diff --git "a/content/zh/post/zhangcuiping/\345\275\223\345\210\233\345\273\272Dolphin Extension\346\217\220\347\244\272can't create dolphin extension lib is not in shared_preload_libraries\346\227\266\346\200\216\344\271\210\345\212\236.md" "b/content/zh/post/zhangcuiping/\345\275\223\345\210\233\345\273\272Dolphin Extension\346\217\220\347\244\272can't create dolphin extension lib is not in shared_preload_libraries\346\227\266\346\200\216\344\271\210\345\212\236.md"
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+
+title = "当创建Dolphin Extension提示can't create dolphin extension lib is not in shared_preload_libraries时怎么办" 
+
+date = "2022-09-01" 
+
+tags = ["当创建Dolphin Extension提示can't create dolphin extension lib is not in shared_preload_libraries时怎么办"] 
+
+archives = "2023-06" 
+
+author = "张翠娉" 
+
+summary = "当创建Dolphin Extension提示can't create dolphin extension lib is not in shared_preload_libraries时怎么办"
+
+img = "/zh/post/zhangcuiping/title/img.png" 
+
+times = "14:20"
+
++++
+
+# 当创建Dolphin Extension提示can't create dolphin extension lib is not in shared_preload_libraries时怎么办？
+
+**背景介绍**：
+
+在安装好dolphin插件后，执行`create database my_test DBCOMPATIBILITY 'B';` 创建了MySQL兼容性数据库后，执行创建dolphin扩展报错。
+
+**报错内容**：
+
+```bash
+my_test=# create extension dolphin;
+ERROR:  Can't create dolphin extension lib is not in shared_preload_libraries
+```
+
+**报错原因**：参数shared_preload_libraries未修改。
+
+**解决办法**：
+
+1. 找到dolphin.so文件所在地址。
+
+   ```
+   # find / -name dolphin.so
+   /data/mogdb/install/om/script/static/plugins/plugins/dolphin/dolphin.so
+   /data/mogdb/install/app_1a363ea9/lib/postgresql/dolphin.so
+   ```
+
+2. 复制上面app的地址，修改postgresql.conf中的shared_preload_libraries参数。
+
+   ```
+   $ vim /data/mogdb/install/data/dn/postgresql.conf
+   shared_preload_libraries = '/data/mogdb/install/app_1a363ea9/lib/postgresql/dolphin.so'         
+   # (change requires restart)
+   ```
+
+3. 保存后需要重启数据库生效修改参数。
+
+   ```
+   [omm@amogdb ~]$ gs_om -t restart
+   Stopping cluster.
+   =========================================
+   Successfully stopped cluster.
+   =========================================
+   End stop cluster.
+   Starting cluster.
+   =========================================
+   [SUCCESS] amogdb
+   2022-08-16 21:55:43.617 [unknown] [unknown] localhost 140643687024896 0[0:0#0] 0 [BACKEND] WARNING:  could not create any HA TCP/IP sockets
+   2022-08-16 21:55:43.617 [unknown] [unknown] localhost 140643687024896 0[0:0#0] 0 [BACKEND] WARNING:  could not create any HA TCP/IP sockets
+   2022-08-16 21:55:43.618 [unknown] [unknown] localhost 140643687024896 0[0:0#0] 0 [BACKEND] WARNING:  No explicit IP is configured for listen_addresses GUC.
+   2022-08-16 21:55:43.619 [unknown] [unknown] localhost 140643687024896 0[0:0#0] 0 [BACKEND] WARNING:  Failed to initialize the memory protect for g_instance.attr.attr_storage.cstore_buffers (16 Mbytes) or shared memory (3711 Mbytes) is larger.
+   =========================================
+   Successfully started.
+   
+   [omm@amogdb ~]$ gsql -d my_test -p 26000 -r
+   gsql ((MogDB 3.0.1 build 1a363ea9) compiled at 2022-08-05 17:31:04 commit 0 last mr  )
+   Non-SSL connection (SSL connection is recommended when requiring high-security)
+   Type "help" for help.
+   
+   my_test=# show shared_preload_libraries ;
+                     shared_preload_libraries                  
+   ------------------------------------------------------------
+    /data/mogdb/install/app_1a363ea9/lib/postgresql/dolphin.so
+   (1 row)
+   ```
+
+4. 进入之前创建的MySQL兼容性数据库，执行如下命令创建dolphin扩展：
+
+   ```
+   my_test=# create extension dolphin;
+   CREATE EXTENSION
+   ```
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