migration

问题 I will be moving our production SQL2005 application to SQL2008 soon. Any things to lookout for before/after the move? Any warnings, advices? Thank you! 回答1: Change your compatibility level on the database after moving it to the 2008 server. By default, it will still stay at the old compatibility level. This will let you use the new goodies in SQL 2008 for that database. If you're using the Enterprise Edition of SQL 2008 and you're not running at 80-90% CPU on the box, turn on data compression

问题 I am developing web systems using Django and they are deployed on Heroku. After the system goes production, all database data and the migration files (i.e., the 00*_* files) have to be retained. The followings are my procedure to perform database migration and deployment: For the first deployment, perform manage.py makemigrations locally and push to Heroku. Perform manage.py migrate on Heroku. If models are changed later: Perform makemigrations locally and push to Heroku. Perform migrate on

问题 I have an Oracle 8i database running on 2000 NT server. I have been assigned a task to copy data along with schema into any of these (postgresql, mysql, ms access) I have tried a lot in the internet but there is no such tool which could help me. Right now I am running that NT 2000 in virtual machine using VM WARE. 回答1: It is not too difficult to link Oracle to MS Access, from which point it is just a matter of running queries, if you need the data to be physically held in MS Access. More info

问题 I'm trying to perform a core data migration and everything is working fine, except that the migration itself takes over 10 seconds. I'm using an xcmappingmodel to map between my two model versions which works fine, except for the length of time it takes. In the code below, there's a 10 second (or longer!) pause between the "Beginning migration" and "Finished migration" logs. Has anyone encountered such a slow migration before? I know that all of the data is replicated and transferred to the

问题 Assume we have a domain class public class Incident { [Key] public virtual int IncidentId { get; set; } [Display(Name = "Parent Incident")] public virtual Incident ParentIncident { get; set; } [Display(Name = "Related Claim")] public virtual Incident ClaimIncident { get; set; } } Other properties are omitted for simplicity. When I had just ParentIncident in place, everything worked fine. Now I have added ClaimIncident to the class. I am attempting to update my database using the Entity

问题 I'm migrating my project from WebSphere 7 to WebSphere 8 and I'm using JSF 1.2. I was facing a problem with IBM JSF/html_extended tags and also standard converters, which are mainly JSF 1.2 core components. I'm also updating my Java EE version from 5 to 6 (which might not be the reason). Finally, there is also a component tree given. Below is my stack trace: javax.faces.component.UpdateModelException: org.apache.jasper.el.JspELException: /sc40/NewContract.jsp(130,5) '#{pc_NewContract

问题 I am migrating data from one server to another and I am using curl to do so. I have been successful so far, but there are some large entities that are not migrating! I have tried serialize but even that is not working, no error is shown! The php has all settings configured to maximum. $ch = curl_init(); curl_setopt ($ch, CURLOPT_URL, $url); curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, FALSE); curl_setopt ($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.6) Gecko

问题 I've added a value to a realm object (I've added dynamic var inspectorName = "" to the WeekReport object), and I'm trying to migrate the realm database to contain that value. I'm trying to call the migration block in func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey : Any]? = nil) like this: func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?)

问题 After using SQLite for development and beta-testing for a home-project I want to migrate the DB to Microsoft SQL Server to get better performance. Is there any free/cheap utils that will do this? So far I have found DBConvert that looks like a good product, are there others? 回答1: There are a few choices here: http://www.sqlite.org/cvstrac/wiki?p=ConverterTools 来源： https://stackoverflow.com/questions/2361678/migrate-sqlite-database-to-microsoft-sql-server

问题 I'm trying to define a method inside a migration, but I'm getting an undefined method error: undefined method 'do_something_specific' for #<ActiveRecord::ConnectionAdapters::SQLite3Adapter:0x4868018> I'd rather not define it elsewhere, because it doesn't really relate to the rest of the application, just this specific migration. To be clear, my migration looks something like: class DoSomethingSpectacular < ActiveRecord::Migration def self.up do_something_specific(1, 2) end def self.down end