Important We are integrating BMC AMI LOBMaster technology into the BMC AMI Reorg product and discontinuing BMC AMI LOBMaster as a separate product. For the latest integrated documentation, see BMC AMI Reorg for Db2 13.1.

Allocation strategies

An allocation strategy is the implementation of your requirements for data set allocation. An allocation strategy includes:

  • Data set placement
  • Allocation values (primary quantity and secondary quantity)
  • Data set reuse
  • Updating the Db2 Catalog values

Related topics

Overview-of-BMC-AMI-Utilities-concepts

ALLO 

VOLUMES

An allocation strategy also:

  • Determines how a product should allocate, and use the table spaces and indexes that are being processed
  • Includes where and how big the data sets should be defined, and whether the existing data set should be written over, or deleted and redefined

Important

Regardless of whether a data set is user-managed or Db2-managed (STOGROUP defined), BMC AMI Utilities delete and redefine the VSAM data set. Therefore, it is vital to review this information.

You can make the BMC AMI Utilities define data sets in the same way Db2 does, but that is not always the best way. The BMC AMI Utilities offer allocation features that enhance the process. For example, you can reclaim unused space in a table space as a normal part of a reorganization. A PQTY value that does not fit on a volume and would cause a Db2 utility to fail can be dynamically reduced to fit.

Important

This topic uses the terms priqty and secqty to refer to the VSAM allocation values for the data set. When referring specifically to the Db2 catalog values for these terms, PQTY and SQTY are used since these are the Db2 Catalog column names.

You can manage allocation at one of the following levels:


 

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