ociexecute() [<a href='function.ociexecute'>function.ociexecute</a>]: ORA-02292: integrity constraint (ZABBIX_TEST.ALERTS_FK3) violated - child record found[/var/www/zabbix/include/db.inc.php:507]
SQL error [ORA-02292: integrity constraint (ZABBIX_TEST.ALERTS_FK3) violated - child record found] in [DELETE FROM events WHERE (objectid IN (20785)) AND object=0]
ociexecute() [<a href='function.ociexecute'>function.ociexecute</a>]: ORA-02292: integrity constraint (ZABBIX_TEST.ESCALATIONS_FK2) violated - child record found[/var/www/zabbix/include/db.inc.php:507]
SQL error [ORA-02292: integrity constraint (ZABBIX_TEST.ESCALATIONS_FK2) violated - child record found] in [DELETE FROM triggers WHERE (triggerid IN (20785)) ]

where

CONSTRAINT alerts_fk3 FOREIGN KEY (eventid) REFERENCES zabbix_test.events (eventid);
CONSTRAINT escalations_fk2 FOREIGN KEY (triggerid) REFERENCES zabbix_test.triggers (triggerid)

need

+ DELETE FROM alerts WHERE eventid IN (SELECT eventid FROM events WHERE (objectid IN (20785)) AND object=0);
+ DELETE FROM escalations WHERE eventid IN (SELECT eventid FROM events WHERE (objectid IN (20785)) AND object=0);
DELETE FROM events WHERE (objectid IN (20785)) AND object=0;
DELETE FROM triggers WHERE (triggerid IN (20785));