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OMS Documentation What is OMS? Terms OMS HA Overview Hierarchical functional system Basic components OMS Oracle full data migration design and impact Limitations Data migration process Data synchronization process Deployment types System and network requirements Memory and disk requirements Environment preparations Single-node deployment Deploy OMS on multiple nodes in a single region Deploy OMS on multiple nodes in multiple regions Integrate the OIDC protocol to OMS to implement SSO Scale out OMS Check the deployment Deploy a time-series database (Optional) Log on to the OMS console Overview Configure user information Change your logon password Log off Overview Migrate data from a MySQL database to a MySQL tenant of OceanBase Database Migrate data from a MySQL tenant of OceanBase Database to a MySQL database Migrate data from an Oracle database to a MySQL tenant of OceanBase Database Migrate data from an Oracle tenant of OceanBase Database to an Oracle database Migrate data from an Oracle database to an Oracle tenant of OceanBase Database Migrate data from a DB2 LUW database to an Oracle tenant of OceanBase Database Migrate data from an Oracle tenant of OceanBase Database to a DB2 LUW database Migrate data from a DB2 LUW database to a MySQL tenant of OceanBase Database Migrate data from a MySQL tenant of OceanBase Database to a DB2 LUW database Migrate data within OceanBase Database Active-active disaster recovery between OceanBase databases Migrate data from a TiDB database to a MySQL tenant of OceanBase Database Migrate data from a PostgreSQL database to a MySQL tenant of OceanBase Database Migrate incremental data from an Oracle tenant of OceanBase Database to a MySQL database View details of a data migration project Rename a data migration project View and modify migration objects Use tags to manage data migration projects Perform batch operations on data migration projects Download and import settings of migration objects Start and pause a data migration project Release and delete a data migration project Synchronize DDL operations from a MySQL tenant of OceanBase Database to a MySQL database Synchronize DDL operations from an Oracle tenant of OceanBase Database to an Oracle database Synchronize DDL operations from a DB2 LUW database to an Oracle tenant of OceanBase Database Synchronize DDL operations from an Oracle tenant of OceanBase Database to a DB2 LUW database Synchronize DDL operations from a DB2 LUW database to a MySQL tenant of OceanBase Database Synchronize DDL operations from a MySQL tenant of OceanBase Database to a DB2 LUW database DDL synchronization between MySQL tenants of OceanBase Database DDL synchronization between Oracle tenants of OceanBase Database Overview Synchronize data from OceanBase Database to a Kafka instance Synchronize data from OceanBase Database to a RocketMQ instance Synchronize data from OceanBase Database to a DataHub instance Synchronize data from an ODP logical table to a physical table in a MySQL tenant of OceanBase Database Synchronize data from an ODP logical table to a DataHub instance Synchronize data from an IDB logical table to a physical table in a MySQL tenant of OceanBase Database Synchronize data from an IDB logical table to a DataHub instance Synchronize data from a MySQL database to a DataHub instance Synchronize data from an Oracle database to a DataHub instance View details of a data synchronization project Change the name of a data synchronization project View and modify synchronization objects Use tags to manage data synchronization projects Perform batch operations on data synchronization projects Download and import the settings of synchronization objects Start and pause a data synchronization project Release and delete a data synchronization project Create a MySQL data source Create an Oracle data source Create a TiDB data source Create a Kafka data source Create a RocketMQ data source Create a DataHub data source Create a DB2 LUW data source Create a PostgreSQL data source View data source information Copy a data source Edit a data source Delete a data source Create a database user User privileges Enable binlogs for the MySQL database Minimum privileges required when an Oracle database serves as the source O&M overview Go to the overview page View server information Update the quota View server logs View O&M tasks Skip a task or subtask Retry a task or subtask
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SubmitPreCheck

Last Updated:2025-05-28 09:46:28  Updated
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Purpose
Call description
Prerequisites
Request path
Request parameters
Response parameters
Examples
Sample request
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This topic describes the SubmitPreCheck API provided by OceanBase Migration Service (OMS).

Purpose

You can call this operation to perform a precheck on a data migration or synchronization project.

Call description

Prerequisites

This operation is supported in OMS V4.2.2 and later.

