In history.php page, when you select a few items log file monitoring, there is a mistake:

ociexecute() [<a href='function.ociexecute'>function.ociexecute</a>]: ORA-00904: "ARRAY": invalid identifier[/var/www/zabbix/include/db.inc.php:476]
SQL error [ORA-00904: "ARRAY": invalid identifier] in [SELECT MIN(t.clock) as clock FROM trends t WHERE t.itemid=Array]
ocierror() expects parameter 1 to be resource, boolean given[/var/www/zabbix/include/db.inc.php:403]
SQL error [] in []
ocifetchinto() expects parameter 1 to be resource, boolean given[/var/www/zabbix/include/db.inc.php:525]
ociexecute() [<a href='function.ociexecute'>function.ociexecute</a>]: ORA-00904: "ARRAY": invalid identifier[/var/www/zabbix/include/db.inc.php:476]
SQL error [ORA-00904: "ARRAY": invalid identifier] in [SELECT MIN(t.clock) as clock FROM trends_uint t WHERE t.itemid=Array]
ocierror() expects parameter 1 to be resource, boolean given[/var/www/zabbix/include/db.inc.php:403]
SQL error [] in []

Zabbix 1.6.1 rev 6487