When I tried, migrating v7 to v8 (Content migration), getting this error :-
Error during installation
The database failed to upgrade. ERROR: The database configuration failed with the following message: Cannot alter column of type NTEXT or IMAGE [ Column Name = textValue ] Please check log file for additional information (can be found in '/App_Data/Logs/')
See the log for full details (logs can typically be found in the App_Data\Logs folder).
Hi Yuvraj, did you get anywhere with this in the end? I've recently got the exact same error and after checking the database cannot see any columns with the types specified in the error
If you could not follow the first step then you follow Second Solution here -
Step 1: Migrate to version 8.5 as a first step and then post-migration, carry out a normal Umbraco upgrade to the latest version of Umbraco 8.
Step 2: Install the following community Nuget Package: ProWorks Umbraco 8 Migrations into your V8 project before running the migration (no configuration required). This package was created by Umbraco Gold Partner ProWorks and patches the migration process so you can migrate directly from the latest Umbraco 7 to V8.6+ without encountering the above issue (and other issues too #h5yr). Learn more about the package and the migration process on Prowork's blog.
Content migration error
When I tried, migrating v7 to v8 (Content migration), getting this error :-
Error during installation The database failed to upgrade. ERROR: The database configuration failed with the following message: Cannot alter column of type NTEXT or IMAGE [ Column Name = textValue ] Please check log file for additional information (can be found in '/App_Data/Logs/')
See the log for full details (logs can typically be found in the App_Data\Logs folder).
Hi Yuvraj, did you get anywhere with this in the end? I've recently got the exact same error and after checking the database cannot see any columns with the types specified in the error
Hello Sam, I found two solutions.
First Solution here -
Step 1: Before content migration, you need to install pre-migration-health-checks in V7. Package link here -
https://our.umbraco.com/packages/developer-tools/pre-migration-health-checks/
Step 2: After installation, Got to Developer Section & here you see "Health Check" Tab. See below screen shoot -
Here you choose two options "Migration" & "Data Integrity", See the below screenshot -
Step 3: Then after you click "Check group" option, See below screenshot -
Step 4: After clicking, if find any issues like the below screenshot -
Then click on the fix button and fix all issues like this then you install this package ProWorks.Umbraco8.Migrations in Umbraco V8.
Step 5: After installing this package then you can start the content migration process.
For a brief better understanding see this link - https://www.proworks.com/blog/archive/how-to-upgrade-umbraco-version-7-to-version-8
If you could not follow the first step then you follow Second Solution here -
Step 1: Migrate to version 8.5 as a first step and then post-migration, carry out a normal Umbraco upgrade to the latest version of Umbraco 8.
Step 2: Install the following community Nuget Package: ProWorks Umbraco 8 Migrations into your V8 project before running the migration (no configuration required). This package was created by Umbraco Gold Partner ProWorks and patches the migration process so you can migrate directly from the latest Umbraco 7 to V8.6+ without encountering the above issue (and other issues too #h5yr). Learn more about the package and the migration process on Prowork's blog.
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