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Extending HCL OneDB™Beyond standard relational database objects, HCL OneDB™ can be extended to handle specialized data types, access methods, routines, and other objects. HCL OneDB™ includes many built-in extensions that are fully integrated in the database server. HCL OneDB™ also provides DataBlade® modules, which are packages of extended database objects for a particular purpose and that are installed separately from the database server. Alternatively, you can create your own user-defined objects for HCL OneDB™.
Creating extensionsYou can create user-defined data types, routines, access methods, and other database objects to suit your needs. You can use application programming interfaces to write user-defined routines and applications that access data in HCL OneDB™ databases.
User-Defined Routines and Data Types Developer's GuideThe HCL OneDB™ User-Defined Routines and Data Types Developer's Guide describes how to define new data types and enable user-defined routines (UDRs) to extend HCL OneDB™.
Develop a user-defined routine
A UDR with HDR

A UDR with HDR

If you are using High-Availability Data Replication (HDR), there are some rules you must follow when running UDRs:

Install the UDR object file on both servers of an HDR pair under the same absolute path name.
Name the UDR object file identically on both servers of an HDR pair.
Register the UDR only on the primary server.
Do not use the UDR to create any persistent external files or persistent memory objects.

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