Fixes are available
APAR status
Closed as program error.
Error description
A query being compiled that has a local predicate (LOCPRD) with an empty string literal, i.e., '', may cause the instance to abend if the following conditions are satisfied: 1) The column (COMPCOL) in LOCPRD is equivalent to another column (OTHCOL), e.g., via a join 2) OTHCOL is also involved in a local predicate (OTHLOCPRD) 3) LOCPRD is either an equi-join or non-equi-join predicate 4) OTHLOCPRD is an equi-join predicate 5) OTHCOL and COMPCOL are both string-type columns The stack trace from such an abend will look something like: sqlrxcp1 sqlnr_seldel_test sqlnr_upddelpd_cond sqlnr_seq sqlnr_rcc sqlnr_magic_detail_action ...
Local fix
Manually rewrite the query by adjusting the empty strings in the2 predicates involved to have the same length as the columns they are being compared against using spaces, e.g., VARCHAR_4_COL = '' can be safely adjusted to: VARCHAR_4_COL = ' '
Problem summary
A query being compiled that has a local predicate (LOCPRD) with an empty string literal, i.e., '', may cause the instance to abend if the following conditions are satisfied: 1) The column (COMPCOL) in LOCPRD is equivalent to another column (OTHCOL), e.g., via a join 2) OTHCOL is also involved in a local predicate (OTHLOCPRD) 3) LOCPRD is either an equi-join or non-equi-join predicate 4) OTHLOCPRD is an equi-join predicate 5) OTHCOL and COMPCOL are both string-type columns The stack trace from such an abend will look something like: sqlrxcp1 sqlnr_seldel_test sqlnr_upddelpd_cond sqlnr_seq sqlnr_rcc sqlnr_magic_detail_action ...
Problem conclusion
First fixed in DB2 UDB Version 9.1 FixPak 9.
Temporary fix
Manually rewrite the query by adjusting the empty strings in the2 predicates involved to have the same length as the columns they are being compared against using spaces, e.g., VARCHAR_4_COL = '' can be safely adjusted to: VARCHAR_4_COL = ' '
Comments
APAR Information
APAR number
IZ59120
Reported component name
DB2 UDB ESE SOL
Reported component ID
5765F4102
Reported release
910
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2009-08-20
Closed date
2010-04-13
Last modified date
2010-04-13
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
DB2 UDB ESE SOL
Fixed component ID
5765F4102
Applicable component levels
R910 PSY
UP
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Document Information
Modified date:
03 October 2021