IBM Data and AI Ideas Portal for Customers


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Status Not under consideration
Workspace Db2
Components Utilities (Export Import Load db2look etc)
Created by Guest
Created on Oct 6, 2014

RELATED IDEAS

Perform rebuild of each index (for a table) in its own transaction

In the current design, all the index rebuilds for a table are performed within the same transaction (as the action that triggered them). If the transaction is interrupted (e.g. user interrupt or dropped session), then the entire transaction is rolled back; upon the next access, all the indexes have to be rebuilt again, even for indexes that were rebuilt previously. This can be a significant problem for large tables and/or tables with many indexes, for which the index rebuild transaction may take hours.
  • Guest
    Reply
    |     Nov 9, 2019

    The major benefit of this would be to reduce active log space consumption. The impatient administrator that terminates index creation in the middle is not my concern. The other feature request is addressing this.

  • Guest
    Reply
    |     Nov 8, 2019

    Would this feature still be required if index rebuilds were done asynchronously, such that an interrupted connection/session would not terminate the index rebuild process?
    (See RFEs DB24LUW-I-338 (index rebuild at first access) and DB24LUW-I-427 (index rebuild at restart)).

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