A fix is available
APAR status
Closed as program error.
Error description
During a REORG with honor_keepdictionary YES it doesn't decompress but it allocates the same amount of tracks as honor_keepdictionary NO causing more DASD allocation than necessary
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All DB2 10 for z/OS and DB2 11 for z/OS * * users of REORG TABLESPACE utility. * **************************************************************** * PROBLEM DESCRIPTION: Average row length was overestimated * * during a REORG KEEPDICTIONARY on a * * table space to convert the row format * * with ROWFORMAT BRF/RRF when the ZPARM * * HONOR_KEEPDICTIONARY was set to YES. * **************************************************************** * RECOMMENDATION: Apply corrective PTF when available. * **************************************************************** A REORG KEEPDICTIONARY with ROWFORMAT BRF/RRF option was run on a table space with a table with all fixed length columns to convert the row format. The ZPARM HONOR_KEEPDICTIONARY was set to YES. The REORG estimated the average row length using the decompressed data, however the compressed record was unloaded and sorted for this case, so the estimate for the sort work data set was overestimated. A REORG KEEPDICTIONARY with ROWFORMAT BRF/RRF option was run on a table space with a table with varying length columns to convert the row format. The ZPARM HONOR_KEEPDICTIONARY was set to YES. The REORG incorrectly unloaded some records decompressed.
Problem conclusion
REORG code has been modified to estimate the average row length on the compressed data if KEEPDICTIONARY and ROWFORMAT BRF/RRF options are specified when the ZPARM HONOR_KEEPDICTIONARY is set to YES. REORG code has been modified to unload the compressed record for the table space with a table with varying length columns for this case.
Temporary fix
Comments
APAR Information
APAR number
PI52899
Reported component name
DB2 OS/390 & Z/
Reported component ID
5740XYR00
Reported release
A10
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2015-11-20
Closed date
2016-02-29
Last modified date
2016-04-05
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI35765 UI35766
Modules/Macros
DSNUCRUL DSNUKIUL DSNURFBR DSNURFIT DSNURFUI DSNURSCN DSNUSTBL DSNUULXA
Fix information
Fixed component name
DB2 OS/390 & Z/
Fixed component ID
5740XYR00
Applicable component levels
Fix is available
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Document Information
Modified date:
05 April 2016