edition on server-class machines in DEV and STAGING environments? I am working on a large project where (if it passes the proof of concept stage) we will have several ...
8
votes
2answers
6k views

Kerberos authentication not working with Linked Servers in SQL Server 2012

I am setting up a DEV/TEST environment using 2 SQL Servers running SQL Server 2012 on Windows Server 2012. We are moving from SQL Server 2005 on Windows Server 2008, where we already have this up-and-...
3
votes
1answer
13k views

Why has my database connection failed?

Recently I have developed software using SQL Server 2012. Now when I try to connect, I get this error message: Cannot connect to AAFI\SQLEXPRESSA network-related or instance-specific error occurred ...
33
votes
2answers
12k views

Optimising plans with XML readers

Executing the query from here to pull the deadlock events out of the default extended events session SELECT CAST ( REPLACE ( REPLACE ( XEventData.XEvent.value ('(data/value)[...
36
votes
2answers
4k views

Why are Denali sequences supposed to perform better than identity columns?

In his answer to Which is better: identity columns or generated unique id values? mrdenny says: When SQL Denali comes out it will support sequences which will be more efficient than identity, but ...
25
votes
6answers
75k views

How to view an encrypted view or stored procedure

I am working on a third party database. When I try to view the definition of a view by right clicking, CREATE TO and then to NEW QUERY EDIT WINDOW, I am getting an error: This property may not ...
6
votes
5answers
14k views

SQL Server 2012 AlwaysOn: need to automatically add databases by script- T-sql or PowerShell

I've installed and successfully configured our SQL Server 2012 AlwaysOn 2-node servers for our new "Intranet" that is coming out. I've gotten AlwaysOn working great, and our Front End servers for the ...
17
votes
1answer
9k views

Warning in query plan “Cardinality Estimate”

create table T(ID int identity primary key) insert into T default values insert into T default values go select cast(ID as varchar(10)) as ID from T where ID = 1 The query above has a warning in ...
5
votes
1answer
464 views

join syntax / style performance consideration

We recently found on one of our stored procedures that we get significant performance improvement by changing the join syntax/style of our query from this... SELECT b.bla, c.foo, d.bar FROM dbo....
23
votes
2answers
61k views

How To Profile Stored Procedures

I am using SQL Server 2012 and was wondering how to profile stored procedures For instance can profiler capture each individual SQL statement in a stored procedure, what it is, and how long it takes ...
21
votes
2answers
28k views

Connection pools being reset with Error: 18056, Severity: 20, State: 46. & Perfmon Counters not showing

We are using SQL Authentication (to reduce the number of connection pools) & .NET 4.0 connection strings to connect to SQL Server Enterprise Edition 2012 SP1 on a Windows 2008 R2 Enterprise Server:...
21
votes
4answers
75k views

Is there a way to generate table create script in TSQL?

Is there a way to generate a create script from an existing table purely in T-SQL (that is without using SMO, since T-SQL does not have access to SMO). Let's say a stored procedure that receives a ...
13
votes
1answer
30k views

What does role db_owner allow

I have been trying to troubleshoot a login that is not able to view certain tables in a SQL Server 2012 database. In doing so I find I don't quite understand what membership in the db_owner role ...
27
votes
2answers
93k views

What is the fastest way to insert large numbers of rows?

I have a database where I load files into a staging table, from this staging table i have 1-2 joins to resolve some foreign keys and then insert this rows into the final table (which has one partition ...
9
votes
2answers
6k views

Error running Powershell Script in SQL Server Agent

I have a SQL job that runs via SQL Server Agent (Running SQL Server 2012 Enterprise). The last step of the job is to run an application located on a network share. Unfortunately I don't know the name ...
12
votes
1answer
3k views

SQL Server 2012 Page Life Expectancy resets to 0 after about 50 days

I've noticed an odd behavior on a 2-server HA cluster and I was hoping someone could confirm my suspicion, or maybe offer some other explanation... Here is my setup: A 2-server SQL 2012 SP1 ...
5
votes
1answer
13k views

How many users are supported on SQL Server 2012 Express?

I would like to say that i have gone through some of the sql blog and MSDN BOL, but still there is some confusion in mind like. The limitation of SQL Server 2012 Express is 10 GB. It is the ...
7
votes
2answers
9k views

DB Engine Stolen Server Memory is too high

I get error from System Center Operations Manager (SCOM). How to solve this error? SQL DB 2012 Engine Stolen Server Memory is too high. I run query and get this counters: ╔══════════════════════...
30
votes
3answers
6k views

At what point does one database per client become unfeasible?

For one of our systems, we have sensitive client data and store each client's data in a separate database. We have about 10-15 clients for that system. However, we're developing a new system that ...
31
votes
2answers
6k views

Why does query error with empty result set in SQL Server 2012?

