diff --git a/content/zh/docs/Developerguide/PG_GTT_ATTACHED_PIDS.md b/content/zh/docs/Developerguide/PG_GTT_ATTACHED_PIDS.md
index 12e134c5435255398833b5e5203731820372acaf..e3b0e83cc433a7400d2be57b53ceff4dd43c446e 100644
--- a/content/zh/docs/Developerguide/PG_GTT_ATTACHED_PIDS.md
+++ b/content/zh/docs/Developerguide/PG_GTT_ATTACHED_PIDS.md
@@ -1,10 +1,10 @@
-# PG\_GTT_ATTACHED_PIDS<a name="ZH-CN_TOPIC_0242385946"></a>
-
-PG\_GTT_ATTACHED_PIDS视图查看哪些会话正在使用全局临时表，调用pg_get_attached_pid函数。
-
-**表 1**  PG\_GTT_ATTACHED_PIDS字段
-
-<a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_t9a322933edc649349d16f5bb7c397568"></a>
+# PG\_GTT\_ATTACHED\_PIDS<a name="ZH-CN_TOPIC_0267385597"></a>
+
+PG\_GTT\_ATTACHED\_PIDS视图查看哪些会话正在使用全局临时表，调用pg\_get\_attached\_pid函数。
+
+**表 1**  PG\_GTT\_ATTACHED\_PIDS字段
+
+<a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_t9a322933edc649349d16f5bb7c397568"></a>
 <table><thead align="left"><tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r479932505d8442ccb53618b9f805b142"><th class="cellrowborder" valign="top" width="25.77%" id="mcps1.2.4.1.1"><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a2c0b5ec2a1fb45da835f59c750be23ec"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a2c0b5ec2a1fb45da835f59c750be23ec"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a2c0b5ec2a1fb45da835f59c750be23ec"></a>名称</p>
 </th>
 <th class="cellrowborder" valign="top" width="16.73%" id="mcps1.2.4.1.2"><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_aee7cb2ac3a24413aac056bb613146a76"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_aee7cb2ac3a24413aac056bb613146a76"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_aee7cb2ac3a24413aac056bb613146a76"></a>类型</p>
@@ -24,24 +24,23 @@ PG\_GTT_ATTACHED_PIDS视图查看哪些会话正在使用全局临时表，调
 </td>
 <td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0cabf8c75a48458fab9735da5a46b220"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0cabf8c75a48458fab9735da5a46b220"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0cabf8c75a48458fab9735da5a46b220"></a>name</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"></a>全局临时表名。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"></a>全局临时表名称。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>relid</p>
+<tr id="row19383959131511"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p3872633441"><a name="p3872633441"></a><a name="p3872633441"></a>relid</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>oid</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p16384195913153"><a name="p16384195913153"></a><a name="p16384195913153"></a>oid</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>全局临时表oid。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p1738414594157"><a name="p1738414594157"></a><a name="p1738414594157"></a>全局临时表的oid。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>pids</p>
+<tr id="row185121530162"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p1951212321613"><a name="p1951212321613"></a><a name="p1951212321613"></a>pids</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>bigint[]</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p1512139162"><a name="p1512139162"></a><a name="p1512139162"></a>bigint[]</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>线程pid列表。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p551293131613"><a name="p551293131613"></a><a name="p551293131613"></a>线程pid列表。</p>
 </td>
 </tr>
 </tbody>
-</table>
-
-
+</table>
+
diff --git a/content/zh/docs/Developerguide/PG_GTT_RELSTATS.md b/content/zh/docs/Developerguide/PG_GTT_RELSTATS.md
index 3ae94e0dad23618c107a664a6357fe4a586535f8..cf4b2df445d6a44fc297057c843b07754988e109 100644
--- a/content/zh/docs/Developerguide/PG_GTT_RELSTATS.md
+++ b/content/zh/docs/Developerguide/PG_GTT_RELSTATS.md
@@ -1,11 +1,10 @@
-# PG\_GTT_RELSTATS<a name="ZH-CN_TOPIC_0242385946"></a>
-
-PG\_GTT_RELSTATS视图查看当前会话所有全局临时表基本信息，调用pg_get_gtt_relstats函数。
-
-**表 1**  PG\_GTT_RELSTATS字段
-
-<a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_t9a322933edc649349d16f5bb7c397568"></a>