Request path

POST /api/v2?Action=SubmitPreCheck

Request parameters

Parameter Type Description
name String The name of the project, which cannot contain spaces.
projectId string The ID of the data migration or synchronization project.
subProject boolean Specifies whether to perform precheck for an increase or decrease project.
type String The type of the project. Valid values include MIGRATION and SYNC.
labelIds String The tag IDs. You can specify up to five tag IDs.
sourceEndpointId String The ID of the source data source.
sinkEndpointId String The ID of the destination data source.
transferMapping Object The mapping information about the objects to be transferred.
├─ mode String The mapping mode for the objects to be transferred. Valid values include SPECIFIC and WILDCARD, which indicate specifying specific objects and matching objects by using a rule, respectively.
├─ databases Array The database objects to be transferred. For more information, see Parameters in databases/databasesBlack.
├─ databasesBlack Array The blocklist of database objects used for the WILDCARD mode. For more information, see Parameters in databases/databasesBlack.
├─ tableAndViewWhiteList Array The wildcard-based allowlist of tables and views used for the WILDCARD mode.
├─ tableAndViewBlackList Array The wildcard-based blocklist of tables and views used for the WILDCARD mode.
commonTransferConfig Object The common settings for transfer.
├─ tableCategory String The supported table types. Valid values include ALL, WITHUNIQUEROWID, and WITHOUTUNIQUEROWID. The default value is ALL.
├─ activeActive Boolean Specifies whether to enable active-active disaster recovery.
├─ mqSerializerType String The JSON data serialization type for delivering data to message queues. Valid values include DEFAULT, CANAL, DATAWORKS_V2, SHAREPLEX, DEFAULT_WITH_SCHEMA, DEBEZIUM, DEBEZIUMFLATTEN, and DEBEZIUMSMT.
├─ mqPartitionMode String The partition routing mode for delivering data to message queues. Valid values include ONE, HASH, and TABLE. ONE specifies to deliver data to a specified partition. HASH specifies to deliver data to HASH partitions based on the primary key column or sharding columns. TABLE specifies to deliver data to HASH partitions based on database and table names.
├─ mqPartition Integer When the partitionMode parameter is set to ONE, this parameter indicates the location of the partition to which data is delivered in the current topic.
├─ datahubTopicType String The type of the topic for delivering data to DataHub. Valid values include TUPLE and BLOB.
├─ rocketMqProducerGroup String The name of the producer group. This parameter takes effect when the type of destination data source is RocketMQ. The default value is OMS.
├─ rocketMqMsgTags String The tag of the message. This parameter takes effect when the type of destination data source is RocketMQ. For example, when the value is default, the _tag suffix is added to the value by default.
├─ rocketMqEnableMsgTrace Boolean Specifies whether to enable message tracing. This parameter takes effect when the type of destination data source is RocketMQ.
├─ rocketMqSendMsgTimeout Long The message delivery timeout period. This parameter takes effect when the type of destination data source is RocketMQ.
├─ dataWorksBusinessName String The ID of the business system.
enableStructTransfer Boolean Specifies whether to allow schema transfer.
structTransferConfig Object The settings for schema transfer.
├─ byteCharConvertStrategy String The BYTE/CHAR conversion scheme. Valid values include IGNORE_BYTE_IF_BYTE_USED, FORCE_CHAR_IF_BYTE_USED, EXPAND_LEN_IF_BYTE_USED, and DO_NOTHING_IF_BYTE_USED. The default value is DO_NOTHING_IF_BYTE_USED.
├─ deferIndexCreation Boolean Specifies whether to allow post-indexing. The default value is false.
enableFullTransfer Boolean Specifies whether to enable full transfer.
enableFullVerify Boolean Specifies whether to enable full verification.
fullTransferConfig Object The settings for full transfer.
├─ nonePkUkTruncateDstTable Boolean Specifies whether to clear the destination table during full migration from a table without a unique index.
├─ allowDestTableNotEmpty Boolean Specifies whether to allow the destination table to be non-empty. You must set this parameter to true if you want to migrate data from multiple source tables to one destination table.
Notice
This parameter is available only when full verification is disabled.
├─ fullTransferSpeedMode String The concurrency for full migration. Valid values include STEADY, NORMAL, and FAST.
├─ fullVerifySpeedMode String The concurrency for full verification. Valid values include STEADY, NORMAL, and FAST.
enableIncrTransfer Boolean Specifies whether to enable incremental synchronization.
enableReverseIncrTransfer Boolean Specifies whether to enable reverse incremental synchronization.
incrTransferConfig Object The settings for incremental synchronization.
├─ startTimestamp string The start timestamp for incremental synchronization. This parameter is available only when incremental synchronization is enabled and full transfer is disabled.
├─ recordTypeWhiteList String The data types of incremental data to be synchronized in incremental synchronization. Supported data types include HEARTBEAT, INSERT, UPDATE, DELETE, BEGIN, COMMIT, ROLLBACK, DDL, and ROW.
├─ storeLogKeptHour Integer The retention period in hours of logs when incremental synchronization is enabled and the incremental log pull component is Store. The default retention period is seven days. The maximum retention period is 365 days.
├─ enableSequencingWithinTxn Boolean Specifies whether to enable intra-transaction sequencing when incremental synchronization is enabled and the incremental log pull component is Store.
├─ incrSyncConcurrency Integer The number of threads for incremental synchronization. The default value is 64.
├─ enableIncrSyncStatistics Boolean Specifies whether to enable statistics collection for incremental DML and DDL operation records.
  • Parameters in databases/databasesBlack

