I am trying to debug a program using Entity Framework code first on my personal (work) computer.
We have recently had a domain migration, meaning that the user I log in as now is not the same that I used before. This caused me to loose access to the databases I had on the computer. To get around this, I have uninstalled everything to do with Microsoft SQL Server on the computer, and installed the latest version of Microsoft SQL Server, 2014 - 12.0.4213.0 . I then restored the database I need.
When I first tried to run the program, Visual Studio complained that the project is set up to use SQL Server Express, which was not installed. The recommended solution is to change the project to use SQL Server instead. To do this, I must click on "the database file" and follow the instructions. I have looked through the entire solution. There is a great many files, but I found no good candidate for "the database file."
It seems that my Google fu is not strong enough to find anything about this. So my question is: how do I change the project to use SQL Server?
I also have a second, related question. I tried to solve the problem by installing SQL Server Express. However, when I try to restore the database to this, no base appears in the drop down list. When I try to run the program now, I get another error:
Unable to create the file 'c:\Program Files\Microsoft SQL Server\MSSQL11.SQLEXPRESS\MSSQL\DATA\Timelønsblanket.mdf' because it already exists.
I guess that this is also why I cannot restore the database. What I have found in websearches warns that I should not manually delete .mdf files.
Any advice on what to do?
I have solved the problem. All that was needed was a correct connection string. No need to find a "database file".
Related
Can someone help me with this problem??. I want use "Reverse Engineering Code First" with entity framework used MySQL. I was installed odbc, connector .net etc but still I cant see this... I did everything in this topic (and I have this same problem): Can't use a MySQL connection for entity framework 6
but still doesnt work :(. I was record all steps what I do it.. (Sry for english): https://youtu.be/xqEgCsu7_eU
I've gotten it to work with MySql Connector 6.9.11. Its so darned difficult and fragile I'm not sure if it was ultimately a good idea. There are at least 10 things that can go wrong and suck up hours of time. Once you get it working be very careful to not change anything. Anyhow. Here's some of my notes:
WARNING use with MySQL server 5.6.39 or 5.7.19. Do NOT use MySQL server version 5.7.21 (it fails with reverse eng) Aurora seems ok.
Install "mysql-connector-net-6.9.11.msi". There seems to be a problem with newer MySQL Connector 6.10 ?? use older 6.9.11. MUST INSTALL VIA msi file. Having the local file is not enough.
Install "mysql-for-visualstudio-1.2.8.msi" or "mysql-for-visualstudio-1.2.7.msi" ? NOTE: 1.2.7 will never uninstall correctly. VS 2015 seems to require "MySQL for Visual Studio" for EF Poco to work, (Pro,Enterprise are different)
Must have "Entity Framework Power tools Beta 4" installed as a plugin to Visual Studio 2013. Its takes some effort to get it to install for 2015, 17 but it can be done.
https://visualstudiogallery.msdn.microsoft.com/72a60b14-1581-4b9b-89f2-846072eff19d
Things that can go wrong:
ISSUE 1:
you get error "One or more errors occurred while processing template 'Entity.tt'."
This ALWAYS happens the first time i use reverse engineer after restarting VS.
Simply changing the .NET assemmbly version seems to do the trick. Target .NET 4.5 (not 4.5.1) for reverse engineer.
use .net4.5 for EF. If you see exception "System.ArgumentException: Empty path name is not legal."
remember to change back to 4.5.2 or greater.
VS2015 Edit and Continue is supported for 64-bit projects that target the .NET Framework 4.5.1. (or 4.5.2)
ISSUE 2:
System.ArgumentException: The specified store provider 'MySql.Data.MySqlClient' cannot be found in the configuration, or 'MySql.Data.MySqlClient' is not valid.
This appears to be an app/web.config issue.
??? MySql.Data.MySqlClient has more than 1 entry in in app.config ?? or bindingRedirect is wrong ?? might be wrong version consistently 6.9.11 ? MySql.Data.MySqlClient
?? Install correct version 6.9.11 in GAC not just nuget ? mysql-connector-net-6.9.11.msi
ISSUE 3:
MySQL issue - "error 6003: The value for column 'IsPrimaryKey' in table 'TableDetails' is DBNull." Specified cast is not valid.
