Healing EPS pointers in a HALDB

HALDBs use Indirect List Datasets (ILDSs) when logical relationships or secondary indexes exist in the database design.

The pointers between relationships can change as a partition is reorganized. The ILDS is used to locate the relocated data after reorganization. These pointers are corrected by IMS as the data is accessed with an updated PSB and are then considered healed.

BMC AMI Reorg provides a method (using the Copy function) for mass healing of the pointers that are stored in the ILDS. Each index or relationship can be healed individually or in mass while updates are allowed (under BMC AMI Online Reorg for IMS) or in exclusive mode (using MAXM Reorg/EP for IMS). Either approach uses the AOI function to control online access during the copy.

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Related topic

Copy-function



 

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