A fix is available
APAR status
Closed as program error.
Error description
In the absence of index statistics DB2 can calculate number of rows using table and table space pages. If for some reason the catalog has a very large number of table pages and a small number of table space pages the row calculation can result in an ABENDS0C9 in DSNUCINM +3180 UK94071. Logically, you should never have a much larger number of table pages than table space pages.
Local fix
Run RUNSTATS
Problem summary
**************************************************************** * USERS AFFECTED: All DB2 10 for z/OS and DB2 11 for z/OS * * utility users of REBUILD INDEX * **************************************************************** * PROBLEM DESCRIPTION: REBUILD INDEX abends with ABENDS0C9 RC9 * * at DSNUCINM +x'30E6' * **************************************************************** * RECOMMENDATION: Apply corrective PTF when available * **************************************************************** After having its indexes dropped, a table was loaded with over 5 million pages of data rows with LOAD REPLACE and without any statistics being gathered. Without STATISTICS on the LOAD, the number of pages for that table space is not updated so it maintained the small number of pages it had from before the LOAD. When REBUILD INDEX was run, DB2 attempted to calculate the number of rows in the table for its index(es). However, the number of data pages in the table was very high but the number of table space pages was low from a previous catalog update so the algorithm, which used 31-bit variables, could not handle the arithmetic calculations and the ABEND0C9 occurred. It should be noted that if LOAD REPLACE is not run with the STATISTICS keyword, RUNSTATS should be run before the rebuilding of any indexes.
Problem conclusion
Code has been changed to use larger variables in the calculation of rows per table to help avoid the aforementioned error.
Temporary fix
Comments
APAR Information
APAR number
PI22118
Reported component name
DB2 OS/390 & Z/
Reported component ID
5740XYR00
Reported release
A10
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2014-07-16
Closed date
2014-11-21
Last modified date
2015-01-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI23292 UI23293
Modules/Macros
DSNUCINM
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:
02 January 2015