[1 Jan 2016 15:27] "Noman Khan. Run the following command on the MySQL DB and then try if this works. set global optimizer_switch='derived_merge=off'" (on the user you will use. i.e root)
ISSUE 4:
Out of memory execption. Restart VisualStudio.
ISSUE 5:
If "MySQL" option doesnt display in the "Change Data source" listbox. Install the Visual Studio MySQL Plugin
Can't use a MySQL connection for entity framework 6
NOTE:
EntityFrameworkPowerToolsBeta4 is not built for VS2015 or 17. The installer version must be modified for it to install
How to use Entity Framework Power Tools in Visual Studio 2015?
http://thedatafarm.com/data-access/installing-ef-power-tools-into-vs2015/
NOTE:
You can view the Generated SQL query by debugging/break on the object prior to deferred execution of the query.
You can Use Aliases to map to other db's
Watch out for poor pluralization rules like "Statu" to "Status"
Check out https://us.visualstudiogallery.msdn.microsoft.com/ee4fcff9-0c4c-4179-afd9-7a2fb90f5838/view/Discussions
This seems to be more configurable and better supported. But only works for MSSQL?
As the title says, I want to connect PostgreSQL (I'm using the 9.6 x86 version) to HammerDB, an open source database load testing and benchmarking tool (I'm interested in the TPC-C Benchmark).
The thing is that I can do this connection by using MS SQL Server (2014), because it is relatively easy. However, I'm not used to use PostgreSQL. When I try to create Virtual Users on HammerDB (that's the 1st step to do, then you should be able to perform the transactions) I get the following error:
Error in Virtual User 1: Failed to load Pgtcl - Postgres Library Error
I did some research about this, and I found that, and I quote "PostgreSQL is VERY particular about the libraries in its PATH - they have to be the right ones and ONLY the right ones any other configuration will cause errors".
The problem is that HammerDB couldn't load library libpgtcl.dll. There they mention that to fix the problem, one should check that the PostgreSQL bin directory has been added to the path during install, but at this point I'm totally lost and I don't know what to do. I simply can´t get what they mean and how to do it.
I hope at least one of you could help me. I would appreciate it a lot.
Sorry in advance for my mistakes in English, I'm a Spanish speaker.
Well, I have solved the problem, and it is very simple.
Everything is about Setting Windows PATH for PostgreSQL, and I found that here.
Open my Computer ==>
right click inside my computer and select properties ==>
Click on Advanced System Settings ==>
Environment Variables ==>
from the System Variables box select "PATH" ==>
Edit... ==>
Then add this at the end of whatever you find their
;C:\PostgreSQL\9.2\bin; C:\PostgreSQL\9.2\lib
after that continue to click OK
That's all. So this is what you should do if you are having trouble when trying to connect PostgreSQL to HammerDB, and in general, when trying to use PostgreSQL tools.
We are in process of upgrading Sitecore 6.6 to 7.2. Part of upgrade is to migrate all the media items from 6.6 to 7.2.
I tried creating a package but the package size is too large and times out on package installation.
I found link below using Powershell Console where it shows copy-item command:
http://blog.najmanowicz.com/2011/11/18/sample-scripts-for-sitecore-powershell-console
I attached the 6.6 to 7.2 version where I can access the 6.6 DB. However copy-item doesn't seem to support different databases.
Could someone please help how I can use SiteCore Powershell or similar to migrate media items from 6.6 to 7.2?
I had a similar issue with a (very large) media library with a similar migration. Packages seems to bomb out around the 2GB mark, instead serialize the items:
Delete everything from /Data/Serialization
Open the media library. Makes sure you have the Developer tab
showing (right click somewhere on the toolbar and enable it
otherwise)
Select your root media item then Serialize Tree
Wait...
Copy the serialized files from /Data/Serialization to your new
server
From the toolbar select Update or Revert Tree depending on your requirements
Profit.