When running the following queries in MS SQL Server 2012 the second query fails but not the first. Also, when run without the where clauses both queries will fail. I am at a loss why either would fail ...
23
votes
3answers
48k views

Truncated 200GB table but disk space not released

I have only 2GB left, so I need to remove this history table. This table now is empty but the database disk space not released. And the database file is 320GB.
15
votes
4answers
9k views

How can I convert a key in a SQL Server deadlock report to the value?

I have a deadlock report that tells me that there was a conflict involving waitresource="KEY: 9:72057632651542528 (543066506c7c)" and I can see this: <keylock hobtid="72057632651542528" dbid="9" ...
20
votes
3answers
3k views

Implementing subtype of a subtype in type/subtype design pattern with mutually exclusive subclasses

Introduction In order for this question to be useful for future readers I will use the generic data model to illustrate the problem I face. Our data model consists of 3 entities, which shall be ...
13
votes
1answer
23k views

Benefits of using WITH TABLOCK on an INSERT

Under some circumstances, doing an INSERT INTO <tablename> (WITH TABLOCK) will be faster due to minimal logging. Those circumstances include having the database in the BULK_LOGGED recovery model....
8
votes
1answer
37k views

I/O is frozen on Database & also I/O was resumed on Database on daily basis in log with complete Backup

I would like to say that as on daily basis i got the message in my log file. First The I/O is frozen on Database (DatabaseName) message appears in log. The message is like I/O is frozen on ...
3
votes
1answer
9k views

Create an alias for a SQL Server named instance pointing to sql default instance

I have an installation of SQL Server 2012 Std Ed on Windows 2012 R2 running in a default instance, and an app that wants to connect to it using a named instance (can't be changed) E.g. ServerName - ...
16
votes
2answers
48k views

Shrink Transaction Log While Using AlwaysOn Availability Group

We are using AlwaysOn Availability Group feature of SQL Server 2012. Regular full database backups and transaction log backups are done every day on the secondary database. I have read here doing the ...
13
votes
2answers
10k views

Unexpected gaps in IDENTITY column

I'm trying to generate unique purchase order numbers that start at 1 and increment by 1. I have a PONumber table created using this script: CREATE TABLE [dbo].[PONumbers] ( [PONumberPK] [int] ...
16
votes
3answers
44k views

Copy maintenance plans to a different server

Is there a way to copy maintenance plans from one SQL Server 2012 to another? Both servers are not accessible via the same copy of Management Studio at the same time (on different networks).
1
vote
2answers
2k views

Disaster Recovery Options for Sql Server

I wanted to see what suggestions you might have for Disaster Recovery Options based on the following criteria. Currently running SQL 2012 standard edition We have 18000 databases (same schema across ...
1
vote
3answers
2k views

Improve performance by partitioning

I'm using SQL Server 2012. I’m using CTE to create an orders table from the items table. The final count for the orders table is around 120 million. It is taking about 2 hours for the whole process. ...
16
votes
2answers
50k views

How can I tell how many Cores SQL Server is actually using?

I have two servers running SQL Server. Server 1: SQL Server 2008 R2 Express (4 core) Server 2: SQL Server 2012 Developer Edition (8 core) As far as I am aware SQL Server 2008 R2 Express should only ...
12
votes
2answers
2k views

Are the cost percentages in this SQL Server plan over 100% for a valid reason?

I'm looking through the plan cache, looking for low-hanging optimization fruit and came across this snippet: Why are many of the costs listed above 100% ? Shouldn't that be impossible?
11
votes
5answers
23k views

Freeing Unused Space SQL Server Table

I have a table in SQL Server 2012 Express with a lot of unused space. I need to free up space in the database. | NAME | ROWS | RESERVED | DATA | INDEX_SIZE | UNUSED | |----...
11
votes
6answers
17k views

Migrate from SQL Server 2000 to 2012 without a 2005 or 2008 instance

I have come across three old databases sitting on SQL Server 2000 which I need to move to 2012. I believe the standard approach is to restore into a 2005 or 2008 instance, update, re-export and ...
6
votes
1answer
1k views

Guarantee SQL Server Identity Columns that two consecutive values differ by constant increments?

I posed a question about Denali sequences here and another question about emulation of identity columns in Oracle Global Tables here. I always thought that I could trust that identity values ...
6
votes
2answers
15k views

How to minimize log operations in SQL Server to avoid “log full” error

I have a database in production which constantly get log file filled, its a data warehouse and have many jobs/queries running for obvious. Below is the error which I am getting Msg 9002, Level 17, ...
4
votes
2answers
4k views

How do I delete unique rows from a table with duplicate keys?

I have the following data: road | ID | other column | other column | ------------------+------+---------------+--------------+ MAIN ST | 1 | ... | ...
1
vote
2answers
9k views

How to add an article to existing replication

This is the first time I am going to add tables to replication. I have outlined the below steps to add a new table to existing replication. Please correct me if I am wrong. The table is just created -...
10
votes
2answers
4k views

Do schema changes “break” Availability Groups or are they handled transparently?

My organization is planning to adopt SQL Server 2012 Availability Groups and I am trying to understand what impact (if any) it will have on our application upgrade process. We release application ...