Asterisk can;t connect o read basedata

i try to use asterisk realtime. i can conect tu the database whit “isql -v asterisk”. and when i run asterisk and executed the command odbc this is the result:
luis-Inspiron-1545*CLI> odbc show

ODBC DSN Settings

Name: asterisk
DSN: asterisk
Last connection attempt: 2013-03-19 15:19:39

but when i executed a reaload or when i trying call this’s result:
[Mar 19 15:23:33] NOTICE[2501]: res_fax.c:3537 set_config: Configuration file ‘res_fax.conf’ not found, not changing options.
– Reloading module ‘’ (ODBC resource)
== Parsing ‘/etc/asterisk/res_odbc.conf’: == Found
[Mar 19 15:23:33] NOTICE[2501]: res_odbc.c:1527 odbc_obj_connect: Connecting asterisk
[Mar 19 15:23:33] WARNING[2501]: res_odbc.c:1552 odbc_obj_connect: res_odbc: Error SQLConnect=-1 errno=0 [unixODBC][Driver Manager]Data source name not found, and no default driver specified

i need, asterisk load the peers of database called sqlite3.db
i have this configuration
some help please.