-
+# PG\_GTT\_RELSTATS<a name="ZH-CN_TOPIC_0267385595"></a>
+
+PG\_GTT\_RELSTATS视图查看当前会话所有全局临时表基本信息，调用pg\_get\_gtt\_relstats函数。
+
+**表 1**  PG\_GTT\_RELSTATS字段
+
+<a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_t9a322933edc649349d16f5bb7c397568"></a>
 <table><thead align="left"><tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r479932505d8442ccb53618b9f805b142"><th class="cellrowborder" valign="top" width="25.77%" id="mcps1.2.4.1.1"><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a2c0b5ec2a1fb45da835f59c750be23ec"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a2c0b5ec2a1fb45da835f59c750be23ec"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a2c0b5ec2a1fb45da835f59c750be23ec"></a>名称</p>
 </th>
 <th class="cellrowborder" valign="top" width="16.73%" id="mcps1.2.4.1.2"><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_aee7cb2ac3a24413aac056bb613146a76"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_aee7cb2ac3a24413aac056bb613146a76"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_aee7cb2ac3a24413aac056bb613146a76"></a>类型</p>
@@ -25,52 +24,51 @@ PG\_GTT_RELSTATS视图查看当前会话所有全局临时表基本信息，调
 </td>
 <td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0cabf8c75a48458fab9735da5a46b220"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0cabf8c75a48458fab9735da5a46b220"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0cabf8c75a48458fab9735da5a46b220"></a>name</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"></a>全局临时表名。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"></a>全局临时表名称。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>relfilenode</p>
+<tr id="row19383959131511"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p12384195914157"><a name="p12384195914157"></a><a name="p12384195914157"></a>relfilenode</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>oid</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p16384195913153"><a name="p16384195913153"></a><a name="p16384195913153"></a>oid</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>relfilenode。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p1738414594157"><a name="p1738414594157"></a><a name="p1738414594157"></a>文件对象的ID。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>relpages</p>
+<tr id="row185121530162"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p1951212321613"><a name="p1951212321613"></a><a name="p1951212321613"></a>relpages</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>integer</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p1512139162"><a name="p1512139162"></a><a name="p1512139162"></a>integer</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>全局临时表的磁盘页面数。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p551293131613"><a name="p551293131613"></a><a name="p551293131613"></a>全局临时表的磁盘页面数。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>reltuples</p>
+<tr id="row1526519522156"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p526645261517"><a name="p526645261517"></a><a name="p526645261517"></a>reltuples</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>real</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p82665522153"><a name="p82665522153"></a><a name="p82665522153"></a>real</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>全局临时表的记录数。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p1626675218151"><a name="p1626675218151"></a><a name="p1626675218151"></a>全局临时表的记录数。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>relallvisible</p>
+<tr id="row42084282166"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p1820815288163"><a name="p1820815288163"></a><a name="p1820815288163"></a>relallvisible</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>integer</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p520842820165"><a name="p520842820165"></a><a name="p520842820165"></a>integer</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>被标识为全可见的页面数。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p178844523263"><a name="p178844523263"></a><a name="p178844523263"></a>被标识为全可见的页面数。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>relfrozenxid</p>
