Seaquel
SQL Server error code

SQL Server error 7637

SQL Server raises error 7637 at severity 16, which marks a problem with the query or data that you can correct.

Database is not fully started up or it is not in an ONLINE state. Try the full-text DDL command again after database is started up and becomes ONLINE.
Msg7637
Severity16
Group7000–7999

Source: Database Engine events and errors