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reviewing-oracle-to-postgres-migration

Identifies Oracle-to-PostgreSQL migration risks by cross-referencing code against known behavioral differences (empty strings, refcursors, type coercion, sorting, timestamps, concurrent transactions, etc.). Use when planning migration of a procedure, trigger, query, or refcursor client, and again to validate the finished port.

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Works withPostgreSQL
See how to install

Files included (12)

  • SKILL.md3.3 KB
  • LICENSE1.0 KB
  • references/empty-strings-handling.md2.0 KB
  • references/no-data-found-exceptions.md2.6 KB
  • references/oracle-parentheses-from-clause.md4.8 KB
  • references/oracle-to-postgres-sorting.md1.9 KB
  • references/oracle-to-postgres-timestamp-timezone.md8.4 KB
  • references/oracle-to-postgres-to-char-numeric.md4.2 KB
  • references/oracle-to-postgres-type-coercion.md4.9 KB
  • references/postgres-concurrent-transactions.md9.4 KB
  • references/postgres-refcursor-handling.md5.7 KB
  • references/REFERENCE.md1.9 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

Attribution: Sourced from github/awesome-copilot by GitHub Community, licensed MIT. Modified for this collection.

Oracle-to-PostgreSQL Database Migration

Surfaces migration risks and validates migration work against known Oracle/PostgreSQL behavioral differences documented in the references/ folder.

When to use

  1. Planning — Before starting migration work on a procedure, trigger, query, or refcursor client. Identify which reference insights apply so risks are addressed up front.
  2. Validating — After migration work is done, confirm every applicable insight was addressed and integration tests cover the new PostgreSQL semantics.

Workflow

Determine the task type:

Planning a migration? Follow the risk assessment workflow. Validating completed work? Follow the validation workflow.

Risk assessment workflow (planning)

Risk Assessment:
- [ ] Step 1: Identify the migration scope
- [ ] Step 2: Screen each insight for applicability
- [ ] Step 3: Document risks and recommended actions

Step 1: Identify the migration scope

List the affected database objects (procedures, triggers, queries, views) and the application code that calls them.

Step 2: Screen each insight for applicability

Review the reference index in references/REFERENCE.md. For each entry, determine whether the migration scope contains patterns affected by that insight. Read the full reference file only when the insight is potentially relevant.

Step 3: Document risks and recommended actions

For each applicable insight, note the specific risk and the recommended fix pattern from the reference file. Flag any insight that requires a design decision (e.g., whether to preserve Oracle empty-string-as-NULL semantics or adopt PostgreSQL behavior).

Validation workflow (post-migration)

Validation:
- [ ] Step 1: Map the migration artifact
- [ ] Step 2: Cross-check applicable insights
- [ ] Step 3: Verify integration test coverage
- [ ] Step 4: Gate the result

Step 1: Map the migration artifact

Identify the migrated object and summarize the change set.

Step 2: Cross-check applicable insights

For each reference in references/REFERENCE.md, confirm the behavior or test requirement is acknowledged and addressed in the migration work.

Step 3: Verify integration test coverage

Confirm tests exercise both the happy path and the failure scenarios highlighted in applicable insights (exceptions, sorting, refcursor consumption, concurrent transactions, timestamps, etc.).

Step 4: Gate the result

Return a checklist asserting each applicable insight was addressed, migration scripts run, and integration tests pass.

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