The JCONNECT_VERSION connection property determines the driver’s behavior and the features activated.
For example, SAP Adaptive Server 15.5 supports both SAP jConnect 6.05 and 7.0, however, these two versions process datetime and time data differently. When connecting to SAP Adaptive Server 15.5, SAP jConnect 7.0, which supports microsecond granularity for time data, uses bigdatetime or bigtime even if the target SAP Adaptive Server columns are defined as datetime or time. SAP jConnect 6.05, however, does not support microsecond granularity and always transfers datetime or time data when connecting to SAP Adaptive Server 15.5.
You can set the SAP jConnect version by using either the SybDriver.setVersion method or the JCONNECT_VERSION connection property.