+<tr id="row1921922101617"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p8214222169"><a name="p8214222169"></a><a name="p8214222169"></a>relfrozenxid</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>xid</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p15210224169"><a name="p15210224169"></a><a name="p15210224169"></a>xid</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>该表中所有在这个之前的事务ID已经被一个固定的（"frozen"）事务ID替换。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p8112956193210"><a name="p8112956193210"></a><a name="p8112956193210"></a>该表中所有在这个之前的事务ID已经被一个固定的（"frozen"）事务ID替换。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>relminmxid</p>
+<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p19436184631611"><a name="p19436184631611"></a><a name="p19436184631611"></a>relminmxid</p>
 </td>
 <td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>xid</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>暂时没用。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p1490835111712"><a name="p1490835111712"></a><a name="p1490835111712"></a>预留接口，暂未启用。</p>
 </td>
 </tr>
 </tbody>
-</table>
-
-
+</table>
+
diff --git a/content/zh/docs/Developerguide/PG_GTT_STATS.md b/content/zh/docs/Developerguide/PG_GTT_STATS.md
index af977ef5cefeb13fee2011fc689a66b7f1a79944..db4ca3033fd4e35c049b518ae25efd48868248b0 100644
--- a/content/zh/docs/Developerguide/PG_GTT_STATS.md
+++ b/content/zh/docs/Developerguide/PG_GTT_STATS.md
@@ -1,11 +1,10 @@
-# PG\_GTT_STATS<a name="ZH-CN_TOPIC_0242385946"></a>
-
-PG\_GTT_STATS视图查看当前会话所有全局临时表单列统计信息，调用pg_get_gtt_statistics函数。
-
-**表 1**  PG\_GTT_STATS字段
-
-<a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_t9a322933edc649349d16f5bb7c397568"></a>
-
+# PG\_GTT\_STATS<a name="ZH-CN_TOPIC_0267385596"></a>
+
+PG\_GTT\_STATS视图查看当前会话所有全局临时表单列统计信息，调用pg\_get\_gtt\_statistics函数。
+
+**表 1**  PG\_GTT\_STATS字段
+
+<a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_t9a322933edc649349d16f5bb7c397568"></a>
 <table><thead align="left"><tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r479932505d8442ccb53618b9f805b142"><th class="cellrowborder" valign="top" width="25.77%" id="mcps1.2.4.1.1"><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a2c0b5ec2a1fb45da835f59c750be23ec"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a2c0b5ec2a1fb45da835f59c750be23ec"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a2c0b5ec2a1fb45da835f59c750be23ec"></a>名称</p>
 </th>
 <th class="cellrowborder" valign="top" width="16.73%" id="mcps1.2.4.1.2"><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_aee7cb2ac3a24413aac056bb613146a76"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_aee7cb2ac3a24413aac056bb613146a76"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_aee7cb2ac3a24413aac056bb613146a76"></a>类型</p>
@@ -25,94 +24,93 @@ PG\_GTT_STATS视图查看当前会话所有全局临时表单列统计信息，
 </td>
 <td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0cabf8c75a48458fab9735da5a46b220"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0cabf8c75a48458fab9735da5a46b220"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0cabf8c75a48458fab9735da5a46b220"></a>name</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"></a>全局临时表名。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ac31f5ff19b584b57a1631bd878ee65f1"></a>全局临时表名称。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>attname</p>
+<tr id="row19383959131511"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p2861163314381"><a name="p2861163314381"></a><a name="p2861163314381"></a>attname</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>name</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p154148126404"><a name="p154148126404"></a><a name="p154148126404"></a>name</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>属性名。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p1738414594157"><a name="p1738414594157"></a><a name="p1738414594157"></a>属性名称。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>inherited</p>
