Archive History Data writes model history data to a sequential file and then deletes the data from the database, thus freeing up space. Archiving history data does not affect tool-created data.
Archiving can be done by age, by model, or both. Histories for deleted or renamed models are kept under the original model name and can be archived the same way as history for active models.
Note: History data is stored in the DHLOG table, a CA Gen table created at installation. When archived, it is written to a sequential file and cleared from DHLOG.
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