    Parameter Type Description
    mappedName String The name of the destination database.
    name String The name of the source database.
    id String The ID of the database.
    tables Array The settings for the table objects to be transferred in the current database. When the mode parameter is set to WILDCARD, this parameter indicates the settings for a specific blocklist or allowlist of tables and views.
    ├─ mappedName String The mapped table name.
    ├─ name String The name of the table.
    ├─ id String The ID of the table.
    ├─ whereClause String The WHERE clause in the standard SQL syntax that is used to configure row filtering.
    ├─ filterColumns Array The filter columns.
    ├─ shardColumns Array The sharding columns.
    views Array The settings for the view objects to be transferred in the current database.
    ├─ mappedName String The mapped view name.
    ├─ name String The name of the view.
    ├─ id String The ID of the view.
    ├─ whereClause String The WHERE clause in the standard SQL syntax that is used to configure row filtering.
    ├─ filterColumns Array The filter columns.
    ├─ shardColumns Array The sharding columns.
    specificTables Array The settings for the matched table objects. When the mode parameter is set to WILDCARD, this parameter indicates the rename and row filtering settings for the matched table objects.
    ├─ mappedName String The mapped table name.
    ├─ name String The name of the table.
    ├─ id String The ID of the table.
    ├─ whereClause String The WHERE clause in the standard SQL syntax that is used to configure row filtering.
    ├─ filterColumns Array The filter columns.
    ├─ shardColumns Array The sharding columns.
    specificViews Array The settings for the matched view objects. When the mode parameter is set to WILDCARD, this parameter indicates the rename settings for the matched view objects.
    ├─ mappedName String The mapped view name.
    ├─ name String The name of the view.
    ├─ id String The ID of the view.
    ├─ whereClause String The WHERE clause in the standard SQL syntax that is used to configure row filtering.
    ├─ filterColumns Array The filter columns.
    ├─ shardColumns Array The sharding columns.

Response parameters

Parameter Type Description
success Boolean Indicates whether the call is successful.
errorDetail Object The error details.
code String The error code.
message String The description.
advice String The suggestions.
requestId String The request ID.
pageNumber Integer The page number, which takes effect in a pagination query.
pageSize Integer The page size, which takes effect in a pagination query.
totalCount Integer The total number of pages returned, which takes effect in a pagination query.
cost String The time spent in processing the request, in seconds.
data string The ID of the precheck task.

Examples

Sample request

{
    "name":"test",
    "type":"MIGRATION",
    "labelIds":[
        "l_4w****wygjk"
    ],
    "sourceEndpointId":"e_4wg07f****",
    "sinkEndpointId":"e_4wfy2****",
    "transferMapping":{
        "mode":"SPECIFIC",
        "databases":[
            {
                "mappedName":"gez3***",
                "name":"ion1****bmysql",
                "id":null,
                "tables":[
                    {
                        "mappedName":"tion12***20obmysql2",
                        "name":"GRATION129****",
                        "id":null,
                        "whereClause":null,
                        "filterColumns":null,
                        "shardColumns":null,
                    }
                ],
                "views":null,
                "specificTables":null,
                "specificViews":null
            }
        ],
        "databasesBlack":null,
        "tableAndViewWhiteList":null,
        "tableAndViewBlackList":null
    },
    "commonTransferConfig":{
        "tableCategory":null,
        "activeActive":false,
        "mqSerializerType":null,
        "mqPartitionMode":null,
        "mqPartition":0,
        "datahubTopicType":null,
        "rocketMqProducerGroup":null,
        "rocketMqMsgTags":null,
        "rocketMqEnableMsgTrace":null,
        "rocketMqSendMsgTimeout":null,
        "dataWorksBusinessName":null
    },
    "enableStructTransfer":true,
    "structTransferConfig":{
        "byteCharConvertStrategy":"DO_NOTHING_IF_BYTE_USED",
        "deferIndexCreation":true
    },
    "enableFullTransfer":true,
    "enableFullVerify":true,
    "fullTransferConfig":{
        "nonePkUkTruncateDstTable":null,
        "allowDestTableNotEmpty":true,
        "fullTransferSpeedMode":"NORMAL",
        "fullVerifySpeedMode":"NORMAL"
    },
    "enableIncrTransfer":true,
    "enableReverseIncrTransfer":true,
    "incrTransferConfig":{
        "startTimestamp":1689201369,
        "recordTypeWhiteList":[
            "DELETE",
            "INSERT",
            "UPDATE"
        ],
        "storeLogKeptHour":120,
        "enableSequencingWithinTxn":true,
        "incrSyncConcurrency":64,
        "enableIncrSyncStatistics":true
    }
}

Sample response

{
    "success": true,
    "errorDetail": null,
    "code": null,
    "message": null,
    "advice": null,
    "requestId": "bf2-9bc9-****",
    "pageNumber": null,
    "pageSize": null,
    "totalCount": null,
    "cost": "269 ms",
    "data": "t_57p****"
}

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Call description
Prerequisites
Request path
Request parameters
Response parameters
Examples
Sample request
Sample response