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

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SQL Server Sharding strategy optimization

I have implemented a sharding solution for our SQL Server databases as per the MSDN documentation here: https://msdn.microsoft.com/en-gb/library/dn589797.aspx This has been running for around 6 ...
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273 views

Performance inner join vs left join involving parallelism

I have a query which takes about 8 hours to finish. Simplified, the query looks something like this: SELECT [Some attributes, inconsequential] FROM RBM.Financial_Events RFE INNER JOIN ...
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Large Variation in Bulk Insert time

So I have a simple Bulk Insert process to take data from our staging table and move it into our datamart. The process is a simple data flow task with default settings for "Rows per batch" and the ...
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Take action from extended event?

I've seen it mentioned a few times that you can configure an event session to take an action when an event fires. Does anyone have any information on how to do this? I know that you can use the ...
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132 views

Migrating VLDB to AlwaysON AG

I have been using AlwaysON AG for a long time now and currently have about 10TB of data across 120 databases and 3 AG groups for any application that is on SQL 2012 with great success. Each AG group ...
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338 views

SQL Server 2012 Error when creating Selective XML Index on XML Query Plan

I'm trying to create a database solution that will enable me to optimise high CPU/IO/Duration queries to improve overall performance of the database. Part of the optimisation requires persisting ...
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211 views

ENABLE_BROKER vs NORECOVERY

I have two nodes with MSSQL2012 which work with AlwaysOn High Availability After some crash I had to remove db from availability group on the one of the nodes. For restoration I've made backup ...
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66 views

SQL Server 2012; Incorrect PLE buffer manager value for NUMA server

We are receiving PLE alerts from SCOM for several instances. These instances are on hardware servers, and use NUMA nodes. SQL Server 2012 SP1 CU7 Enterprise Edition is installed. Memory is fixed and ...
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49 views

Import from dbf - collation

I select data from dbf files through OPENROWSET Visual FoxPro OLEDB. Despite forcing collation on columns (e.g. SELECT name COLLATE Polish_CI_AS FROM Employees) the polish specific characters keep ...
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42 views

How to deal with Users Needing to Enter Mixed Data Types in MS SQL Server

I have a form in a C# application that I can't change with a data table bound to a query. The user enters a mark for a student's task or 'A' for absent. However, the person who designed this had the ...
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74 views

Unable To Log In Through Windows Authentication

See this question for details of troubleshooting I've been stepping through (I did answer 2, which didn't work - it was a corrupt master file). In configuration manager, I changed to a Built-in ...
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88 views

Rebuild index online without risk to other requests

We have a SQL Server 2012 Enterprise Edition database whose indices fragment very quickly. We use a maintenance plan that reorganizes those indexes daily, and rebuilds them weekly. The rebuild ...
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280 views

SSMS Client Error: Internal connection fatal error

I am running SSMS 11.0.5646.0 on a Windows 7.0 Pro desktop connected by UTP directly to same network switch as my development server (Windows 2008R2 Standard, SQL 2008R2 SE with SP3). All within the ...
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111 views

DBCC TempDB Space Usage

We are using DBCC CHECKDB on a VLDB 1TB in size. Previously when on our 2008 platform the check ran successfully on a drive that was 150GB in size for TempDB, but since moving to SQL 2012 and ...
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48 views

Compress backup taken from two different environments take different time to restore

I have two backup files one from Normal SQL Server and one from SQL Server from Azure VM. The restore of these backup files is totally different from each other. Though the database backups are ...
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94 views

Trigger/Event that fires when a Transaction finishes

I have a query that pulls from about 15 different tables. I am looking to materialize this into a table that stores it in xml/json. (To improve performance.) The problem I have is that these tables ...
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131 views

Index Optimization Error in SQL Server 2012

I have an Index optimization job set on the database SWHSJ having two data files with unrestricted growth in the J drive with 174GB free, as you can see below: ...
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377 views

Upgrading SQL Server from 2008 to 2012 doesn't respect existing install / instance paths

