Informix - Problembeschreibung
Problem IT28628 | Status: Geschlossen |
FAILED CONNECTIONS COULD LEAD TO INCORRECT VALUE FOR SHMEM->SH_RSNACTIVE WHICH COULD CAUSE PHYSICAL LOG OVERFLOW ASSERTIONS | |
Produkt: | |
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10 | |
Problembeschreibung: | |
Under specific failed connections, it's possible that shmem->sh_rsnactive will be decremented prior to it having been incremented. If this happens often enough shmem->sh_rsnactive can go to a negative value. This can lead to physical log overflow because this value is used in the code to determine if a non-blocking checkpoint needs to be switched to a blocking checkpoint, to prevent the physical log from filling. The most likely cause of failed connections would be servers that have SHMTOTAL set to a non-zero value, and the server has allocated SHMTOTAL amount of memory. Fixed in 12.10.UC11 | |
Problem-Zusammenfassung: | |
**************************************************************** * USERS AFFECTED: * * All operating systems. * **************************************************************** * PROBLEM DESCRIPTION: * * Under specific failed connections, it's possible that * * shmem->sh_rsnactive will be decremented prior to it having * * been * * incremented. If this happens often enough * * shmem->sh_rsnactive can go to a negative value. This can * * lead * * to physical log overflow because this value is used in the * * code * * to determine if a non-blocking checkpoint needs to be * * switched * * to a blocking checkpoint, to prevent the physical log from * * filling. * * * * The most likely cause of failed connections would be servers * * that have SHMTOTAL set to a non-zero value, and the server * * has * * allocated SHMTOTAL amount of memory. * **************************************************************** * RECOMMENDATION: * * Upgrade to version 12.10.XC11 * **************************************************************** | |
Local-Fix: | |
Lösung | |
Workaround | |
keiner bekannt / siehe Local-Fix | |
Weitere Daten | |
Datum - Problem gemeldet : Datum - Problem geschlossen : Datum - der letzten Änderung: | 01.04.2019 08.10.2019 08.10.2019 |
Problem behoben ab folgender Versionen (IBM BugInfos) | |
12.10.xC11 | |
Problem behoben lt. FixList in der Version |