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sqldeadlock-review skillA

sqldeadlock-review is agent-read markdown (skill) from vanterx/mssql-performance-skills: Analyze SQL Server deadlock XML (from system_health XE session, SSMS deadlock graph, or trace) to identify root cause and produce a prioritized remediation plan. Applies 17 known deadlock patterns (P1–P17). Use when a deadlock monitor captures a graph or users report intermittent deadlock errors (error 1205)..

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What the file says

# SQL Server Deadlock Analysis Skill

## Purpose

Parse a SQL Server deadlock XML graph, identify the victim and winner processes, extract the queries and lock acquisition patterns involved, match against 17 known deadlock patterns (P1–P17), and produce a prioritized remediation plan.

## Input

Accept any of:
- Raw `<deadlock>` XML (from system_health XE session or SSMS deadlock graph Save As XML)
- A file path to a `.xdl` or `.xml` deadlock graph file
- A description of the deadlock if XML is not available

## How to Run

1. Parse the XML structure
2. Extract process list (victim, winner, their queries, lock waits)
3. Extract resource list (what locks are held and requested)
4. Match against pattern library
5. Generate remediation recommendations

---

## XML Structure Reference

```xml
<deadlock>
  <victim-list>
    <victimProcess id="process1a2b" />
  </victim-list>
  <process-list>
    <process id="process1a2b" taskpriority="0" logused="0"
             waitresource="KEY: 5:72057594038910976 (abc123)"
             waittime="4023" ownerId="123456"
             transactionname="user_transaction"
             currentdb="5" spid="52" kpid="1234"
…

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How to install

Latest version
mdr add vanterx/mssql-performance-skills/sqldeadlock-review@git:20260919.8a7bf7e
Exact content
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Versions

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git:20260919.8a7bf7e latest2026-09-19 8a7bf7e 22,594 BA view · diff
git:20260705.6d391a92026-07-05 6d391a9 22,287 BA view · diff
git:20260605.9ec0ebe2026-06-05 9ec0ebe 20,388 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (22594 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

vanterx/mssql-performance-skills · 5 stars · license MIT · pushed 2026-09-19 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_imjcseefh26shs47
GET https://markdownregistry.com/api/v1/resolve?ref=vanterx/mssql-performance-skills/sqldeadlock-review
GET https://markdownregistry.com/api/v1/blob/e98c82262447edb2f2682468d80bb9894db180a09cdef7ebe2f3a8c4df6fc61a

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