
Trusted by enterprises at scale
US state environmental agency
Patching 30 min to under 1 min
Fortune 250 transportation company
10x faster lifecycle operations
Fortune 500 insurance company
85% of day-to-day operations automated
Patching, upgrades, and resizes run as scheduled, automated, sequenced operations across every engine and every cloud. Here is what that looks like in practice.

For HA databases, Tessell patches with a Standby-First approach and rollover. The standby is patched first while the primary keeps serving traffic, a controlled switchover moves traffic to the patched node, then the original primary is patched. Downtime is limited to the switchover itself, and an optional second switchover restores the original primary and standby roles. A pre-patch snapshot is prompted before the operation begins.

Each database has a maintenance window you set by day, time, and duration. OS patches, engine version upgrades, parameter profile updates, compute and storage resizes, and switchovers queue to run inside it, not the moment they are requested. Every activity shows its status and whether it causes downtime, and you can reschedule it, start it now, or cancel it before it runs.

New Oracle PSUs are available on the platform within two weeks of Oracle's release, so your estate stays current without manual tracking. One-off patches are supported when you need a specific fix, and minor version upgrades can apply automatically inside the maintenance window you already set. PostgreSQL and MySQL minor upgrades are backward-compatible and applied through the same rolling approach.
Consistent governance is one part of a larger architecture. Tessell's Governance and Control brings all three together.
Your data runs inside your own cloud account, under your keys, on your network so governance and sovereignty work together rather than as separate decisions.
Explore Security and CompliancePer-database cost attribution across compute, storage, licensing, and backup so the estate you've governed is also the estate you can fully optimize.
Explore Cost VisibilityWalk through the maintenance window, the Standby-First patch flow, and estate-wide scheduling with a Tessell engineer, using your engines, your cloud, and your change-management requirements