What causes the "Invalid object name 'umbracoDomains'."
In order to allow multiple Umbraco sites to co-exist in a single
database, a new DB schema is created using the name of the
installing user. All tables are then created under this
schema (eg. <SchemaName>.<TableName>).
If a user other than the creator of the Umbraco installation is
then used to access the Umbraco database, Umbraco will throw an
"Invalid object name 'umbracoDomains'." error when trying to access
the Umbraco DB.
How to resolve the "Invalid object name 'umbracoDomains'."
If only one Umbraco instance exists in the
Umbraco database, the "Invalid object name
'umbracoDomains'" error can be resolved by setting the
Schema of each table to 'dbo'.
This can be achieved by using the following SQL command against
the restored Umbraco database:
'ALTER SCHEMA dbo TRANSFER ?'
Be careful as this will iterate through all
tables in the target Umbraco database, so can cause
problems if used for anything other than one instance of Umbraco.
Even if running on an Umbraco database with only one Umbraco
instance, it is always a good idea to backup your DB prior to
running such commands.
Prior to altering the schema, the tables will look as
Once the SQL command is applies to the Umbraco DB, the tables
will look as follows: