OpenGauss 到 OpenGauss
| 功能 | 说明 |
|---|---|
Schema Migration | If the target schema does not exist, BladePipe will automatically generate and execute CREATE statements based on the source metadata and the mapping rule. |
Full Data Migration | Migrate data by sequentially scanning data in tables and writing it in batches to the target database. |
Incremental Data Sync | Sync of common DML like INSERT, UPDATE, DELETE is supported. |
Data Verification and Correction | Verify all existing data. Optionally, you can correct the inconsistent data based on verification results. Scheduled DataTasks are supported. |
Subscription Modification | Add, delete, or modify the subscribed tables with support for historical data migration. For more information, see Modify Subscription. |
Table Name Mapping | Support the mapping rules, namely, keeping the name the same as that in Source, converting the text to lowercase, converting the text to uppercase, truncating the name by "_digit" suffix. |
Metadata Retrieval | Retrieve the target metadata with filtering conditions from the source table. |
高级功能
| 功能 | 说明 |
|---|---|
0 值时间处理 | 支持将 0 值时间设置成不同类型的值,防止写入对端报错 |
Custom Code | For more information, see Custom Code Processing, Debug Custom Code and Logging in Custom Code. |
Data Filtering Conditions | Support data filtering using WHERE conditions, with SQL-92 as the SQL language. For more information, see Data Filtering. |
Setting Target Primary Key | Change the primary key to another field to facilitate data aggregation and other operations. |
前置条件
| 条件 | 说明 |
|---|---|
账号权限 | 需要权限如下(以自建数据库为例):
|
增量同步准备 | 准备动作按如下步骤进行:
|
网络准备 | 迁移同 步节点(sidecar)可连接 OpenGauss 标准交互接口(如 5432) |
任务参数
| 参数名称 | 说明 |
|---|---|
fullFetchSize | 全量扫描数据设置的 fetch size |
eventStoreSize | 缓存解析完毕的增量事件缓存大小 |
ignoreGisSRID | 解析 GIS 数据类型时是否忽略 SRID |
defaultGisSRID | 设置 GIS 数据类型的 SRID |
Tips: 通用参数配置请参考 通用参数及功能
前置条件
| 条件 | 说明 |
|---|---|
账号权限 | 具备 SELECT, INSERT, DELETE, UPDATE,常见 DDL 权限 |
网络准备 | 迁移同步节点(sidecar)可连接 OpenGauss 标准交互接口(如 5432) |
任务参数
| 参数名称 | 说明 |
|---|---|
keyConflictStrategy | 增量写入遇到主键冲突策略:
|
dstWholeReplace | 将 INSERT 和 UPDATE 操作变成对端的整行覆盖 |
enableTimeZoneProcess | 是否对时间字段进行时区转换 |
timezone | 目标端 OpenGauss 时区,例如 +08:00 Asia/Shanghai America/New_York |
defaultZeroDate | 在遇到'0000-00-00 00:00:00' / '0000-00-00' 值时用于替换的默认值,可选参数有:
|
caseSensitive | 对端写入SQL语句表名大小写策略,包含
|
writeStrategy | 对端写入策略,包含
|
defaultGisSRID | 设置 GIS 数据类型的 SRID |
Tips: 通用参数配置请参考 通用参数及功能