Basic Information : Running Microsoft Windows Server 2008 with MS SQL Server 2008 (version 10.0.5869), trying to upgrade to SQL Server 2012. Currently working in a cloned VM of our production server ...
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147 views

SQL Server 2012 Installation Has No Option To Uninstall

I've recently inherited a laptop for testing from a client, unfortunately it wasn't a fresh image so it has some software already installed that's causing me some grief. The short version is their IT ...
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1k views

SQL Replication With Always On Availability Group

We have an always-on SQL 2012 availability group with two replica servers and an AG listener. Doing merge replication via anonymous subscriptions through IIS between SQL and multiple remote clients ...
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235 views

AlwaysOn FCI + HA Setup Question

I am planning to create FCI + HA solution in the same datacenter, but running into some problems. I'd really appreciate if someone can provide some guidance. Here is the current configuration (All ...
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2k views

MS SQL Server 2012 Failover Cluster connection issue

I was about to give up with this but I'll give it a go here if anyone can help. I've set up a fail-over cluster SQL Server with 2 SQL nodes, Domain controller and file witness. All seems to work ...
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2k views

SQL Server intermittent error 40 Could not open a connection to SQL Server or The network path was not found

I am getting intermittent errors as per the below stack trace. I am using C# Entity Framework with SQL Server 2012 enterprise running on a separate server computer. I can connect and query the DB ...
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Once more about SQL Server virtual accounts

Let me reboot my question on SQL Server virtual accounts permissions The (same) MSDN article on the same version 2012 of SQL Server "Configure Windows Service Accounts and Permissions" states: ...
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SQL Server 2012 Resource Governor and memory used by CLR

In SQL 2012 memory used by CLR is now part of what is controlled by "MAX Server Memory" a) Does Resource Governor in SQL 2012 Enterprise (MAX_MEMORY_PERCENT for resource pool) governs CLR memory? ...
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215 views

custom population of full text index

Is there any way to populate a full text search index without storing the backing information in the database? I don't mean using remote-blob-storage or FILESTREAM types. The backing information is a ...
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612 views

SqlDependency permissions

The db is SQL Server 2012. All data tables are in the dbo schema. All data access is done via stored procedures in a different schema (user rt). I want to add query notifications for some tables, so I ...
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486 views

Uninitialized Merge replication subscription

I have 3 separate SQL Server 2012 databases running on 3 VM's. I have successfully configured one pull subscription to the distributor but when I add a 2nd subscription on another SQL Server the ...
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SQL Server fulltext_semantic_languages

When trying to install a semantic search example, I'm running into a problem. There are some steps in the example to check if the 'new' Semantic Search and Full Text Search are installed. ...
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885 views

Event Notification / Service Broker - no inserts anymore, “previously existing connection with the same peer”

I've been working on getting several servers to feed Event Notifications to a central server. Had everything working yesterday, then managed to break it. Dropping and recreating the ...
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35 views

Multiple transaction logs and preferred order of use

Here's my situation: I have a SQL Server 2012 installation with a relatively small (185GB) SSD volume, and a large (3TB) RAID10 spinning disk volume. I currently have tempdb data and log files on ...
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Does Trace Flag 8295 applies to SQL Server 2012?

I've been searching about the undocumented Trace Flag 8295. It's been introduced with KB 2476322 in SQL Server 2008 and "'Creates a secondary index on the identifying columns on the change tracking ...
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46 views

where to add a column with low cardinality, decimal type into an index?

