I installed Zabbix 2.2.5 from source file of zabbix-2.2.5.tar.gz, my complile options are:
./configure --enable-server --enable-agent --enable-java --enable-ipv6 --with-mysql --with-jabber --with-libxml2 --with-unixodbc --with-net-snmp --with-ssh2 --with-openipmi --with-ldap --with-libcurl --with-iconv --with-iconv-include --with-iconv-lib

After installment, I tried to create an "Database monitor" item on the monitored host, but when zabbix server checked this DB item, it crashed in 10 ~ 15 seconds. I've checked the log file of zabbix_server, and found that error occured when odbc_DBfetch() was executed, then a lot of error message were shown :
Got signal [signal:11(SIGSEGV),reason:1,refaddr:(nil)]. Crashing ...

The attachment files are described as following:
Install Zabbix 2.2.5 From Sources.html: a step by step installation procedure used by myself
zabbix_server.log: an error log of zabbix_server
zabbix_server_dump.7z: the objdump file of zabbix_server