Failed to ude Berkley db in C++

I need to work with many data bases in my application. I open environment "dataBaseEnvironment.open(getDataBaseEnvironmentFilePathNameCharString(), DB_CREATE | DB_INIT_LOCK | DB_INIT_MPOOL | DB_INIT_TXN, 0)" and cannot create 2 databases. At second data base creation system hang up. I tried to set cash to 1 Gb, but without success. Could anybaody post working sample of work with couple of databases in the same project?