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.MuiTreeItem-iconContainer{margin-right:4px;width:15px;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-flex-shrink:0;-ms-flex-negative:0;flex-shrink:0;-webkit-box-pack:center;-ms-flex-pack:center;-webkit-justify-content:center;justify-content:center;}.css-khel7y .MuiTreeItem-iconContainer svg{font-size:18px;}.css-khel7y .MuiTreeItem-label{width:100%;min-width:0;padding-left:4px;position:relative;font-size:1rem;line-height:1.5rem;font-family:"Helvetica Neue","sans-serif";font-weight:400;font-style:normal;color:#666666;}</style><div class="css-khel7y MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><style data-emotion="css 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style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-znl8a3"><div class="MuiBox-root css-8atqhb"><div class="MuiTypography-root MuiTypography-body1 css-1hwyipb">数据迁移</div></div><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-xjq79n" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg></div></div></div></li><li class="MuiTreeItem-root css-1oy5rnm" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-6" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-khel7y MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-znl8a3"><div class="MuiBox-root css-8atqhb"><div class="MuiTypography-root MuiTypography-body1 css-1hwyipb">数据集成</div></div><svg class="MuiSvgIcon-root 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class="MuiTreeItem-label"><div class="css-znl8a3"><div class="MuiBox-root css-8atqhb"><div class="MuiTypography-root MuiTypography-body1 css-1hwyipb">故障诊断</div></div><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-xjq79n" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg></div></div></div></li><li class="MuiTreeItem-root css-1oy5rnm" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-10" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-khel7y MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-znl8a3"><div class="MuiBox-root css-8atqhb"><div class="MuiTypography-root MuiTypography-body1 css-1hwyipb">性能调优</div></div><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-xjq79n" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg></div></div></div></li><li class="MuiTreeItem-root css-1oy5rnm" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-11" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-khel7y MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-znl8a3"><div class="MuiBox-root css-8atqhb"><div class="MuiTypography-root MuiTypography-body1 css-1hwyipb">教程</div></div><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-xjq79n" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg></div></div></div></li><li class="MuiTreeItem-root css-1oy5rnm" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-12" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-khel7y MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-znl8a3"><div class="MuiBox-root css-8atqhb"><div class="MuiTypography-root MuiTypography-body1 css-1hwyipb">TiDB 工具</div></div><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-xjq79n" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg></div></div></div></li><li class="MuiTreeItem-root css-1oy5rnm" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-13" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-khel7y MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-znl8a3"><div class="MuiBox-root css-8atqhb"><div class="MuiTypography-root MuiTypography-body1 css-1hwyipb">参考指南</div></div><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-xjq79n" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg></div></div></div></li><li class="MuiTreeItem-root css-1oy5rnm" role="treeitem" aria-expanded="true" id="left-nav-treeview-0-14" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-khel7y MuiTreeItem-content Mui-expanded" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-znl8a3"><div class="MuiBox-root css-8atqhb"><div class="MuiTypography-root MuiTypography-body1 css-1hwyipb">常见问题解答 (FAQ)</div></div><style data-emotion="css 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id="left-nav-treeview-0-14-4" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-khel7y