Version information
Release date: September 13, 2022
Version: V2.2.11
Overview
OceanBase Connector/J V2.2.11 introduces new features including ArrayBinding, CallableStatement set by name, and setRemarksReportingLoadBalance in Oracle mode, enhancing compatibility with MySQL and Oracle databases. It is suitable for general business use.
Feature enhancements
- Added ArrayBinding in Oracle mode. When used under the PS protocol, it binds parameters as arrays to achieve multiple batch executions in one go, reducing data interaction costs between the server and client.
- Added support for the CallableStatement set by name feature in Oracle mode, allowing values to be assigned based on predefined variable names.
- Added support for the setRemarksReporting feature in Oracle mode. Remarks information can be obtained through metadata methods such as getColumns.
- Improved MySQL compatibility in MySQL mode, such as aligning behaviors like setObject and PreparedStatement caching.
- Optimized the getServerTZTablesImported query method to improve connection establishment efficiency.
- Enhanced the performance of XID complex type queries, added localized processing functionality, and provided corresponding options for control.
Bug fixes
- Fixed an issue where a SELECT statement with UNION ALL returned only one row of data and did not send a fetch request under the PS combined protocol.
- Fixed an issue where, when useServerPrepStmts=true, if createStatement()->excuteQuery() failed, calling s.close() in a case block did not actually close the statement, triggering an error due to the observer PS cursor exceeding its limit.
- Fixed an issue where the return values of JDBC DatabaseMetaData.storesUpperCaseIdentifiers() and storesLowerCaseIdentifiers() conflicted in Oracle mode.