+<tr id="row185121530162"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p1951212321613"><a name="p1951212321613"></a><a name="p1951212321613"></a>inherited</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>boolean</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p1512139162"><a name="p1512139162"></a><a name="p1512139162"></a>boolean</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>是否统计有继承关系的对象。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p551293131613"><a name="p551293131613"></a><a name="p551293131613"></a>是否统计有继承关系的对象。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>null_frac</p>
+<tr id="row1526519522156"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p025220449384"><a name="p025220449384"></a><a name="p025220449384"></a>null_frac</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>real</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p82665522153"><a name="p82665522153"></a><a name="p82665522153"></a>real</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>该字段中为NULL的记录的比率。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p1626675218151"><a name="p1626675218151"></a><a name="p1626675218151"></a>该字段中为NULL的记录的比率。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>avg_width</p>
+<tr id="row42084282166"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p1820815288163"><a name="p1820815288163"></a><a name="p1820815288163"></a>avg_width</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>integer</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p520842820165"><a name="p520842820165"></a><a name="p520842820165"></a>integer</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>非NULL记录的平均存储宽度，以字节计。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p178844523263"><a name="p178844523263"></a><a name="p178844523263"></a>非NULL记录的平均存储宽度，以字节计算。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>n_distinct</p>
+<tr id="row1921922101617"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p2296145463820"><a name="p2296145463820"></a><a name="p2296145463820"></a>n_distinct</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>real</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p15210224169"><a name="p15210224169"></a><a name="p15210224169"></a>real</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>标识全局统计信息中字段里唯一的非NULL数据值的数目。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p1348622334311"><a name="p1348622334311"></a><a name="p1348622334311"></a>标识全局统计信息中字段里唯一的非NULL数据值的数目。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>most_common_vals</p>
+<tr id="row2127172883919"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p812762811397"><a name="p812762811397"></a><a name="p812762811397"></a>most_common_vals</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>text[]</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p1512792816393"><a name="p1512792816393"></a><a name="p1512792816393"></a>text[]</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>高频值列表，按照出现的频率排序。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p912732873917"><a name="p912732873917"></a><a name="p912732873917"></a>高频值列表，按照出现的频率排序。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>most_common_freqs</p>
+<tr id="row0607152433910"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p5607224183919"><a name="p5607224183919"></a><a name="p5607224183919"></a>most_common_freqs</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>real[]</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p17607192463910"><a name="p17607192463910"></a><a name="p17607192463910"></a>real[]</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>高频值的频率。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p460772443911"><a name="p460772443911"></a><a name="p460772443911"></a>高频值的频率。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>histogram_bounds</p>
