Why is Entity Framework update database not working?
BUT when I change SP and run update-database again it does not work and I need to do another add-migration command to create new MYclass2. Is that right? I mean every time I should write add-migration?
How to control the updating of Records in a database?
When you are updating records in the database though, you can control which fields in the ViewModel are used to update the existing fields in the EF class. Use the Id to get the latest version of the existing object out of the database.
Is there way to not update column in SQL UPDATE statement?
The effect is that EF will not include this column in the SQL UPDATE statement. I am still (very) shocked that there are no [InsertOnly] or [UpdateOnly] attributes similar to [ReadOnly].
How to add an API controller in ASP.NET Core?
Right-click the Controllers folder. Select Add > New Scaffolded Item. Select API Controller with actions, using Entity Framework, and then select Add. In the Add API Controller with actions, using Entity Framework dialog:
Why is my Oracle database not upgrading to dbua?
If each Oracle home is not owned by the same user, then you must change to database file permissions and pass additional parameters to DBUA. If you do not do this, then during upgrade, the DBUA Prerequisite Checks page reports upgrade.xml not found errors.
What should I do if my database upgrade fails?
Use utlrp.sql to recompile invalid objects. If you fail to do this before an upgrade, then it becomes difficult to determine which objects in your system were invalid before starting the upgrade, and which objects become invalid as a result of the upgrade.
Why is Oracle database cannot startup in edition session?
Use this section to understand and resolve SP2–1540: “Oracle Database cannot startup in an Edition session.” This error may indicate that your Oracle configuration does not have sufficient number of processes available for the recompile. Use this procedure to fix ORA-01822 and ORA-16512 errors involving time zone file mismatches.