“Could not backup database: The backup of full-text catalog ‘index_name’ is not permitted because it is not online. Check errorlog file for the reason that full-text catalog became offline and bring it online. Or BACKUP can be performed by using the FILEGROUP or FILE clauses to restrict the selection to include only online data.”
If the Full-text Catalog in the database you are trying to backup is not Online, then you may encounter this error when trying to get backup.
Run the following code to determine which table is using the Full-Text Index:
SELECT name, ftcatid FROM sysobjects WHERE ftcatid > 0
After running this command, tables that use Full-Text will be listed.
Remove the full-text index metadata for the related table with the below script.
EXEC sp_fulltext_table 'table_name', 'drop'
You can now remove the Full-Text Catalog with the following code:
DROP FULLTEXT CATALOG fulltext_catalog_name