- 3,715,753 Users
- 2,242,856 Discussions
- 7,845,557 Comments
Forum Stats
Discussions
Categories
- 17 Data
- 362.2K Big Data Appliance
- 7 Data Science
- 1.6K Databases
- 467 General Database Discussions
- 3.7K Java and JavaScript in the Database
- 22 Multilingual Engine
- 487 MySQL Community Space
- 3 NoSQL Database
- 7.6K Oracle Database Express Edition (XE)
- 2.8K ORDS, SODA & JSON in the Database
- 416 SQLcl
- 42 SQL Developer Data Modeler
- 184.9K SQL & PL/SQL
- 21K SQL Developer
- 1.9K Development
- 3 Developer Projects
- 32 Programming Languages
- 135.1K Development Tools
- 9 DevOps
- 3K QA/Testing
- 250 Java
- 5 Java Learning Subscription
- 10 Database Connectivity
- 66 Java Community Process
- 1 Java 25
- 9 Java APIs
- 141.1K Java Development Tools
- 6 Java EE (Java Enterprise Edition)
- 153K Java Essentials
- 135 Java 8 Questions
- 86.2K Java Programming
- 270 Java Lambda MOOC
- 65.1K New To Java
- 1.7K Training / Learning / Certification
- 13.8K Java HotSpot Virtual Machine
- 10 Java SE
- 13.8K Java Security
- 3 Java User Groups
- 22 JavaScript - Nashorn
- 18 Programs
- 125 LiveLabs
- 30 Workshops
- 9 Software
- 3 Berkeley DB Family
- 3.5K JHeadstart
- 5.7K Other Languages
- 2.3K Chinese
- 3 Deutsche Oracle Community
- 10 Español
- 1.9K Japanese
- 2 Portuguese
EF Core, SignalR and Database Change Notifications
Is this possible? I haven't been able to find documentation on how to get this to work. We're wanting to use SignalR within our application.
Answers
-
I can't think of a way to use EF Core and DB Change Notification directly together easily. EF Core uses generic ADO.NET APIs. It can't access ODP.NET-specific APIs. DB Change Notification is specific to ODP.NET.
You could execute a query with EF Core. Then, capture the SQL executed and re-execute it with ODP.NET so that it can be registered with DB Change Notification. You don't need to actually retrieve the results in the re-execution. When a change occurs, the event handler will have EF Core query again to retrieve the new data..