OceanBase for Oracle
| 功能 | 说明 |
|---|---|
结构迁移 | 如目标不存在所选表，则自动根据源端元数据，结合映射生成对端创建语句并执行创建 |
全量数据迁移 | 逻辑迁移，通过顺序扫描表数据，将数据分批写入到对端数据库 |
增量实时同步 | 支持 INSERT, UPDATE, DELETE 常见 DML 同步 |
数据校验和订正 | 全量数据校验，并可选根据校验结果订正差异数据，支持定时，文档：创建定时校验订正任务 |
修改订阅 | 新增、删除、修改订阅表，支持历史数据迁移，文档：修改订阅 |
重置位点 | 按 时间戳 回溯位点，重新消费过去一段时间的增量日志 |
表名映射 | 支持 和源端保持一致, 转小写, 转大写, 以'_数字'后缀截取 |
DDL 同步 |
|
元数据检索 | 从源端表查对端，查询设置过过滤条件的 |
高级功能
| 功能 | 说明 |
|---|---|
CDC-based Incremental Data Sync | Support incremental data synchronization based on OceanBase LogProxy. |
Removal of Target Data before Full Data Migration | Remove the existing data in the Target before running the Full Data Migration, applicable for DataJobs reruning and scheduled Full Data migrations. |
Recreating Target Table | Recreate target tables before running the Full Data Migration, applicable for DataJobs reruning and scheduled Full Data migrations. |
Highly Concurrent Row-Level Write | It has the distributed database characteristics. A highly concurrent row-level write strategy (ROW) is adopted by default. |
Incremental Data Write Conflict Resolution Rule | IGNORE: Ignore primary key conflicts (skip writing), REPLACE: Replace the entire row in case of primary key conflicts. |
自定义代码 | 文档1：创建自定义代码任务 |
数据过滤条件 | 支持 WHERE 条件进行数据过滤，内容为 SQL 92 子集，文档：创建数据过滤任务 |
限制和注意点
| 限制项 | 说明 |
|---|---|
OceanBase Version | Currently only OceanBase for MySQL is supported. |
OceanBase Data Types | Geospatial data is not supported. |
前置条件
| 条件 | 说明 |
|---|---|
Permissions for Account | Permissions for all tables in the SYS tenant databases and SELECT permission for databases and tables to be synced. |
Port Preparation | Allow the migration and sync node (Worker) to connect to the OceanBase ports (e.g., 2881) and LogProxy ports (if available, e.g., 2983). |
任务参数
| 参数名称 | 说明 |
|---|---|
needJsonEscape | Escape special characters in JSON to be written to the target database. |
fullDataSqlConditionEnabled | Add filtering conditions in SQL during source data scanning. It only works in Full Data migration. |
eventStoreSize | Cache size for parsed incremental events. |
clusterUrl | OceanBase cluster URL (similar to a name server). |
obLogProxyHost | LogProxy service address, typically in the format ip:2983. Required for LogProxy incremental mode. |
rpcPortList | RPC ports for OceanBase server nodes. If the host parameter is ip1;ip2, this parameter should be port1;port2. Common port is 2882. Required for LogProxy incremental mode. |
syncAccount | Account for LogProxy to connect to OceanBase server (optional). |
syncPwd | Password for LogProxy to connect to OceanBase server (optional). |
tenant | The tenant where the subscribed tables reside. |
clusterName | OceanBase cluster name. |
workingMode | Libobcdc parameter that LogProxy depends on. The default value is storage. |
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 |
|---|---|
Permissions for Account | SELECT, INSERT, DELETE, UPDATE, and common DDL permissions. |
Port Preparation | Allow the migration and sync node (Worker) to connect to the OceanBase port (e.g., 3306). |
任务参数
| 参数名称 | 说明 |
|---|---|
keyConflictStrategy | Strategy for handling primary key conflicts during write in Incremental DataTask:
|
writeStrategy | Target write strategies include:
|
Tips: 通用参数配置请参考 通用参数及功能