Dynamic change of IMS resource definitions

• Databases (full-function and Fast Path DEDBs)

• Programs

• Transactions

• Fast path route codes

• ACB or DMB control blocks (ACBLIB and IMS directory)

• ACB/Directory
  

• Terminals, LTERMs, subpools (requires spare elements)

• MSPLINK MSC physical link
• MSLINK MSC logical link
• MSNAME MSC link path
• MSLTERM MSC remote LTERM

IMS requires that all system elements must be defined to IMS before programs and databases can be used. This includes the programs you plan to run under IMS, the databases you will need information from, and administrative communications. The ability to add this information dynamically can eliminate additional IMSGENs and the corresponding IMS downtime. DELTA PLUS uses DELTA Lists to make changes to the above elements without an IMSGEN.

DELTA PLUS Modifications to IMS

You can make new ACB and DMB definitions resulting from a new ACBGEN active in IMS using IMS Online Change. It is not necessary to perform a MODBLKS IMSGEN or to use IMS Online Change to make changes to application, transaction, database and route code definitions.

DELTA PLUS can add and revise both full-function and Fast Path resource definitions. Changes to DEDB databases take effect immediately; thus, you can resize a DEDB without stopping IMS.