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A unified distributed database ready for your transactional, analytical, and AI workloads.

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OceanBase Database

SQL - V4.2.1

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    SQL - V 4.2.1
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    enable_transfer

    Last Updated:2026-04-28 09:23:27  Updated
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    Note

    This parameter is available since OceanBase Database V4.2.1.

    Description

    enable_transfer specifies whether to allow transfer within a tenant. This parameter is invalid when enable_rebalance is set to False.

    Attributes

    Attribute
    Description
    Type Boolean
    Default value True
    Value range
    • True
    • False
    Effective upon OBServer node restart No

    Considerations

    • You can dynamically adjust the number of log streams for a tenant based on the load balancing algorithm and enable automatic leader balancing and partition balancing in the tenant as follows:

      enable_rebalance=true;
      enable_transfer=true;
      
    • You can balance existing log streams without transfer or dynamic changes in the number of log streams as follows:

      enable_rebalance=true;
      enable_transfer=false;
      
    • You can disable all O&M commands and operations related to load balancing as follows:

      enable_rebalance=false;
      

    Examples

    • Disable transfer for all tenants:

      ALTER SYSTEM SET enable_transfer = false TENANT = all_user;
      
    • Enable transfer for the MySQL tenant:

      ALTER SYSTEM SET enable_rebalace = true TENANT='MySQL';
      

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