When i start the zabbix server is OK, but in the logfile /tmp/zabbix_server.log occurs error as following:
11761:20161021:170846.057 Starting Zabbix Server. Zabbix 3.2.1 (revision 62890).
11761:20161021:170846.065 ****** Enabled features ******
11761:20161021:170846.065 SNMP monitoring: YES
11761:20161021:170846.065 IPMI monitoring: YES
11761:20161021:170846.065 Web monitoring: YES
11761:20161021:170846.065 VMware monitoring: YES
11761:20161021:170846.065 SMTP authentication: NO
11761:20161021:170846.065 Jabber notifications: NO
11761:20161021:170846.065 Ez Texting notifications: YES
11761:20161021:170846.065 ODBC: YES
11761:20161021:170846.065 SSH2 support: NO
11761:20161021:170846.066 IPv6 support: NO
11761:20161021:170846.066 TLS support: NO
11761:20161021:170846.066 ******************************
11761:20161021:170846.066 using configuration file: /usr/local/zabbix_server/etc/zabbix_server.conf
11761:20161021:170846.076 [Z3001] connection to database '//172.16.11.150:1521/lytestdb' failed: [-1]
11761:20161021:170846.076 Cannot connect to the database. Exiting...

But I can connect database successful in command :
[root@localhost htdocs]# sqlplus zabbix/[email protected]:1521/lytestdb

SQL*Plus: Release 10.2.0.5.0 - Production on Fri Oct 21 17:22:39 2016

Copyright (c) 1982, 2010, Oracle. All Rights Reserved.

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL>
SQL> show user
USER is "ZABBIX"
SQL> exit

And i write a php test script testconndb.php:
<?php
$conn = oci_connect('zabbix', 'zabbix123', '//xxxx.xxx.xxx.xxx:1521/testdb');
if (!$conn)

else

?>

then open the web URL and it return success:

Connect to oracle successful !

can anyone help ?
Regards,
vindy.fang