+<tr id="row173353202391"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p5335102010398"><a name="p5335102010398"></a><a name="p5335102010398"></a>histogram_bounds</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>text[]</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p833518204396"><a name="p833518204396"></a><a name="p833518204396"></a>text[]</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>等频直方图描述列中的数据分布（不包含高频值）。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p19335720103916"><a name="p19335720103916"></a><a name="p19335720103916"></a>等频直方图描述列中的数据分布（不包含高频值）。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>correlation</p>
+<tr id="row11860121612396"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p5860151617398"><a name="p5860151617398"></a><a name="p5860151617398"></a>correlation</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>real</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p686010160397"><a name="p686010160397"></a><a name="p686010160397"></a>real</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>相关系数。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p086020164395"><a name="p086020164395"></a><a name="p086020164395"></a>相关系数。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>most_common_elems</p>
+<tr id="row81748139398"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p91748137393"><a name="p91748137393"></a><a name="p91748137393"></a>most_common_elems</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>text[]</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p131745134395"><a name="p131745134395"></a><a name="p131745134395"></a>text[]</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>类型高频值列表，用于数组类型或一些其他类型。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p151743136395"><a name="p151743136395"></a><a name="p151743136395"></a>类型高频值列表，用于数组类型或一些其他类型。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>most_common_elem_freqs</p>
+<tr id="row2287132113918"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p8287182153918"><a name="p8287182153918"></a><a name="p8287182153918"></a>most_common_elem_freqs</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>real[]</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p4287124398"><a name="p4287124398"></a><a name="p4287124398"></a>real[]</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>类型高频值的频率。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p1228711213918"><a name="p1228711213918"></a><a name="p1228711213918"></a>类型高频值的频率。</p>
 </td>
 </tr>
-<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_ae5b8cacf94c84403b6cd75d26fc174df"></a>elem_count_histogram</p>
+<tr id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_r37d2b2511ed84812b6f857b53fa914cd"><td class="cellrowborder" valign="top" width="25.77%" headers="mcps1.2.4.1.1 "><p id="p16738236404"><a name="p16738236404"></a><a name="p16738236404"></a>elem_count_histogram</p>
 </td>
-<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a7ee0570d26c64faa986204bcb4d30100"></a>real[]</p>
+<td class="cellrowborder" valign="top" width="16.73%" headers="mcps1.2.4.1.2 "><p id="p11486317410"><a name="p11486317410"></a><a name="p11486317410"></a>real[]</p>
 </td>
-<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a><a name="zh-cn_topic_0237122419_zh-cn_topic_0059777999_a0a110c88d6ee4f37ae2426b6d1b70c98"></a>数组类型直方图。</p>
+<td class="cellrowborder" valign="top" width="57.49999999999999%" headers="mcps1.2.4.1.3 "><p id="p1490835111712"><a name="p1490835111712"></a><a name="p1490835111712"></a>数组类型直方图。</p>
 </td>
 </tr>
 </tbody>
-</table>
-
-
+</table>
+
diff --git "a/content/zh/docs/Developerguide/\344\275\277\347\224\250SQL\345\207\275\346\225\260\346\216\245\345\217\243\350\277\233\350\241\214\351\200\273\350\276\221\350\247\243\347\240\201.md" "b/content/zh/docs/Developerguide/\344\275\277\347\224\250SQL\345\207\275\346\225\260\346\216\245\345\217\243\350\277\233\350\241\214\351\200\273\350\276\221\350\247\243\347\240\201.md"
new file mode 100644
index 0000000000000000000000000000000000000000..60b66bf6b67859acad70a03ac18dd6e1fb76f4fd
