DB2 Version 9.7 for Linux, UNIX, and Windows
DB2 Version 9.7 for Linux, UNIX, and Windows
Differences in the behavior among versions of the SDK for Java™ can cause variations in the results that you receive when you run programs under the IBM® Data Server Driver for JDBC and SQLJ.
When you retrieve a DBCS substitution character, such as X'FCFC' in code page Cp943, from a database table, the retrieved value differs, depending on whether you are using an IBM SDK for Java or an SDK for Java from Oracle.
For an SDK for Java from Oracle, the substitution character is retrieved as U+0000. For an IBM SDK for Java, the substitution character is retrieved as X'FFFD'.
IBM SDKs for Java support more DBCS code pages than SDKs for Java from Oracle. Therefore, if you get errors because of unsupported code pages with an SDK for Java from Oracle, try using an IBM SDK for Java.
The IBM SDKs for Java support 256-bit encryption, but the SDKs for Java from Oracle do not have this support. Therefore, if you use any of the IBM Data Server Driver for JDBC and SQLJ security mechanisms that include encryption, you need to use an IBM SDK for Java.
Support for system monitoring in the IBM Data Server Driver for JDBC and SQLJ includes collection of core driver time and network I/O time. Retrieval of this information requires capabilities that are in any SDK for Java Version 5 or later. However, the IBM SDK for Java Version 1.4.2 also has support that enables collection of core driver time and network I/O time. If you use the IBM SDK for Java Version 1.4.2, the core driver time and network I/O time are rounded to the nearest microsecond. If you use an SDK for Java Version 5 or later, the core driver time and network I/O time are rounded to the nearest nanosecond.