To start, I'd recommend setting up default alerts for:

- Error Number 823 - IO/Hardware/System Issue detected

- Error Number 824 - IO/Logical Consistency Check Failed

- Error Number 825 - Read/Retry Warning

- Severity 016 - Miscellaneous User Error

- Severity 017 - Insufficient Resources

- Severity 018 - Nonfatal Internal Error

- Severity 019 - Fatal Error in Resource

- Severity 020 - Fatal Error in Current Process

- Severity 021 - Fatal Error in Database Process

- Severity 022 - Fatal Error: Table Integrity Suspected

- Severity 023 - Fatal Error: Database Integrity Suspected

- Severity 024 - Fatal Hardware Error Raised

- Severity 025 - Fatal Error