|
Problem IC78215
|
Status: Closed |
ALTER FOR BIT DATA COLUMN DATA TYPE TO CHAR OR VARCHAR CHANGES COLUMN CODEPAGE |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
Altering a FOR BIT DATA column data type to CHAR or VARCHAR
unexpectedly changes the column codepage from 0 to the database
codepage. For example:
CREATE TABLE T ( C CHAR(5) FOR BIT DATA )
SELECT CODEPAGE FROM SYSCAT.COLUMNS WHERE COLNAME='C' AND
TABNAME='T'
CODEPAGE
--------
0
1 record(s) selected.
ALTER TABLE T ALTER COLUMN C SET DATA TYPE CHAR(8)
SELECT CODEPAGE FROM SYSCAT.COLUMNS WHERE COLNAME='C' AND
TABNAME='T'
CODEPAGE
--------
1208
1 record(s) selected.
The expected behaviour is that the FOR BIT DATA attribute is
maintained and the codepage remains 0.
It is not possible to alter a FOR BIT DATA column to CHAR or
VARCHAR without FOR BIT DATA. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* Altering a FOR BIT DATA column data type to CHAR or VARCHAR *
* *
* unexpectedly changes the column codepage from 0 to the *
* database *
* codepage. For example: *
* *
* *
* *
* CREATE TABLE T ( C CHAR(5) FOR BIT DATA ) *
* *
* *
* *
* SELECT CODEPAGE FROM SYSCAT.COLUMNS WHERE COLNAME='C' AND *
* *
* TABNAME='T' *
* *
* *
* *
* CODEPAGE *
* *
* -------- *
* *
* 0 *
* *
* *
* *
* 1 record(s) selected. *
* *
* *
* *
* ALTER TABLE T ALTER COLUMN C SET DATA TYPE CHAR(8) *
* *
* *
* *
* SELECT CODEPAGE FROM SYSCAT.COLUMNS WHERE COLNAME='C' AND *
* *
* TABNAME='T' *
* *
* *
* *
* CODEPAGE *
* *
* -------- *
* *
* 1208 *
* *
* *
* *
* 1 record(s) selected. *
* *
* *
* *
* The expected behaviour is that the FOR BIT DATA attribute is *
* *
* maintained and the codepage remains 0. *
* *
* It is not possible to alter a FOR BIT DATA column to CHAR or *
* *
* VARCHAR without FOR BIT DATA. *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 Version 9.7 Fix Pack 5 *
**************************************************************** |
| Local Fix: |
When altering a FOR BIT DATA column data type, ensure the FOR
BIT DATA clause is specified, e.g.: ALTER TABLE T ALTER COLUMN C
SET DATA TYPE CHAR(8) FOR BIT DATA. |
| available fix packs: |
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 |
Problem first fixed in DB2 Version 9.7 Fix Pack 5 |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 18.08.2011
08.11.2011
08.11.2011 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP5
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.5
|
 |
