{
  "id": "P219",
  "slug": "mysql-8-4-start-slave-removed-syntax-error-start-replica-official-docs",
  "status": "search-observed",
  "product": "MySQL 8.4",
  "family": "Database operational contract",
  "canonical_url": "https://gitdocs.org/fix/mysql-8-4-start-slave-removed-syntax-error-start-replica-official-docs",
  "query_alias_url": "https://gitdocs.org/q/mysql-8-4-start-slave-removed-syntax-error-start-replica-official-docs",
  "markdown_url": "https://gitdocs.org/fix/mysql-8-4-start-slave-removed-syntax-error-start-replica-official-docs.md",
  "json_url": "https://gitdocs.org/api/fixes/mysql-8-4-start-slave-removed-syntax-error-start-replica-official-docs.json",
  "canonical_query": "MySQL 8.4 START SLAVE removed syntax error START REPLICA official docs",
  "observed_codex_queries": [
    "MySQL 8.4 START SLAVE removed syntax error START REPLICA official docs",
    "site:dev.mysql.com/doc/refman/8.4 START SLAVE START REPLICA",
    "MySQL 8.4 START REPLICA manual",
    "https://dev.mysql.com/doc/refman/8.4/en/start-replica.html",
    "https://dev.mysql.com/doc/refman/8.0/en/start-slave.html",
    "https://dev.mysql.com/doc/relnotes/mysql/8.4/en/",
    "https://dev.mysql.com/doc/relnotes/mysql/8.4/en/news-8-4-0.html"
  ],
  "organic_dependency_search_count": 7,
  "affected_versions": "",
  "exact_errors": [],
  "diagnosis": "The local schema/query is valid, but upgrade path, restart behavior, replication syntax, or background operations changed in the server release.",
  "before": "",
  "after": "",
  "verification": "Verifier checks durability, restart, and operational safety rather than a one-shot query. Check operational state and security, not a compatibility switch that weakens the server.",
  "unsafe_fixes": [
    "Changing local code without checking the current external contract.",
    "Retrying the same install, build, or API call with no version/source change.",
    "Applying a broad unsafe bypass when a narrow compatibility fix is available."
  ],
  "last_verified_at": "2026-06-25",
  "neutral_validation": {
    "organic_search_observed": true,
    "organic_strict_pass": true,
    "no_web_counterfactual_run": false,
    "no_web_strict_pass": null,
    "search_necessity_under_fixture": null,
    "no_web_oracle_note": "Observed query evidence is separated from necessity proof; no-web and stale-contract counterfactuals should be tracked separately."
  },
  "source_trail": [
    {
      "url": "https://dev.mysql.com/doc/relnotes/mysql/8.4/en/news-8-4-0.html",
      "label": "MySQL 8.4.0 release notes"
    },
    {
      "url": "https://dev.mysql.com/doc/refman/8.4/en/start-replica.html",
      "label": "Official reference opened by Codex"
    },
    {
      "url": "https://dev.mysql.com/doc/refman/8.0/en/start-slave.html",
      "label": "Official reference opened by Codex"
    },
    {
      "url": "https://dev.mysql.com/doc/relnotes/mysql/8.4/en/",
      "label": "Official reference opened by Codex"
    },
    {
      "url": "https://dev.mysql.com/doc/relnotes/mysql/8.4/en/news-8-4-0.html",
      "label": "Official reference opened by Codex"
    }
  ],
  "source_github_links": []
}