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OceanBase Connector/J

V2.4.0
  • What is OceanBase Connector J?
    • Compatibility requirements
    • Overview of OceanBase Connector/J
  • Install Driver
    • Install and load the OceanBase Connector/J driver
  • Instructions
    • Quick start
      • Import packages
      • Create a database connection
      • Create a Statement object
      • Run queries and retrieve ResultSet objects
      • Process ResultSet objects
      • Close ResultSet and Statement objects
      • Manage tables and data
      • Commit changes
      • Close a database connection
      • Example
    • Data sources and URL
      • Data source overview
      • Data source characteristics and properties
      • Create and connect to a data source instance
      • Database URL
    • Java data streams
      • Overview of Java data streams
      • LONG and LONG RAW data types
      • Use LOBs
        • Overview of LOB data types
        • LOB data interface
        • LOB locator API
      • CHAR, VARCHAR, and RAW data types
    • Statement caching
      • Overview of statement caching
      • Use statement caching
      • Reuse statement objects
    • Use CallableStatements to call stored procedures
    • Handle SQL exceptions
    • Result set
      • Overview of result sets
      • Limits
      • FetchSize
      • refreshRow
      • useCursorFetch
    • Batch processing
    • Failover and Load-Balancing
      • Failover and load balancing modes
      • LoadBalance strategies
      • LoadBalance strategies configuration methods
    • Security features
    • SQL NetworkCostInfo
    • Troubleshooting
  • Reference
    • Features specific to the Oracle mode
      • Binary Protocol (Prepared Statements)
        • COM_STMT_PREPARE_EXECUTE
        • COM_STMT_SEND_PIECE_DATA
      • Call PL stored procedures
      • Result set performance
      • Use ARRAY and STRUCT classes
      • Distributed transactions
        • Overview of distributed transactions
        • XA components
        • Distributed transaction examples
      • Error messages in Oracle mode
      • Get remarks information
      • Data types supported in Oracle mode
    • Supported SQL and PL data types
    • Common APIs
      • Overview of common APIs
      • java.sql.Connection
      • java.sql.CallableStatement
      • java.sql.DatabaseMetaData
      • java.sql.Driver
      • java.sql.PreparedStatement
      • java.sql.ParameterMetaData
      • java.sql.ResultSet
      • java.sql.ResultSetMetaData
      • java.sql.Statement
      • javax.sql.ConnectionPoolDataSource
      • javax.naming.Context
      • javax.sql.PooledConnection
  • Release Notes
    • V2.4
      • OceanBase Connector/J V2.4.0
    • V2.2
      • OceanBase Connector/J V2.2.11
      • OceanBase Connector/J V2.2.10
      • OceanBase Connector/J V2.2.7
      • OceanBase Connector/J V2.2.6
      • OceanBase Connector/J V2.2.3
      • OceanBase Connector/J V2.2.0

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  3. V2.4.0

OceanBase Connector/J V2.4.0

Last Updated:2026-09-04 08:24:25

Version information
Overview
Feature enhancements
Bug fixes

Version information

  • Release date: October 18, 2022

  • Version: V2.4.0

Overview

JDBC 2.4.0 introduces support for the OB2.0 protocol and provides end-to-end tracing capabilities in collaboration with OceanBase Database and ODP. This version is recommended for regular business use and is suggested to be used with OceanBase Database V4.0.0.

Feature enhancements

  • Added support for the OB2.0 protocol via the useOceanBaseProtocolV20 control, which is enabled by default.

  • Added support for end-to-end tracing in collaboration with OceanBase Database and ODP via the enableFullLinkTrace control, which is disabled by default. When enableFullLinkTrace is set to true, useOceanBaseProtocolV20 will also be forcibly changed to true.

Bug fixes

  • Fixed an issue where LoadBalance in daemon thread mode reported the No active connection found for master exception during network fluctuations.

  • Fixed an issue where the Server returned an exception due to the ArrayBinding setNull API.

  • Fixed an issue under the PS two-in-one protocol (useServerPrepStmts=true&useOraclePrepareExecute=true) where Procedures were called in a loop, but only the first one closed the PS.

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