--- /dev/null
+++ "b/content/zh/docs/Developerguide/\344\275\277\347\224\250SQL\345\207\275\346\225\260\346\216\245\345\217\243\350\277\233\350\241\214\351\200\273\350\276\221\350\247\243\347\240\201.md"
@@ -0,0 +1,78 @@
+# 使用SQL函数接口进行逻辑解码<a name="ZH-CN_TOPIC_0264264807"></a>
+
+openGauss可以通过调用SQL函数，进行创建、删除、推进逻辑复制槽，获取解码后的事务日志。
+
+## 前提条件<a name="zh-cn_topic_0237121453_section1288315272236"></a>
+
+-   逻辑日志目前从主机节点中抽取，默认关闭SSL连接，如果进行逻辑复制，需要先上配置GUC参数[ssl](zh-cn_topic_0242371486.md#zh-cn_topic_0237124696_zh-cn_topic_0059778664_s8c4647db116f44c4b9ce3dceee3d6ffa)=on。
+
+    >![](public_sys-resources/icon-note.gif) **说明：** 
+    >为避免安全风险，请保证启用SSL连接。
+
+
+-   设置GUC参数[wal\_level](zh-cn_topic_0242371497.md#zh-cn_topic_0237124707_zh-cn_topic_0059778393_s2c76f5957066407a959191148f2c780f)=logical。
+-   设置GUC参数[max\_replication\_slots](zh-cn_topic_0242371502.md#section7322161612568)\>每个节点所需的（物理流复制槽数+逻辑复制槽数）。
+
+    物理流复制槽提供了一种自动化的方法来确保主节点在所有备节点或从备节点收到xlog之前，xlog不会被移除。也就是说物理流复制槽用于支撑集群HA。集群所需要的物理流复制槽数为：备节点加从备的和与主节点之间的比例。例如，假设集群的高可用方案为1主、1备、1从备，则所需物理流复制槽数为2。又例如，假设集群的高可用方案为1主3备，则所需物理流复制槽数为3。
+
+    关于逻辑复制槽数，请按如下规则考虑。
+
+    -   一个逻辑复制槽只能解码一个Database的修改，如果需要解码多个Database，则需要创建多个逻辑复制槽。
+    -   如果需要多路逻辑复制同步给多个目标数据库，在源端数据库需要创建多个逻辑复制槽，每个逻辑复制槽对应一条逻辑复制链路。
+
+-   仅限数据库管理员和拥有REPLICATION权限的用户进行操作。
+
+## 操作步骤<a name="zh-cn_topic_0237121453_section14821441121619"></a>
+
+1.  以集群安装用户登录openGauss集群主节点。
+2.  使用如下命令通过连接默认数据库postgres。
+
+    ```
+    gsql -d postgres -p 16000 -r
+    ```
+
+    其中，16000为数据库端口号，用户可根据实际情况替换。
+
+3.  创建名称为slot1的逻辑复制槽。
+
+    ```
+    postgres=# SELECT * FROM pg_create_logical_replication_slot('slot1', 'mppdb_decoding');
+    slotname | xlog_position
+    ----------+---------------
+    slot1    | 0/601C150
+    (1 row)
+    ```
+
+4.  在数据库中创建表t，并向表t中插入数据。
+
+    ```
+    postgres=# CREATE TABLE t(a int PRIMARY KEY, b int);
+    postgres=# INSERT INTO t VALUES(3,3);
+    ```
+
+5.  读取复制槽slot1解码结果，解码条数为4096。
+
+    ```
+    postgres=# SELECT * FROM pg_logical_slot_peek_changes('slot1', NULL, 4096);
+    location  |  xid  | data                                                                                         
+    -----------+-------+-------------------------------------------------------------------------------------------------------------------------------------------------
+    -------------------------------------------
+     0/601C188 | 1010023 | BEGIN 1010023
+     0/601ED60 | 1010023 | COMMIT 1010023 CSN 1010022
+     0/601ED60 | 1010024 | BEGIN 1010024
+     0/601ED60 | 1010024 | {"table_name":"public.t","op_type":"INSERT","columns_name":["a","b"],"columns_type":["integer","integer"],"columns_val":["3","3"],"old_keys_name":[],"old_keys_type":[],"old_keys_val":[]}
+     0/601EED8 | 1010024 | COMMIT 1010024 CSN 1010023
+    (5 rows)
+    ```
+
+6.  删除逻辑复制槽slot1。
+
+    ```
+    postgres=#  SELECT * FROM pg_drop_replication_slot('slot1');
+     pg_drop_replication_slot
+    --------------------------
+    
+    (1 row)
+    ```
+
+
diff --git "a/content/zh/docs/Developerguide/\344\275\277\347\224\250\351\200\273\350\276\221\345\244\215\345\210\266\345\267\245\345\205\267\345\244\215\345\210\266\346\225\260\346\215\256.md" "b/content/zh/docs/Developerguide/\344\275\277\347\224\250\351\200\273\350\276\221\345\244\215\345\210\266\345\267\245\345\205\267\345\244\215\345\210\266\346\225\260\346\215\256.md"
new file mode 100644
index 0000000000000000000000000000000000000000..cb81b5ebf162867a9c899dcfc288f5c7e9e6f710
--- /dev/null
+++ "b/content/zh/docs/Developerguide/\344\275\277\347\224\250\351\200\273\350\276\221\345\244\215\345\210\266\345\267\245\345\205\267\345\244\215\345\210\266\346\225\260\346\215\256.md"
@@ -0,0 +1,4 @@
+# 使用逻辑复制工具复制数据<a name="ZH-CN_TOPIC_0264264808"></a>
+
+目前支持GaussDB逻辑复制的工具有SDR和DRS。复制工具从GaussDB抽取逻辑日志后到对端数据库回放。
+
diff --git "a/content/zh/docs/Developerguide/\351\200\273\350\276\221\345\244\215\345\210\266.md" "b/content/zh/docs/Developerguide/\351\200\273\350\276\221\345\244\215\345\210\266.md"
new file mode 100644
