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+# energy_hd 数据库迁移说明
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+
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+日期:2026-11-06
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+源库:`energy_prod` @ 106.120.102.238:16306
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+目标库:`energy_hd` @ 106.120.102.238:16306
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+
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+## 1. 备份
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+
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+迁移前已创建:
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+
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+```text
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+energy_prod_backup_20261106 # energy_prod 全量备份
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+energy_hd_backup_before_trim_20261106 # 裁剪前 energy_hd 全量备份
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+```
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+
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+`energy_prod` 未被修改,仍保留 51 张表。
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+
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+## 2. 保留范围
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+
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+### 权限
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+
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+只保留:
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+
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+```text
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+admin id=2 role=1
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+hd id=140 role=15
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+```
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+
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+对应:
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+
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+```text
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+sys_user_info
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+sys_role
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+sys_user_role
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+sys_role_permission
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+sys_permission # 权限定义全保留,维持菜单树
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+sys_organization_auth # 仅角色 15 的华电组织授权
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+```
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+
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+### 字典
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+
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+```text
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+dict_constants
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+unit_dict_constants
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+unit_dict_brand_model
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+sys_areas_info
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+analysis_type
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+data_transfer_type
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+component_fault_spec
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+measurement_point_component
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+```
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+
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+### 台账
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+
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+```text
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+wind_company
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+wind_field
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+wind_engine_group
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+wind_engine_mill
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+wind_relation
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+wind_field_batch
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+wind_field_contract
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+wind_field_resource
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+anemometer_tower
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+anemometer_tower_height
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+anemometer_tower_relation
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+unit_bearings
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+unit_dynamo
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+unit_gearbox
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+unit_gearbox_bearings
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+unit_gearbox_structure
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+power_word_relation_contract
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+power_word_relation_criterion
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+```
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+
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+## 3. 删除范围
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+
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+- 删除 `wind_company` 中 `COM00009 华电山东`;
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+- 删除其 16 个风场及关联批次、合同、资源、测风塔关系、机型部件;
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+- 其余非保留表数据全部清空,包括:
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+
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+```text
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+analysis_*、auto_analysis_config_*、data_transfer*、
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+vibration_alarm_event、vibration_diagnosis_result、
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+wind_exception_count、wave_data_transfer*
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+```
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+
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+表结构全部保留。
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+
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+## 4. 迁移结果
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+
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+```text
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+wind_company 1(仅华电 COM00003)
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+wind_field 12
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+wind_engine_group 259
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+wind_engine_mill 12
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+sys_user_info 2
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+sys_role 2
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+sys_role_permission 123
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+sys_permission 77
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+unit_dict_brand_model 2544
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+component_fault_spec 10
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+analysis_result 0
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+analysis_diagram_relation 0
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+vibration_alarm_event 0
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+```
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+
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+## 5. 配置切换
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+
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+已切换:
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+
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+- Nacos `hdlocal/application.properties` 数据源 URL;
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+- 平台/健康检查 `application-hdlocal.properties`;
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+- Analysis_Multi `PLATFORM_DB_NAME` 默认值及远端启动脚本;
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+- WTOAAM `conf/appConfig.json`、`conf/appConfig_prod_internal.json`。
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+
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+当前服务连接池显示:
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+
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+```text
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+energy_hd 22 个连接
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+energy_prod 1 个遗留连接(来自 192.168.50.235,非当前部署服务)
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+```
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+
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+## 6. 回滚
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+
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+如需回滚,将上述配置改回 `energy_prod` 并重启服务;数据回滚可使用:
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+
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+```sql
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+-- 确认目标后再执行
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+DROP DATABASE energy_hd;
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+CREATE DATABASE energy_hd;
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+-- 从 energy_hd_backup_before_trim_20261106 或 energy_prod_backup_20261106 恢复
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+```
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