The OVM’s set/get_config_* has been implemented as a wrapper using the uvm_config_db as follows
set_config_int(...) => uvm_config_db#(uvm_bitstream_t)::set(this,...)
set_config_string(...) => uvm_config_db#(string)::set(this,...)
set_config_object(...) => uvm_config_db#(uvm_object)::set(this,...)
set/get_config_* has be deprecated in UVM 1.2.
A warning that you should be aware set_config_int does not map to uvm_config_db#(int)::set(). We recommend against setting/getting individual int’s or strings anyways.
Instead of using uvm_config_db#(uvm_object), you should use the actual type of your configuration object.