Can't connect gamemode with mysql database

Hi ! Guys , i have two problems :( . I downloaded "redzmaxro" gamemode , but when i try to connect with database i got this :
1) redzmaxro.amx]: Run time error 19: "File or function is not found"

2)
Loading plugin: mysql.so
Failed (libmysqlclient_r.so.16: cannot open shared object file: No such file or directory)
Loaded 2 plugins.

I checked server.cfg , all it's good there . I downloaded libmysqlclient_r.so.16 but no effect . Help plss

P.S: I'm romanian , sorry for bad english :D >.<