OnCall 24×7 ~ Emergency Response.

Monitoring system installation, configuration & review. Response time SLA for alerts and events generated from monitoring system

Proactive task execution to avoid incidents;  i.e. disk space management, log management, long SQL query completion timing

Incremental performance tuning to keep performance at steady state ( SQL tuning) 

Backup strategy and recovery SLA 

Dev/Test/QA refreshes of database ( depends on complexity) 

Database Patching Runbook activities 

Database Migrations