CXXMAINT (Maintain Directory) › CXXMAINT FORMAT0102 (Base Level Full Features) › When to Use

When to Use

When upgrading a Directory (CXX) from Version 11.0 to Version 12.0 to Version 14.0, you are expected to run in r11 compatibility mode for a few weeks and use only the Version 12.0 and Version 14.0 features that are compatible. This process ensures that, should a fallback be needed, the downgrade of the CXX can be simple and fast. This process is protected by a database level format. The use of FORMAT 1 is compatible between Version 11.0, Version 12.0, and Version 14.0. FORMAT 2 includes features supported by Version 12.0 and Version 14.0 but not by Version 11.0. When the time for running in Version 11.0 compatibility mode passes, all databases need to be set to FORMAT 2 to allow the additional Version 12.0 and Version 14.0 features not supported by Version 11.0. Those additional features include the following, in which Version 12.0 and Version 14.0.

• Activates key level status, where each key can be loaded or not loaded, allowing the use of the RETIX function with the MINIMAL option.
• Allows dynamic extend to be provided in cylinders or tracks, where using cylinders allows larger extent sizes.
• Allows a database index to include a Multi-Dataset Index area.