MuiTreeItem-content Mui-expanded" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-kb2j4b"><a aria-current="page" style="text-decoration:none;width:100%;color:inherit" class="" href="/zh/tidb/stable/migration-tidb-faq"><div class="MuiBox-root css-8atqhb"><div class="MuiTypography-root MuiTypography-body1 css-1hwyipb">迁移 FAQ</div></div></a></div></div></div></li><li class="MuiTreeItem-root css-1oy5rnm" role="treeitem" id="left-nav-treeview-0-14-5" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-khel7y MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-kb2j4b"><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/upgrade-faq"><div class="MuiBox-root css-8atqhb"><div 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(min-width:600px){.css-90fn5w{-webkit-flex-direction:row;-ms-flex-direction:row;flex-direction:row;}}</style><div class="css-90fn5w"><style data-emotion="css vofosd">.css-vofosd{padding:1.5rem 0;}@media (min-width:0px){.css-vofosd{width:100%;}}@media (min-width:600px){.css-vofosd{width:calc(100% - 17.5rem);}}</style><div class="MuiBox-root css-vofosd"><style data-emotion="css 1ekb41w">.css-1ekb41w{width:100%;margin-left:auto;box-sizing:border-box;margin-right:auto;display:block;padding-left:16px;padding-right:16px;}@media (min-width:600px){.css-1ekb41w{padding-left:24px;padding-right:24px;}}@media (min-width:1536px){.css-1ekb41w{max-width:1536px;}}</style><div class="MuiContainer-root MuiContainer-maxWidthXl doc-content css-1ekb41w"><div class="markdown-body MuiBox-root css-0"><h1 id="迁移常见问题" style="position:relative"><a href="#%E8%BF%81%E7%A7%BB%E5%B8%B8%E8%A7%81%E9%97%AE%E9%A2%98" aria-label="迁移常见问题 permalink" class="anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewbox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"/></svg></a>迁移常见问题</h1><p>本文介绍 TiDB 数据迁移中的常见问题。</p><p>如果要查看迁移相关工具的常见问题，请参考以下链接：</p><ul><li><a href="/zh/tidb/stable/backup-and-restore-faq">备份与恢复常见问题</a></li><li><a href="/zh/tidb/stable/tidb-binlog-faq">TiDB Binlog 常见问题</a></li><li><a href="/zh/tidb/stable/tidb-lightning-faq">TiDB Lightning 常见问题</a></li><li><a href="/zh/tidb/stable/dm-faq">Data Migration 常见问题</a></li><li><a href="/zh/tidb/stable/ticdc-faq">TiCDC 常见问题</a></li></ul><h2 id="全量数据导出导入" style="position:relative"><a href="#%E5%85%A8%E9%87%8F%E6%95%B0%E6%8D%AE%E5%AF%BC%E5%87%BA%E5%AF%BC%E5%85%A5" aria-label="全量数据导出导入 permalink" class="anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewbox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"/></svg></a>全量数据导出导入</h2><h3 id="如何将一个运行在-mysql-上的应用迁移到-tidb-上" style="position:relative"><a href="#%E5%A6%82%E4%BD%95%E5%B0%86%E4%B8%80%E4%B8%AA%E8%BF%90%E8%A1%8C%E5%9C%A8-mysql-%E4%B8%8A%E7%9A%84%E5%BA%94%E7%94%A8%E8%BF%81%E7%A7%BB%E5%88%B0-tidb-%E4%B8%8A" aria-label="如何将一个运行在 mysql 上的应用迁移到 tidb 上 permalink" class="anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewbox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"/></svg></a>如何将一个运行在 MySQL 上的应用迁移到 TiDB 上？</h3><p>TiDB 支持绝大多数 MySQL 语法，一般不需要修改代码。</p><h3 id="导入导出速度慢各组件日志中出现大量重试eof-错误并且没有其他错误" style="position:relative"><a href="#%E5%AF%BC%E5%85%A5%E5%AF%BC%E5%87%BA%E9%80%9F%E5%BA%A6%E6%85%A2%E5%90%84%E7%BB%84%E4%BB%B6%E6%97%A5%E5%BF%97%E4%B8%AD%E5%87%BA%E7%8E%B0%E5%A4%A7%E9%87%8F%E9%87%8D%E8%AF%95eof-%E9%94%99%E8%AF%AF%E5%B9%B6%E4%B8%94%E6%B2%A1%E6%9C%89%E5%85%B6%E4%BB%96%E9%94%99%E8%AF%AF" aria-label="导入导出速度慢各组件日志中出现大量重试eof 错误并且没有其他错误 permalink" class="anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewbox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"/></svg></a>导入导出速度慢，各组件日志中出现大量重试、EOF 错误并且没有其他错误</h3><p>在没有其他逻辑出错的情况下，重试、EOF 可能是由网络问题引起的，建议首先使用相关工具排查网络连通状况。