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Employee Database and Migration Troubleshooting

Summary​

Employee EF Core context/migrations and monolith/extracted coexistence.

Audience​

  • HR administrators, support engineers, developers, QA engineers, and DevOps engineers

Symptoms​

Service startup fails around migration, Employee persistence fails, or data appears inconsistent between stores.

Scope​

Employee EF Core context/migrations and monolith/extracted coexistence.

Cause​

Likely causes​

  • Database unavailable or configuration invalid
  • Migration application failed or drift exists
  • Tenant query filter/identifier family differs from expectation
  • Monolith and extracted stores are being compared as if shared
  • Constraint or transaction failure rejected a save

Safe diagnostic steps​

  1. Check startup and migration logs through approved observability
  2. Identify target store/schema ownership and route source
  3. Use migration history and sanitized read-only consistency evidence
  4. Separate aggregate-save failure from outbox/consumer behavior

Resolution​

Safe resolution​

  • Follow approved migration/deployment recovery owned by database/DevOps teams
  • Correct route/configuration through governed deployment
  • Reconcile through approved tooling; direct production data edits are prohibited

Validation​

Service starts, health and authenticated read succeed, expected migration state is recorded, and tenant isolation holds.

Evidence to collect​

Service version, migration identifier/status, safe error category, timestamp, correlation identifier, route/store owner.

Escalation​

Database/DevOps owner for migration; Employee owner for model/transaction; gateway/data owners for coexistence.

Source References​

  • microservices/src/employee-service/Program.cs
  • microservices/src/employee-service/Infrastructure/EmployeeDbContext.cs
  • microservices/src/employee-service/Infrastructure/Migrations/
  • Data/AppDbContext.cs

See Also​

Keywords​

  • Employee troubleshooting
  • Database and Migration
  • safe diagnostics

Revision Information​

  • Status: Draft
  • Last reviewed: 2026-07-15
  • Review cycle: Quarterly