You can find more info in the Sitecore Serialization Guide and this post by Brian Pedersen
You should be able to do this in Powershell too (from my understanding). You need to:
Add the database to your connectionString.config
Add that database to your web.config to <sitecore><databases><database>. You can copy the existing master node and rename the id attribute to match your conneciton name
Your legacy database should now be connected to Sitecore interface, you can check it is present in the database selector list from the right of the desktop
The powershell command now needs a "from" and "to" location. Assume your database is called "legacy_master", the following should work:
copy-item "master:\media library\*" "legacy_master:\media library\"
I've found Hedgehog TDS (and sometimes Razl) quite useful for doing this.
Create a new TDS project (don't version control it), and download all the items you need to your local machine. You can for example connect the "Debug" build to your source 6.6 instance, and a "Release" build to your target 7.2 instance. Then you can just synchronize the items to your target machine. It's sometimes good to synchronize one or a few branches at a time if you have long latency connections.
The good thing about this is that you're in total control of your content and can see what fields are updated etc. During an update process, it's sometimes useful to compare other parts of the db as well, just to ensure you don't miss any changes you've made to the platform.
Since I mentioned Razl as well: I've found Razl quite good if you have a whole branch that you know should be transferred from one db to another (such as the case you describe). TDS is a bit slower, but more universal - and you may have a TDS license already so it may not be worth an additional Razl license.
I've just added item transfer from one DB to another so you can Copy-item between databases starting with Sitecore PowerShell Extensions 3.0. Thanks for the great idea!
Just to add another option you can perform tasks like this using Revolver.
WARNING: Try this in a test environment first
if we assume that:
the context item is the media library item
the current database is master
the target database is called master72
then something like this should work:
cp -r -n master72/sitecore/
I've followed the instructions over at http://msdn.microsoft.com/en-us/library/dd193258(v=vs.100).aspx
I've copied the deploy folder and the other dll's over to the remote machine and installed SQL Server 2008 Management Objects. However, when I attempt to run my command (real credentials stripped)
vsdbcmd /a:Import /cs:"Data Source=mydb;Integrated Security=false;Pooling=False;Initial Catalog=dbname;User ID=sa;Password=password;" /model:today.dbschema
I always get the error
The extension type Microsoft.Data.Schema.Sql.Sql100DatabaseSchemaProvider could not be instantiated.
I've searched around, but don't see anything that points to this. Any help please?
I found the issue - the server had .NET 4.0 Client Profile installed. Once I installed the full runtime, this issue went away.
It looks like CodeFirst stops doing its homework when it doesn't have full control of the database (I suppose).
The scenario is a web site hosted on Arvixe.com (or I suppose any other shared hosting server), where I have to create databases only from their control panel (and NOT with Sql Server Management Studio, just to say...).
Once created an empty database, I register a connection in the web site, and I use it to generate database from poco objects like in:
add-migration m1 -targetdatabase myconnection
This generates correctly my FIRST migration, that I can apply without problems with
update-database -targetdatabase myconnection
The first concern, not too important, is that since the database is existing, it will NOT issue the Seed command, so I have to insert my first records by hand, but this is not a great problem.
Then I change my poco objects, and I need to update the database, but when I issue ANOTHER
add-migration m2 -targetdatabase myconnection
it gives the error:
System.Data.Entity.Migrations.MigrationsPendingException: Unable to generate an explicit migration because the following explicit migrations are pending: [201111081426466_m1]. Apply the pending explicit migrations before attempting to generate a new explicit migration.
This is really strange, since if I look at the database, I can see even the table __MigrationHistory, but then it looks like it cannot recognize it...
Anyone with the same problem, or some good tip to where investigate?
Thanks in advance,
Andrea Bioli
I had this problem. I was able to resolve it by providing a connectionString and a connectionProviderName parameter to both the Update-Database and the Add-Migration commands.
If you have many projects in your solution with multiple config files, Package Manager seems to be confused. In my case, I had one project selected as the default project for Package Manager Console, but it was pulling the connection string from the Visual Studio solution default start-up project instead.