导出全局对象

    1. 以操作系统用户omm登录数据库主节点。

    Password: ```

    3. <a name="zh-cn_topic_0237121174_table1781122816253"></a>
    4. <table><thead align="left"><tr id="zh-cn_topic_0237121174_row10837281257"><th class="cellrowborder" valign="top" width="25%" id="mcps1.2.4.1.1"><p id="zh-cn_topic_0237121174_p48382816258"><a name="zh-cn_topic_0237121174_p48382816258"></a><a name="zh-cn_topic_0237121174_p48382816258"></a>参数</p>
    5. </th>
    6. <th class="cellrowborder" valign="top" width="43.33%" id="mcps1.2.4.1.2"><p id="zh-cn_topic_0237121174_p18332812257"><a name="zh-cn_topic_0237121174_p18332812257"></a><a name="zh-cn_topic_0237121174_p18332812257"></a>参数说明</p>
    7. </th>
    8. <th class="cellrowborder" valign="top" width="31.669999999999998%" id="mcps1.2.4.1.3"><p id="zh-cn_topic_0237121174_p583122816257"><a name="zh-cn_topic_0237121174_p583122816257"></a><a name="zh-cn_topic_0237121174_p583122816257"></a>举例</p>
    9. </th>
    10. </tr>
    11. </thead>
    12. <tbody><tr id="zh-cn_topic_0237121174_row1483528152520"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237121174_p3830287252"><a name="zh-cn_topic_0237121174_p3830287252"></a><a name="zh-cn_topic_0237121174_p3830287252"></a>-U</p>
    13. </td>
    14. <td class="cellrowborder" valign="top" width="43.33%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237121174_p8232111218592"><a name="zh-cn_topic_0237121174_p8232111218592"></a><a name="zh-cn_topic_0237121174_p8232111218592"></a>连接数据库的用户名，需要是openGauss管理员用户。</p>
    15. </td>
    16. </td>
    17. </tr>
    19. </td>
    20. <td class="cellrowborder" valign="top" width="43.33%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237121174_p69431335210"><a name="zh-cn_topic_0237121174_p69431335210"></a><a name="zh-cn_topic_0237121174_p69431335210"></a>指定用户连接的密码。</p>
    21. <a name="zh-cn_topic_0237121174_ul194074341627"></a><a name="zh-cn_topic_0237121174_ul194074341627"></a><ul id="zh-cn_topic_0237121174_ul194074341627"><li>如果主机的认证策略是trust，则不会对数据库管理员进行密码验证，即无需输入-W选项；</li><li>如果没有-W选项，并且不是数据库管理员，会提示用户输入密码。</li></ul>
    22. </td>
    23. <td class="cellrowborder" valign="top" width="31.669999999999998%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237121174_p1898043113581"><a name="zh-cn_topic_0237121174_p1898043113581"></a><a name="zh-cn_topic_0237121174_p1898043113581"></a>-W abcd@123</p>
    24. </td>
    25. </tr>
    26. <tr id="zh-cn_topic_0237121174_row1823810139566"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237121174_p11238171316560"><a name="zh-cn_topic_0237121174_p11238171316560"></a><a name="zh-cn_topic_0237121174_p11238171316560"></a>-f</p>
    27. </td>
    28. <td class="cellrowborder" valign="top" width="43.33%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237121174_p323861311565"><a name="zh-cn_topic_0237121174_p323861311565"></a><a name="zh-cn_topic_0237121174_p323861311565"></a>将导出文件发送至指定目录文件夹。如果这里省略，则使用标准输出。</p>
    29. </td>
    30. <td class="cellrowborder" valign="top" width="31.669999999999998%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237121174_p11238513175619"><a name="zh-cn_topic_0237121174_p11238513175619"></a><a name="zh-cn_topic_0237121174_p11238513175619"></a>-f /home/<span id="zh-cn_topic_0237121174_text45761636125319"><a name="zh-cn_topic_0237121174_text45761636125319"></a><a name="zh-cn_topic_0237121174_text45761636125319"></a>omm</span>/backup/<em id="zh-cn_topic_0237121174_i022863611191"><a name="zh-cn_topic_0237121174_i022863611191"></a><a name="zh-cn_topic_0237121174_i022863611191"></a>MPPDB_tablespace</em>.sql</p>
    31. </td>
    32. </tr>
    33. <tr id="zh-cn_topic_0237121174_row9411195215519"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237121174_p84119521250"><a name="zh-cn_topic_0237121174_p84119521250"></a><a name="zh-cn_topic_0237121174_p84119521250"></a>-p</p>
    34. </td>
    36. <td class="cellrowborder" valign="top" width="31.669999999999998%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237121174_p341117521853"><a name="zh-cn_topic_0237121174_p341117521853"></a><a name="zh-cn_topic_0237121174_p341117521853"></a>-p <span id="zh-cn_topic_0237121174_text11526133105112"><a name="zh-cn_topic_0237121174_text11526133105112"></a><a name="zh-cn_topic_0237121174_text11526133105112"></a>8000</span></p>
    37. </td>
    38. </tr>
    39. <tr id="zh-cn_topic_0237121174_row1339718574716"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237121174_p18625164815715"><a name="zh-cn_topic_0237121174_p18625164815715"></a><a name="zh-cn_topic_0237121174_p18625164815715"></a>-t</p>
    40. </td>
    41. <td class="cellrowborder" valign="top" width="43.33%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237121174_p1962511481717"><a name="zh-cn_topic_0237121174_p1962511481717"></a><a name="zh-cn_topic_0237121174_p1962511481717"></a>或者--tablespaces-only，只转储表空间，不转储数据库或角色。</p>
    42. </td>
    43. <td class="cellrowborder" valign="top" width="31.669999999999998%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237121174_p1662514481776"><a name="zh-cn_topic_0237121174_p1662514481776"></a><a name="zh-cn_topic_0237121174_p1662514481776"></a>-</p>
    44. </td>
    45. </tr>

    示例

    1. gs_dumpall -U omm -f /home/omm/backup/MPPDB_globals.sql -p 8000 -g
    2. Password:
    3. gs_dumpall[port='8000'][2018-11-14 19:06:24]: dumpall operation successful
    4. gs_dumpall[port='8000'][2018-11-14 19:06:24]: total time: 1150  ms

    示例二： 执行gs_dumpall，导出所有数据库的公共全局表空间信息（omm用户为管理员用户），并对导出文件进行加密，导出文件为文本格式。

    1. gs_dumpall -U omm -f /home/omm/backup/MPPDB_user.sql -p 8000 -r
    2. Password:
    3. gs_dumpall[port='8000'][2018-11-14 19:03:18]: dumpall operation successful