How a financial institution caught three critical database risks pre-migration that previous tooling completely missed — preventing a go-live disaster.
A financial institution was migrating its core banking platform to a hybrid cloud environment. The migration team's primary concern was database performance — specifically, whether SQL query patterns optimized for on-premises storage would behave differently under cloud-side I/O and network latency.
Previous tooling offered no pre-migration database intelligence. The team's only option was to migrate, monitor post-cutover, and react to issues as they emerged. Given the regulated nature of the environment, any post-go-live database incident would trigger a mandatory incident review and potential regulatory notification.
Applicare's Database Analyzer was deployed six weeks before the scheduled migration date. It baselined SQL query patterns, execution plans, lock behavior, and I/O profiles across the production database estate.
Within two weeks, the analyzer had identified three query patterns that would cause significant blocking under cloud-side load characteristics. Each pattern was benign under current on-premises conditions but would degrade severely under the different I/O latency profile of the cloud target.
The findings were surfaced to the database team with specific query fingerprints, execution plan comparisons, and projected impact at cloud load. All three were remediated — index additions, query rewrites, and connection pool adjustments — before the first migration wave began.
Go-live proceeded without a single database incident. Cloud infrastructure costs landed within 4% of the pre-migration estimate, with Applicare's rightsizing recommendations informing the final instance selection. The database team reported the pre-migration intelligence as the single most valuable capability they had ever used in a migration project.
“Our previous migrations always had database surprises post-go-live. For the first time, we knew exactly what to fix before we started. The level of pre-migration intelligence was something we had never seen from any tool before.”
Anonymous — Banking & Financial Services