Seaquel
SQL Server error code

SQL Server error 6533

SQL Server raises error 6533 at severity 16, which marks a problem with the query or data that you can correct.

AppDomain %.*ls was unloaded by escalation policy to ensure the consistency of your application. Out of memory happened while accessing a critical resource. %.*ls
Msg6533
Severity16
Group6000–6999

Source: Database Engine events and errors