[ZBX-19351] fixed event correlation query failure on Oracle (ssimonenko)

CHERTS · Dec 18, 2021 · 6b21cb1 · 6b21cb1
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diff --git a/ChangeLog b/ChangeLog
@@ -7,6 +7,7 @@ New features:
 
 Bug fixes:
 ..F....... [ZBX-18611] fixed division by zero error due to small graph size when using gradient lines (Ivo)
+........S. [ZBX-19351] fixed event correlation query failure on Oracle (ssimonenko)
 ........S. [ZBX-19651] fixed problem escalation when at least one of the hosts in a trigger expression is not in maintenance (dgoloscapov)
 ........S. [ZBX-19872] removed redundant escaping in XML data of HTTP agent POST request (asestakovs)
 ...G...PS. [ZBX-20236] improved memory consumption in Zabbix proxy trappers by moving configuration sync between database and cache to configuration syncer; improved trappers and listeners memory consumption by freeing received data after it was processed instead of after new data is received (vso)

diff --git a/PATCHLIST.md b/PATCHLIST.md
@@ -172,6 +172,7 @@
 [ZBX-19334] removed redundant ListenIP parameter in server's configuration file (https://support.zabbix.com/browse/ZBX-19334)
 [ZBX-19340] optimized history cache to reduce storage of metadata-only records (https://support.zabbix.com/browse/ZBX-19340)
 [ZBX-19342] fixed web scenario items not being cloned for graph prototypes (https://support.zabbix.com/browse/ZBX-19342)
+[ZBX-19351] fixed event correlation query failure on Oracle (https://support.zabbix.com/browse/ZBX-19351)
 [ZBX-19358] fixed memory leak in case of duplicate vmware hv uuid (https://support.zabbix.com/browse/ZBX-19358)
 [ZBX-19359] fixed error in logsource function due to empty source (https://support.zabbix.com/browse/ZBX-19359)
 [ZBX-19373] fixed security vulnerability for links having target="_blank" (https://support.zabbix.com/browse/ZBX-19373)

diff --git a/src/zabbix_server/events.c b/src/zabbix_server/events.c
@@ -944,7 +944,7 @@ static char	*correlation_condition_get_event_filter(zbx_corr_condition_t *condit
 			if (0 == values.values_num)
 			{
 				/* no new tag found, substitute condition with failure expression */
-				filter = zbx_strdup(NULL, "0");
+				filter = zbx_strdup(NULL, "1=0");
 			}
 			else
 			{