# Azure Database Migration > Expert knowledge for Azure Database Migration service development including troubleshooting, decision making, limits & quotas, security, integrations & coding patterns, and deployment. Use when planning Azure DMS migrations for MySQL, PostgreSQL, SQL Server/SSIS, SQL MI, or MongoDB workloads, and other Azure Database Migration service related development tasks. Not for Azure Migrate (use azure-migrate), Azure SQL Database (use azure-sql-database), Azure SQL Managed Instance (use azure-sql-managed-instance), SQL Server on Azure Virtual Machines (use azure-sql-virtual-machines). Use when this capability is needed. - Skill: `tomevault-io/azure-database-migration-2` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/azure-database-migration-2` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/azure-database-migration-2/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: DevOps & Infra - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/azure-database-migration-2 --- # Azure Database Migration Skill This skill provides expert guidance for Azure Database Migration. Covers troubleshooting, decision making, limits & quotas, security, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities. ## How to Use This Skill > **IMPORTANT for Agent**: This file may be large. Use the **Category Index** below to locate relevant sections, then use `read_file` with specific line ranges (e.g., `L136-L144`) to read the sections needed for the user's question This skill requires **network access** to fetch documentation content. Use `mcp_microsoftdocs:microsoft_docs_fetch` to retrieve full articles. - **Fallback**: Use the built-in `WebFetch` tool if the Microsoft Learn MCP server is not available. ## Category Index | Category | Lines | Description | |----------|-------|-------------| | Troubleshooting | L28-L32 | Diagnosing and resolving Azure DMS classic migration failures and source DB connectivity issues (network, auth, firewall, TLS) during database migrations. | | Decision Making | L34-L39 | Choosing the right Azure DMS tool and scenario for your source/target databases, plus FAQs on supported migrations, limitations, and how to use Azure Database Migration Service. | | Limits & Quotas | L41-L48 | Migration-specific limits, unsupported features, and constraints when using Azure DMS to move MySQL, PostgreSQL, SQL Managed Instance, MongoDB, and hybrid deployments. | | Security | L50-L54 | Security guidance for Azure DMS migrations, including SQL best practices (network, auth, encryption) and configuring custom RBAC roles for MySQL migration scenarios. | | Integrations & Coding Patterns | L56-L59 | Automating MySQL-to-Azure Database for MySQL migrations using Azure Database Migration Service with PowerShell scripts, parameters, and end-to-end workflow examples. | | Deployment | L61-L65 | Using Azure DMS to redeploy or migrate SSIS packages to Azure SQL Database or SQL Managed Instance, including configuration steps and migration considerations. | ### Troubleshooting | Topic | URL | |-------|-----| | Troubleshoot common Azure DMS classic migration issues | https://learn.microsoft.com/en-us/azure/dms/known-issues-troubleshooting-dms | | Fix Azure DMS source database connectivity problems | https://learn.microsoft.com/en-us/azure/dms/known-issues-troubleshooting-dms-source-connectivity | ### Decision Making | Topic | URL | |-------|-----| | Choose database migration tools with the Azure DMS matrix | https://learn.microsoft.com/en-us/azure/dms/dms-tools-matrix | | Answer common Azure Database Migration Service usage questions | https://learn.microsoft.com/en-us/azure/dms/faq | | Select supported Azure DMS migration scenarios | https://learn.microsoft.com/en-us/azure/dms/resource-scenario-status | ### Limits & Quotas | Topic | URL | |-------|-----| | Review migration limitations to Azure Database for MySQL | https://learn.microsoft.com/en-us/azure/dms/known-issues-azure-mysql-fs-online | | Review online PostgreSQL to Azure Database for PostgreSQL migration limitations | https://learn.microsoft.com/en-us/azure/dms/known-issues-azure-postgresql-online | | Review online migration limits to Azure SQL Managed Instance | https://learn.microsoft.com/en-us/azure/dms/known-issues-azure-sql-db-managed-instance-online | | Understand Azure DMS hybrid mode limitations and issues | https://learn.microsoft.com/en-us/azure/dms/known-issues-dms-hybrid-mode | | Review MongoDB to Azure Cosmos DB migration limitations with DMS | https://learn.microsoft.com/en-us/azure/dms/known-issues-mongo-cosmos-db | ### Security | Topic | URL | |-------|-----| | Apply security best practices for DMS SQL migrations | https://learn.microsoft.com/en-us/azure/dms/dms-security-best-practices | | Configure custom RBAC roles for MySQL migrations in DMS | https://learn.microsoft.com/en-us/azure/dms/resource-custom-roles-mysql-database-migration-service | ### Integrations & Coding Patterns | Topic | URL | |-------|-----| | Automate MySQL to Azure MySQL migration with DMS PowerShell | https://learn.microsoft.com/en-us/azure/dms/migrate-mysql-to-azure-mysql-powershell | ### Deployment | Topic | URL | |-------|-----| | Redeploy SSIS packages to Azure SQL Database with DMS | https://learn.microsoft.com/en-us/azure/dms/how-to-migrate-ssis-packages | | Migrate SSIS packages to Azure SQL Managed Instance with DMS | https://learn.microsoft.com/en-us/azure/dms/how-to-migrate-ssis-packages-managed-instance | --- > Source: [atc-net/atc-agentic-toolkit](https://github.com/atc-net/atc-agentic-toolkit) — distributed by [TomeVault](https://tomevault.io).