index 0000000000000000000000000000000000000000..63c3fd4e500a0ae3396d3ecfd7e3890b42f8d7ea
--- /dev/null
+++ "b/content/zh/docs/Developerguide/\351\200\273\350\276\221\345\244\215\345\210\266.md"
@@ -0,0 +1,7 @@
+# 逻辑复制<a name="ZH-CN_TOPIC_0264264804"></a>
+
+-   **[逻辑解码](逻辑解码.md)**  
+
+-   **[使用逻辑复制工具复制数据](使用逻辑复制工具复制数据.md)**  
+
+
diff --git "a/content/zh/docs/Developerguide/\351\200\273\350\276\221\350\247\243\347\240\201.md" "b/content/zh/docs/Developerguide/\351\200\273\350\276\221\350\247\243\347\240\201.md"
new file mode 100644
index 0000000000000000000000000000000000000000..25f2edb4efb5630d7994912a9247d9997f1dac3b
--- /dev/null
+++ "b/content/zh/docs/Developerguide/\351\200\273\350\276\221\350\247\243\347\240\201.md"
@@ -0,0 +1,7 @@
+# 逻辑解码<a name="ZH-CN_TOPIC_0264264805"></a>
+
+-   **[逻辑解码概述](逻辑解码概述.md)**  
+
+-   **[使用SQL函数接口进行逻辑解码](使用SQL函数接口进行逻辑解码.md)**  
+
+
diff --git "a/content/zh/docs/Developerguide/\351\200\273\350\276\221\350\247\243\347\240\201\346\246\202\350\277\260.md" "b/content/zh/docs/Developerguide/\351\200\273\350\276\221\350\247\243\347\240\201\346\246\202\350\277\260.md"
new file mode 100644
index 0000000000000000000000000000000000000000..a75d6d043056191932f7412093fb1bcfde095ba2
--- /dev/null
+++ "b/content/zh/docs/Developerguide/\351\200\273\350\276\221\350\247\243\347\240\201\346\246\202\350\277\260.md"
@@ -0,0 +1,33 @@
+# 逻辑解码概述<a name="ZH-CN_TOPIC_0264264806"></a>
+
+## 功能描述<a name="zh-cn_topic_0237121452_section187151209719"></a>
+
+openGauss对数据复制能力的支持情况为：
+
+支持通过数据迁移工具定期向异构数据库（如Oracle等）进行数据同步，不具备实时数据复制能力。不足以支撑与异构数据库间并网运行实时数据同步的诉求。
+
+openGauss提供了逻辑解码功能，通过反解xlog的方式生成逻辑日志。目标数据库解析逻辑日志以实时进行数据复制。具体如[图1](#zh-cn_topic_0237121452_fig65787201989)所示。逻辑复制降低了对目标数据库的形态限制，支持异构数据库、同构异形数据库对数据的同步，支持目标库进行数据同步期间的数据可读写，数据同步时延低。
+
+**图 1**  逻辑复制<a name="zh-cn_topic_0237121452_fig65787201989"></a>  
+![](figures/逻辑复制.png "逻辑复制")
+
+逻辑复制由两部分组成：逻辑解码和数据复制。逻辑解码会输出以事务为单位组织的逻辑日志。业务或数据库中间件将会对逻辑日志进行解析并最终实现数据复制。openGauss当前只提供逻辑解码功能，因此本章节只涉及逻辑解码的说明。
+
+逻辑解码为逻辑复制提供事务解码的基础能力，openGauss使用SQL函数接口进行逻辑解码。此方法调用方便，不需使用工具，对接外部工具接口也比较清晰，不需要额外适配。
+
+由于逻辑日志是以事务为单位的，在事务提交后才能输出，且逻辑解码是由用户驱动的；因此为了防止事务开始时的xlog被系统回收，或所需的事务信息被VACUUM回收，openGauss新增了逻辑复制槽，用于阻塞xlog的回收。
+
+一个逻辑复制槽表示一个更改流，这些更改可以在其它集群上以它们在原集群上产生的顺序被重播。逻辑复制槽，由每个逻辑日志的获取者维护一个。
+
+## 注意事项<a name="zh-cn_topic_0237121452_section128900341517"></a>
+
+-   不支持DDL语句解码。
+-   不支持列存、数据页复制的解码。
+-   当执行DDL语句（如alter table）后，该DDL语句前尚未解码的物理日志可能会丢失。
+-   使用逻辑解码功能时，禁止进行集群在线扩容。
+-   单条元组大小不超过1GB，考虑解码结果可能大于插入数据，因此建议单条元组大小不超过500MB。
+-   不支持压缩表的DML语句解码。
+-   openGauss支持解码的数据类型为：INTEGER、BIGINT、SMALLILNT、TINYINT、SERIAL、SMALLSERIAL、BIGSERIAL、FLOAT、DOUBLE PRECISION、DATE、TIME\[WITHOUT TIME ZONE\]、TIMESTAMP\[WITHOUT TIME ZONE\]、CHAR\(n\)、VARCHAR\(n\)、TEXT。
+-   目前默认不支持ssl连接，如果需要ssl连接需要设置guc参数ssl=on。
+-   如果使用JDBC创建逻辑复制槽，则逻辑复制槽名称必须小于64个字符，以字母或下划线开头，且只包含字母、数字或者下划线中的一种或几种。
+
diff --git a/content/zh/menu/index.md b/content/zh/menu/index.md
index e0e19870d37c6e1e79921a11280c9442d073421a..d6b1c47069657393c14a370ded84cc3072cf9c87 100644
--- a/content/zh/menu/index.md
+++ b/content/zh/menu/index.md
@@ -1232,6 +1232,11 @@ headless: true
             -   [SNAPSHOT.SNAPSHOT]({{< relref "./docs/Developerguide/SNAPSHOT-SNAPSHOT.md" >}})
             -   [SNAPSHOT.TABLES\_SNAP\_TIMESTAMP]({{< relref "./docs/Developerguide/SNAPSHOT-TABLES_SNAP_TIMESTAMP.md" >}})
         -   [WDR Snapshot 数据表]({{< relref "./docs/Developerguide/WDR-Snapshot-数据表.md" >}})
+   -   [逻辑复制]({{< relref "./docs/Developerguide/逻辑复制.md" >}})
+        -   [逻辑解码]({{< relref "./docs/Developerguide/逻辑解码.md" >}})
+            -   [逻辑解码概述]({{< relref "./docs/Developerguide/逻辑解码概述.md" >}})
+            -   [使用SQL函数接口进行逻辑解码]({{< relref "./docs/Developerguide/使用SQL函数接口进行逻辑解码.md" >}})
+        -   [使用逻辑复制工具复制数据]({{< relref "./docs/Developerguide/使用逻辑复制工具复制数据.md" >}})				
     -   [GUC参数说明]({{< relref "./docs/Developerguide/GUC参数说明.md" >}})
         -   [GUC使用说明]({{< relref "./docs/Developerguide/GUC使用说明.md" >}})
         -   [文件位置]({{< relref "./docs/Developerguide/文件位置.md" >}})