以下示例使用 <a href="https://iperf.fr/" target="_blank" referrerpolicy="no-referrer-when-downgrade">iperf</a> 进行排查：</p><ul><li><p>在出现重试、EOF 错误的服务器端节点执行以下命令：</p><pre><code class="language-shell">iperf3 -s </code></pre></li><li><p>在出现重试、EOF 错误的客户端节点执行以下命令：</p><pre><code class="language-shell">iperf3 -c &lt;server-IP&gt; </code></pre></li></ul><p>下面是一个网络连接良好的客户端节点的输出：</p><pre><code class="language-shell">$ iperf3 -c 192.168.196.58 Connecting to host 192.168.196.58, port 5201 [ 5] local 192.168.196.150 port 55397 connected to 192.168.196.58 port 5201 [ ID] Interval Transfer Bitrate [ 5] 0.00-1.00 sec 18.0 MBytes 150 Mbits/sec [ 5] 1.00-2.00 sec 20.8 MBytes 175 Mbits/sec [ 5] 2.00-3.00 sec 18.2 MBytes 153 Mbits/sec [ 5] 3.00-4.00 sec 22.5 MBytes 188 Mbits/sec [ 5] 4.00-5.00 sec 22.4 MBytes 188 Mbits/sec [ 5] 5.00-6.00 sec 22.8 MBytes 191 Mbits/sec [ 5] 6.00-7.00 sec 20.8 MBytes 174 Mbits/sec [ 5] 7.00-8.00 sec 20.1 MBytes 168 Mbits/sec [ 5] 8.00-9.00 sec 20.8 MBytes 175 Mbits/sec [ 5] 9.00-10.00 sec 21.8 MBytes 183 Mbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate [ 5] 0.00-10.00 sec 208 MBytes 175 Mbits/sec sender [ 5] 0.00-10.00 sec 208 MBytes 174 Mbits/sec receiver iperf Done. </code></pre><p>如果输出显示网络带宽较低、带宽波动大，各组件日志中就可能出现大量重试、EOF 错误。此时你需要咨询网络服务供应商以提升网络质量。</p><p>如果输出的各指标良好，请尝试更新各组件版本。如果更新后仍无法解决问题，请移步 <a href="https://asktug.com/" target="_blank" referrerpolicy="no-referrer-when-downgrade">AskTUG 论坛</a>寻求帮助。</p><h3 id="不小心把-mysql-的-user-表导入到-tidb-了或者忘记密码无法登录如何处理" style="position:relative"><a href="#%E4%B8%8D%E5%B0%8F%E5%BF%83%E6%8A%8A-mysql-%E7%9A%84-user-%E8%A1%A8%E5%AF%BC%E5%85%A5%E5%88%B0-tidb-%E4%BA%86%E6%88%96%E8%80%85%E5%BF%98%E8%AE%B0%E5%AF%86%E7%A0%81%E6%97%A0%E6%B3%95%E7%99%BB%E5%BD%95%E5%A6%82%E4%BD%95%E5%A4%84%E7%90%86" aria-label="不小心把 mysql 的 user 表导入到 tidb 了或者忘记密码无法登录如何处理 permalink" class="anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewbox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"/></svg></a>不小心把 MySQL 的 user 表导入到 TiDB 了，或者忘记密码，无法登录，如何处理？</h3><p>重启 TiDB 服务，配置文件中增加 <code>-skip-grant-table=true</code> 参数，无密码登录集群后，可以根据情况重建用户，或者重建 mysql.user 表，具体表结构搜索官网。</p><h3 id="如何导出-tidb-数据" style="position:relative"><a href="#%E5%A6%82%E4%BD%95%E5%AF%BC%E5%87%BA-tidb-%E6%95%B0%E6%8D%AE" aria-label="如何导出 tidb 数据 permalink" class="anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewbox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"/></svg></a>如何导出 TiDB 数据？</h3><p>你可以通过以下方式导出 TiDB 数据：</p><ul><li>参考 <a href="https://blog.csdn.net/xin_yu_xin/article/details/7574662" target="_blank" referrerpolicy="no-referrer-when-downgrade">MySQL 使用 mysqldump 导出某个表的部分数据</a>，使用 mysqldump 加 where 条件导出。</li><li>使用 MySQL client 将 select 的结果输出到一个文件。</li></ul><h3 id="如何从-db2oracle-数据库迁移到-tidb" style="position:relative"><a href="#%E5%A6%82%E4%BD%95%E4%BB%8E-db2oracle-%E6%95%B0%E6%8D%AE%E5%BA%93%E8%BF%81%E7%A7%BB%E5%88%B0-tidb" aria-label="如何从 db2oracle 数据库迁移到 tidb permalink" class="anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewbox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"/></svg></a>如何从 DB2、Oracle 数据库迁移到 TiDB？</h3><p>DB2、Oracle 到 TiDB 数据迁移（增量+全量），通常做法有：</p><ul><li>使用 Oracle 官方迁移工具，如 OGG、Gateway（透明网关）、CDC (Change Data Capture)。</li><li>自研数据导出导入程序实现。</li><li>导出 (Spool) 成文本文件，然后通过 Load infile 进行导入。</li><li>使用第三方数据迁移工具。</li></ul><p>目前看来 OGG 最为合适。</p><h3 id="用-sqoop-批量写入-tidb-数据虽然配置了---batch-选项但还是会遇到-javasqlbatchupdateexecptionstatement-count-5001-exceeds-the-transaction-limitation-的错误该如何解决" style="position:relative"><a href="#%E7%94%A8-sqoop-%E6%89%B9%E9%87%8F%E5%86%99%E5%85%A5-tidb-%E6%95%B0%E6%8D%AE%E8%99%BD%E7%84%B6%E9%85%8D%E7%BD%AE%E4%BA%86---batch-%E9%80%89%E9%A1%B9%E4%BD%86%E8%BF%98%E6%98%AF%E4%BC%9A%E9%81%87%E5%88%B0-javasqlbatchupdateexecptionstatement-count-5001-exceeds-the-transaction-limitation-%E7%9A%84%E9%94%99%E8%AF%AF%E8%AF%A5%E5%A6%82%E4%BD%95%E8%A7%A3%E5%86%B3" aria-label="用 sqoop 批量写入 tidb 数据虽然配置了 batch 选项但还是会遇到 javasqlbatchupdateexecptionstatement count 5001 exceeds the transaction limitation 的错误该如何解决 permalink" class="anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewbox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"/></svg></a>用 Sqoop 批量写入 TiDB 数据，虽然配置了 <code>--batch</code> 选项，但还是会遇到 <code>java.sql.BatchUpdateExecption:statement count 5001 exceeds the transaction limitation</code> 的错误，该如何解决？</h3><ul><li><p>在 Sqoop 中，<code>--batch</code> 是指每个批次提交 100 条 statement，但是默认每个 statement 包含 100 条 SQL 语句，所以此时 100 * 100 = 10000 条 SQL 语句，超出了 TiDB 的事务限制 5000 条，可以增加选项 <code>-Dsqoop.export.records.per.statement=10</code> 来解决这个问题，完整的用法如下：</p><pre><code class="language-bash">sqoop export \ -Dsqoop.export.records.per.statement=10 \ --connect jdbc:mysql://mysql.example.com/sqoop \