DB2 - Problembeschreibung
| Problem IC67187 | Status: Geschlossen |
COMPRESSION STATISTIC PCTPAGESSAVED MAY BE INACCURATE. | |
| Produkt: | |
DB2 FOR LUW / DB2FORLUW / 980 - DB2 | |
| Problembeschreibung: | |
PCTPAGESSAVED is set to 0 when RUNSTATS is executed on just the
indexes of the table via the FOR INDEXES clause, for example:
RUNSTATS ON TABLE s.t FOR INDEXES ALL
Under rare situations, incorrect intermediate calculations can
lead to an inaccurate PCTPAGESSAVED value, including 0 and
negative values. | |
| Problem-Zusammenfassung: | |
**************************************************************** * USERS AFFECTED: * * ALL * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to DB2 9.8 FP3 or Subsequent Fix Pack * **************************************************************** | |
| Local-Fix: | |
Determine compression benefit from other compression statistics
PCTROWSCOMPRESSED and AVGROWCOMPRESSIONRATIO.
If PCTPAGESSAVED is 0 after an index-only RUNSTATS operation,
collect statistics again, ensuring to collect statistics for the
table as well as its indexes, for example:
RUNSTATS ON TABLE s.t AND INDEXES ALL | |
| verfügbare FixPacks: | |
DB2 Version 9.8 Fix Pack 3 for Linux, UNIX, and Windows | |
| Lösung | |
Problem First Fixed in DB2 Version 9.8 Fix Pack 3 | |
| Workaround | |
keiner bekannt / siehe Local-Fix | |
| Weitere Daten | |
Datum - Problem gemeldet : Datum - Problem geschlossen : Datum - der letzten Änderung: | 12.03.2010 10.12.2012 10.12.2012 |
| Problem behoben ab folgender Versionen (IBM BugInfos) | |
9.8.FP3 | |
| Problem behoben lt. FixList in der Version | |
| 9.8.0.3 |
|