If connection to a database with a square bracket character in its name cannot be established, you can try the following steps:
- Verify that the database name contains the correct square bracket character.
- Check if the database server is running and accessible.
- Try connecting to the database using a different client or tool.
- Check your connection string and ensure that it is correctly formatted, and that the brackets are escaped properly.
- Try to rename the database with a name that does not contain square brackets.
- Check if there are any special characters in the password used for the database connection, as these may also cause connectivity issues.
- Contact the database administrator for further assistance if the issue persists.