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Add SORTNPSI_USED To SYSIBM.SYSINDEXSPACESTATS

Use case/business impact.

All indexes reorged on Sunday.

Run daily process to identify any index needing reorged by interrogating RTS.

Since NPSI organization can rapidly deteriorate, on Monday, Tuesday, Wednesday, Thursday, and Friday, it is desired to ignore any NPSIs reorged on the previous Sunday.

When REORGLASTTIME is used to ignore NPSIs reorged on the previous Sunday, NPSIs that got reorged as the result of a partial TS reorg with SORTNPSI NO and are disorganized after the reorg, erroneously get ignored for needing a reorg.

What is needed is an easy method to distinguish between a NPSI reorg (traditional NPSI reorg or partial TS reorg with SORTNPSI YES) and a NPSI reorg done via a partial TS reorg with SORTNPSI NO.

  • Avatar32.5fb70cce7410889e661286fd7f1897de Guest
  • Sep 15 2020
  • Submitted
Why is it useful?
Who would benefit from this IDEA? DBAs would benefit because it would be easy to identify NPSIs that were not sorted during the last partial TS reorg.
How should it work?

Please add a column to SYSIBM.SYSINDEXSPACESTATS:

Column name SORTNPSI_USED CHAR(1).

Indicates if SORTNPSI was used during a Partial TS Reorg.

Values:

Null not applicable

Y NPSI Sorted Because Of SORTNPSI YES

A NPSI Sorted Because Of SORTNPSI AUTO

N NPSI Not Sorted

When SYSIBM.SYSINDEXSPACESTATS REORGLASTTIME is populated,

populate SORTNPSI as follows:

Index

Type Event SORTNPSI_USED

----- ----------------------------------- ----------------------

Any Reorg Index Null

Any Full TS Reorg Null

PI Partial TS Reorg Null

NPSI Partial TS Reorg Y

NPSI Sorted because

of SORTNPSI YES

NPSI Partial TS Reorg A

NPSI Sorted because

of SORTNPSI AUTO

NPSI Partial TS Reorg N

NPSI Not Sorted

Idea Priority Medium
Priority Justification I have been pursuing a solution for this challege for over two years.
Customer Name Stephen Dilts
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