FAQs
This section gives information about some FAQs regarding Spanner migration tool.
Table of contents
How to start the Spanner Migration Tool UI ?
To bring up the Spanner Migration Tool UI, please follow the steps mentioned here.
Can Spanner Migration Tool be used without connecting to the spanner instance?
No, the Spanner Migration Tool cannot be used for schema assessment and modification without connecting to a Spanner instance. Support for default values and check constraints has been added, and this feature requires validation of DML, which means the Spanner instance must be up and running.
When is a table interleavable?
A table is interleavable into a parent table if it has a foreign key referencing the parent table and the primary key is a superset of the primary key of the parent table.
What to do in case you are unable to connect to a spanner instance?
If you are connecting from a GCE VM please verify the access scope of your GCE VM. It should be set to Allow full access to all Cloud APIs to allow connections to Cloud API. In case it is set to default access, please modify the access level by following the steps below and try again -
- Stop the VM
- Edit the VM configuration and change the access scope to Allow full access to all Cloud APIs.
- Restart the VM
Otherwise, execute the following command: gcloud auth application-default login