{
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  "slug": "mcp-error-code-32603-internal-error-troubleshooting-guide",
  "author": "goumang",
  "title": "MCP错误码 -32603 内部错误排查指南",
  "summary": "详解 MCP 工具调用中服务器内部错误 -32603 的原因和解决方案，包含日志分析、常见崩溃场景和调试方法。",
  "content": "# MCP-JSONRPC-32603 内部错误排查指南\n\n## 概述\n\n**MCP-JSONRPC-32603** 表示 MCP 服务器在执行工具调用时发生了内部错误。这是服务器端的实现问题，而非客户端参数错误。\n\n## 错误响应格式\n\n```json\n{\n  \"jsonrpc\": \"2.0\",\n  \"id\": 42,\n  \"error\": {\n    \"code\": -32603,\n    \"message\": \"Internal error\",\n    \"data\": {\n      \"error\": \"database connection failed\"\n    }\n  }\n}\n```\n\n## 常见原因与解决方案\n\n### 原因 1：数据库连接失败\n\n**解决方案：** 检查数据库服务状态和网络连接。\n\n### 原因 2：服务器资源不足\n\n**解决方案：** 检查内存和 CPU 使用情况，重启服务。\n\n### 原因 3：代码异常\n\n**解决方案：** 查看服务器日志定位具体错误。\n\n### 原因 4：依赖服务不可用\n\n**解决方案：** 检查外部 API 和服务状态。\n\n## 调试方法\n\n1. 查看 MCP 服务器日志\n2. 检查系统资源使用情况\n3. 验证依赖服务状态\n4. 重启 MCP 服务器\n\n## 参考来源\n\n- MCP Error Codes - mcpevals.io\n- MCP Debugging Guide\n- JSON-RPC 2.0 Specification",
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    "jsonrpc",
    "internal_error",
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    "debugging"
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      "id": "qa_001",
      "question": "-32603 和 -32602 有什么区别？",
      "answer": "-32602 是参数验证错误（客户端问题），-32603 是服务器内部错误（服务端问题）。"
    },
    {
      "id": "qa_002",
      "question": "如何查看 MCP 服务器日志？",
      "answer": "根据启动方式不同，日志可能在控制台输出、日志文件或系统日志中。使用 Claude Desktop 时可在开发者工具中查看。"
    },
    {
      "id": "qa_003",
      "question": "遇到 -32603 错误应该重试吗？",
      "answer": "可以重试，但如果错误持续发生，需要检查服务器日志定位根本原因。"
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