DB2 - Problembeschreibung
Problem IC83438 | Status: Geschlossen |
Log Replay of Update LOB Field Concatenation Can Cause Corruption | |
Produkt: | |
DB2 FOR LUW / DB2FORLUW / 980 - DB2 | |
Problembeschreibung: | |
If a LOB field has been appended with an update command (e.g. using the || operator or the CONCAT scalar operator), it may become corrupted if either of the following scenarios occur: 1. If a LOB is appended after a backup is taken, restoring from the backup and rolling forward such that the concatenation is replayed can corrupt the LOB. 2. In HADR scenarios, a LOB concatenation operation on the primary can be incorrectly replayed on the secondary, corrupting the LOB. In both cases, the target LOB to be updated must contain the original version of itself as one of the concatenation arguments. The concatenation of other values written to the target LOB will not result in corruption. If corruption did occur, the LOB will appear to be truncated. Although the length as indicated by LENGTH(column) will report the non-corrupted size of the concatenated LOB, the actual LOB will appear to be shorter than what it should be. | |
Problem-Zusammenfassung: | |
**************************************************************** * USERS AFFECTED: * * ALL * **************************************************************** * PROBLEM DESCRIPTION: * * Without this APAR, customer is exposed to the issue as * * described in the "ERROR DESCRIPTION" section. * **************************************************************** * RECOMMENDATION: * * Upgrade to DB2 Version 9.8, Fixpack 5. * **************************************************************** | |
Local-Fix: | |
N/A | |
Lösung | |
First fixed in DB2 Version 9.8, Fixpack 5. | |
Workaround | |
keiner bekannt / siehe Local-Fix | |
Weitere Daten | |
Datum - Problem gemeldet : Datum - Problem geschlossen : Datum - der letzten Änderung: | 14.05.2012 18.07.2012 18.07.2012 |
Problem behoben ab folgender Versionen (IBM BugInfos) | |
9.8.FP5 | |
Problem behoben lt. FixList in der Version | |
9.8.0.5 |