Zabbix Database Problem

[nimamobahi12]

Hello everyone ,
i have problem with zabbix database , i want to clear old log in zabbix , but i dont know how !
and i dont know where is the location of log file
please help

[tomeksup]

in terminal type mysql;
the truncate history_uint; and wait
all data history will be rase.
Befere that make backup of all zabbix.

[nimamobahi12]

thanks
but i want to clear data only for 2 last year , and keep data for last year