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Reviewing oracle to postgres migration

Skill Pyfagorass/bookofspells/skills/githubcopilot/reviewing-oracle-to-postgres-migration

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Install
npx -y skills add Pyfagorass/bookofspells --skill reviewing-oracle-to-postgres-migration

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What its author says it does

Copied from the file, not written here

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 a database migration, reviewing migration artifacts, or validating that integration tests cover Oracle/PostgreSQL differences.

SKILL.md

3.0 KB, 528 tokens by cl100k_base, as published. Nobody here has run it

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.

What ships with it: 10 files

45.8 KB alongside SKILL.md

references/

Gives 0 of the 12 instructions most databases sql skills give in 528 tokens

Counted across 589 of the 662 authors here whose files we hold, read 2026-08-07

  • Use parameterized queriesin 37 of 589, across 34 files
  • Use timestamptz for timestampsin 30 of 589, across 14 files
  • Index foreign keysin 29 of 589, across 18 files
  • Create indexes concurrentlyin 29 of 589, across 24 files
  • Use numeric type for moneyin 25 of 589, across 8 files
  • Use cursor pagination instead of offsetin 24 of 589, across 17 files
  • Select only required columnsin 24 of 589, across 20 files
  • Add indexes manually on foreign key columnsin 22 of 589, across 12 files
  • Normalize to third normal formin 19 of 589, across 10 files
  • Configure connection poolingin 19 of 589, across 17 files
  • Put equality columns before range columns in indexesin 18 of 589, across 10 files
  • Read individual rule files for detailed explanationsin 18 of 589, across 4 files

Said here and by no other author read

  • Identify affected database objects and calling code
  • Screen each reference insight for applicability
  • Document specific risks and recommended fixes
  • Flag insights requiring a design decision
  • Confirm each reference insight was addressed
  • Verify integration tests cover failure scenarios

Grouped from the skills themselves: near-identical wordings counted once, and counted by distinct author, so one author publishing three of these counts once. Length counted with cl100k_base; the agent that loads this file may tokenize it differently.

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