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Expense Database and Migration Troubleshooting

Summary​

Service startup fails around persistence, expected schema is unavailable, seed evidence differs, or claim operations fail consistently.

Audience​

  • Employees, managers, HR administrators, support engineers, developers, QA engineers, DevOps engineers, and solution architects, as applicable to the symptom.

Cause​

Use the verified possibilities in Likely causes; do not infer an environment-specific cause without evidence.

Resolution​

Use Safe resolution, then complete Validation. Stop and escalate if the required action exceeds approved access.

Symptoms​

Service startup fails around persistence, expected schema is unavailable, seed evidence differs, or claim operations fail consistently.

Scope​

Expense DbContext, migration sequence/snapshot, startup initialization behavior, and persistence health.

Likely causes​

  • Required migration not applied
  • Startup initialization suppressed or outside confirmed mode
  • Persistence unavailable
  • Model/schema mismatch
  • Development seed expectation applied to a non-development context
  • Concurrent deployment governance issue

Safe diagnostic steps​

  • Check deployment/startup logs and approved migration evidence
  • Compare expected migration sequence and model snapshot
  • Confirm service/persistence health through approved operational surfaces
  • Stop on schema mismatch or migration failure
  • Do not run ad-hoc SQL or edit migration history/data

Safe resolution​

Escalate to the database/deployment owner to apply the approved migration/recovery runbook. Documentation provides no direct database repair procedure.

Validation​

Service starts, approved migration evidence matches the expected model, and supported claim reads/writes succeed.

Evidence to collect​

Environment category, deployment version, migration identifier category, startup error, health/result category, timestamp/correlation—no connection values.

Escalation​

Expense owner, database/platform owner, and release owner; incident leadership if production impact.

Requires confirmation​

Any corrective action beyond the supported resolution, incident ownership, response objectives, and production evidence locations require confirmation.

Source References​

  • microservices/src/expense-service/Infrastructure/ExpenseDbContext.cs
  • microservices/src/expense-service/Infrastructure/Migrations/ExpenseDbContextModelSnapshot.cs
  • microservices/src/expense-service/Program.cs

See Also​

Keywords​

  • Expense troubleshooting
  • Database and Migration

Revision Information​

  • Status: Draft
  • Last reviewed: 2026-07-16
  • Review cycle: Quarterly