|
Problem IC73588
|
Status: Closed |
INSTANCE MAY ABEND DURING REVALIDATION OF VIEW THAT HAS AN UN-TYPED NULL AS AN OUTPUT COLUMN |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
Revalidation of a VIEW that contains an un-typed NULL as an
output column may abend the instance.
Stack trace from such an abend may look something like:
<various>
sqlrlInsertColumn
sqlrlrsc
sqlrlcrv_sw
sqlnq_view_mod_catalogs
sqlnq_ddl_create_view_end
sqlnn_regen_view
sqlrl_regen_view
sqlrl_regen_view
sqlnq_check_referenced_qtb
sqlnq_check_referenced_qtb
sqlnq_handle_from_table_ref
sqlnq_handle_from_table_ref
sqlnq_sem
sqlnp_parser
sqlnp_parser
sqlnp_main
sqlnn_cmpl
... |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* Revalidation of a VIEW that contains an un-typed NULL as an *
* output column may abend the instance. *
* *
* Stack trace from such an abend may look something like: *
* <various> *
* sqlrlInsertColumn *
* sqlrlrsc *
* sqlrlcrv_sw *
* sqlnq_view_mod_catalogs *
* sqlnq_ddl_create_view_end *
* sqlnn_regen_view *
* sqlrl_regen_view *
* sqlrl_regen_view *
* sqlnq_check_referenced_qtb *
* sqlnq_check_referenced_qtb *
* sqlnq_handle_from_table_ref *
* sqlnq_handle_from_table_ref *
* sqlnq_sem *
* sqlnp_parser *
* sqlnp_parser *
* sqlnp_main *
* sqlnn_cmpl *
* ... *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 Version 9.7 Fix Pack 4. *
**************************************************************** |
| Local Fix: |
- Affected view(s) may be recreated explicitly, i.e.,
CREATE OR REPLACE VIEW ...
- To avoid the issue for future revalidations, explicitly cast
all the NULL column definitions, i.e.,
CREATE OR REPLACE VIEW ... CAST(null AS VARCHAR(1)) AS col_1,
CAST(null AS VARCHAR(1)) AS col_2...
Both workarounds will behave exactly semantically identically as
the original view. |
| available fix packs: |
DB2 Version 9.7 Fix Pack 4 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows
|
| Solution |
First fixed in DB2 Version 9.7 Fix Pack 4. |
| Workaround |
- Affected view(s) may be recreated explicitly, i.e.,
CREATE OR REPLACE VIEW ...
- To avoid the issue for future revalidations, explicitly cast
all the NULL column definitions, i.e.,
CREATE OR REPLACE VIEW ... CAST(null AS VARCHAR(1)) AS col_1,
CAST(null AS VARCHAR(1)) AS col_2...
Both workarounds will behave exactly semantically identically as
the original view. |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 29.12.2010
05.05.2011
05.05.2011 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP4
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.4
|
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