skaaks
06/14/2024, 1:18 AMMarvin
06/14/2024, 1:18 AMsqlalchemy.exc.OperationalError: attempt to write a readonly database
, indicates that the database file you are trying to write to is in the read-only mode. This can often happen if the file permissions are set incorrectly or if the filesystem itself is mounted as read-only.
Here’s a step-by-step approach to resolving this:
1. Check File Permissions: Ensure that the SQLite database file has the correct write permissions.
sh
chmod 664 path/to/your/database.db
2. Verify Filesystem Mount Options: Make sure the filesystem where your SQLite database resides is not mounted as read-only.
3. Database Path: If you are using a relative path, try using an absolute path to your database file.
4. Execution Context: Ensure that the process has the right permissions. If you are running this in a Docker container, ensure that the container has write permissions to the database file.
Here’s an example on how you might use Prefect's `SqlAlchemyConnector`:
python
from prefect_sqlalchemy import SqlAlchemyConnector
with SqlAlchemyConnector.load("MY_BLOCK") as database:
database.execute("CREATE TABLE IF NOT EXISTS customers (name varchar, address varchar);")
database.execute(
"INSERT INTO customers (name, address) VALUES (:name, :address);",
parameters={"name": "Marvin", "address": "Highway 42"},
)
For more details, you can refer to the specific documentation:
- Prefect SQLAlchemy Integration
- Prefect Snowflake Integration
If the issue persists, it might be helpful to check with the broader community or open an issue on the GitHub repository.
However, no related issues were found in the Prefect GitHub repo suggesting that this might not be a known/common issue specific to Prefect.
Good luck. Not that it matters.