I got a question regarding the best way to put a bad column for an index in an index, so that I can satisfy my query below, and similar others that follow the same pattern. on the query below, all ...
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25 views

Does Disabling Page Level Locking Have an Adverse Effect on Other DBs

I got the following from a vendor about what their software (“IM”) needs: “IM needs its own SQL Server Instance if the DB is installed on a shared SQL server. This is a mandatory prerequisite because ...
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69 views

What is the correct way to rename/swap a table in production

I have two tables, tblCode and tblCodeAlternative tblCode has about 4100 rows and is used in production. tblCodeAlternative has about 4200 rows and is in the production database but not used ...
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Installing SQL Server 2012 Standard on a machine with more than 64GB RAM

I’m in the process of doing the specification for a new server that will host SQL Server 2012 including SSIS, SSRS and SSAS I’m aware SQL Server 2012 Standard has a limit of 64GB. However from what ...
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60 views

SQL Server 2012 duplicate key error with Spatial index that shouldn't be unique

We have a table that has a geometry column that is filled by a stored procedure from two x and y values whenever they're changed ( SW_GEOMETRY = GEOMETRY::STGeomFromText('POINT('+ ...
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74 views

PAGEIOLATCH_SH and WRITELOG waits

We have a slow overnight process which I was asked to look at with the top waits being PAGEIOLATCH_SH and WRITELOG I have been collecting information from sys.dm_io_virtual_file_stats and can see ...
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78 views

Techniques for moving database from Enterprise to Standard Editiion

I have a SQL Server 2012 Enterprise edition and a Model database. On a virtual machine I have installed SQL Server 2012 Standard Edition and want to create a copy of the Model database on it. I have ...
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69 views

SQL Server 2012 replication setup on routed network

I'm trying to setup replication between two SQL Server 2012 instances. I set up a publication successfully on server1, but then I had a problem when trying to access it from server2, because the only ...
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139 views

SSRS - ERROR NUMBER:7357 while passing multiple value parameters using comma delimited string to stored procedure

I am working on a SSRS report to display the logins permissions in a set of databases on a specific server. the server, the logins and the databases are all parameters. NULL shows them all (logins ...
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MEMORYCLERK_SQLOPTIMIZER in SQL 2012 Memory usage extremely high and causes server to crash

I have been having issues with our SQL server for a while now. It seems to run out of memory every few days and when I look at the memory dump, the MEMORYCLERK_SQLOPTIMIZER seem to take over memory ...
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1k views

The Service Broker endpoint is in disabled or stopped state - AoAG - SQL Server 2012 - 15 minute interval

I receive this error message in SQL Server error log every 15 minutes. I have setup AOAG on this server. The database option "Service Broker - Broker Enabled" is turned on for the Blackberry related ...
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57 views

Replacing Database in High Availability Group Enviroment

Looking for some advice regarding replacing a database within a SQL 2012 High Availability Group environment setup as synchronous with auto failover. A little bit of background on the reason for this. ...
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Performance differs on same query against two (almost) identical tables?

I'm running these two queries in SQL Server 2012: SELECT tpua.Field1, CAST(round(twg.Field2 * 2, 0) / 2 As Decimal(8,1)) As Field2, CAST((round((twg.Field3/10.0) * 2, 0) / 2) * 10 As int) As ...
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673 views

How to raise Procedure Cache Hit Ratio?

I have a SQL Server 2012 instance with 96 GB of RAM that has the Buffer Cache Hit Ratio consistently at 100% and the PLE consistently over 500,000, so memory is obviously not a problem. However, my ...
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2k views

SQL Agent After installation not able to start

SQL Server 2012 SQL Agent will not start after installation. Checked permissions, on surface configurations, all OK, have tried to run it as another account no Joy. The error i am receiving is the ...
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544 views

Identifying if spid on SQL Server is in rollback after low disk space

On a test box I wanted to get an idea of how long adding an identity field would take to a table with roughly a half billion rows. The process ran for about 10 hours and we noticed it was getting ...
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474 views

Sql Server 2012 Disk I/O Too high

I am running SQL Server 2012 on windows azure VM Windows server 2012. This is a live Database, about 250GB, with high usage. I applied some best practice articles for the temp-db long ago, and also ...
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120 views

Change Data Capture not running when Mirror is Suspended

We have 2 SQL 2012 SP2 Enterprise servers that have some mirrored databases. One of these databases also has CDC enabled on a number of tables so that we can run some business logic when there are ...