Space for the INDXEXTR and INDXWORK files is primarily used for integrated index orphan records and, secondarily, for integrated index errors.
If your database contains a small number of member records in integrated index sets, then you can estimate the total blocks using this formula:
Total Number of Blocks=((total # integrated index member records)*record size)*0.5
block size
Record Size = 76 + length of member symbolic key +
length of owner symbolic key +
4 bytes for the record descriptor word (RDW)
If your database contains a large number of member records in integrated index sets, multiply the result by 3. In a typical situation, a DASD cylinder allocation of 20,4 should be adequate.
Both INDXEXTR and INDXWORK should use the same space allocation.
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