The APIs provided by HiRDB are upgradeable. In general, this means that there is no need to update UAPs when you upgrade your HiRDB.

However, if the following conditions are applicable, you must preprocess, compile, and link all UAPs again:

• You will be using new HiRDB features.
• A UAP created in C language or COBOL will be executed by a HiRDB client that uses a different version of the OS.